Electrical Interfacing Device, Conductor Connection Terminal, Electric Back Box, System Comprising the Same, and Method of Use Thereof

Abstract

A system 10 for electrically connecting a faceplate 12 to an electrical circuit within a wall. The system 10 comprises an electric back box 14 having a backplate (figure 2, 20b) and a plurality of bac

Description

The present invention relates to a system for installing a faceplate and electrically connecting the faceplate to an electric circuit within a building. The present invention also relates to an electrical interfacing device, a conductor connection terminal, and an electric back box suitable for use as part of the system. The invention further relates to a method of use of the system. When installing an electrical system in a building, the terms “first fix”, “second fix” and “third fix” are generally used in the housebuilding and construction industry to describe the stages of work required to provide a finished building equipped with functional and safe electrical circuits. In particular, the “first fix” is used to refer to rough work occurring prior to applying plaster to internal walls, such as inserting electrical back boxes into wall cavities created to accommodate the back boxes, running the live, neutral, and earth, electrical wires into the back boxes, either as singles or grouped together as a cable assembly, including installing earthing and grounding systems. An earth electrical wire is essential in the UK but optional in some jurisdictions, such as some European countries. Between the first fix and the second fix, the cavity defined by the back box needs to be protected to prevent ingress of plaster therein. The “second fix” for an electrical system describes work required after plastering of internal walls in relation to connecting electrical cables in the back box, together, into electrical fixtures, such as socket and fused connection unit of faceplates. The “third fix” of an electrical installation involves a) the inspection for any physical damage to the cables, wires or conductors, ensuring the tightening of connecting screws in accessories, detecting of any breakages of the conductors or wires, which happens when the screws are overtightened, and fastening the wired-up faceplates into position, and b) the testing of the final circuits, to ensure all readings comply with the latest Wiring Regulations. However, connecting the electrical wires with the accessories during the second fix is slow and challenging due to the small size of wires and connectors, as well as limited access to the back of the accessories when these need to be approached over obstacles such as kitchen worktops. Additionally, when screws are overtightened into accessories, the screws have the potential of cutting through the wires, opening the circuit thus making the circuit either inoperative or unsafe. Such a circuit may be particularly hazardous as the issue may not be visible to the user. Connecting a faceplate to a wall circuit requires moving the faceplate away from the wall to be able to access the rear of the faceplate but this may not be possible if the electrical wires extending from the back box are too short or the rear of the accessory cannot be seen at close proximity due to obstacles such as kitchen worktops. On the other hand, if the electrical wires are too long and are tightly packed within the back box, overheating may occur. The present invention seeks to provide a solution to these problems. According to a first aspect of the invention, there is provided a system for electrically connecting a faceplate to an electrical circuit within a wall, the system comprising: an electric back box having a backplate and a plurality of back box peripheral walls connected to the backplate and defining a back box cavity and an earthing lug formed of a conductive material; a plurality of conductor connection terminals, each conductor connection terminal comprising an insulating material housing and a conductive protrusion, wherein the conductive protrusion extends from the insulating material housing; and an electrical interfacing device positioned or positionable within the back box cavity, the electrical interfacing device having an interface support body and a plurality of conductive projections extending from the interface support body, the conductive projections for electrically connecting to the faceplate, and the conductive projections being further electrically connected or connectable to the conductive protrusions by abutment thereagainst; wherein the earthing lug has a cantilevered terminal-engagement portion terminating at a free end, the free end being configured for insertion into a said conductor connection terminal. The system enables an easy and rapid installation of a faceplate for several reasons. The user can simply push the electrical interfacing device into position. When the system is assembled, the conductive projections touch or are in contact with the conductive protrusions. The system has a number of benefits over the prior art. The terminals allow electrical wires to be connected during the first fix, rather than the second fix, facilitating and speeding up installation of the back box and socket. The terminals enable the correct length of electrical wires to be used, rather than needing an excessive length as in the prior art, as an excessive length increases the risk of overheating. The terminals may further secure electrical wires by clamping, rather than a screw. Clamping may reduce the likelihood of deforming or damaging the electrical wires. The invention further increases the ease and therefore speed of testing. Electrical installations, especially in rental properties, may need to be frequently tested, such as every five years at least. The system beneficially makes testing, such as carrying out continuity, insulation resistance and loop tests, much faster and easier, such as by disconnecting the accessory and plugging in appropriate test leads into installation testers. Preferably, the earthing lug may further include a spacer portion extending from the backplate into the back box cavity, the cantilevered terminal-engagement portion extending from the spacer portion. The earthing lug enables the back box to be easily and quickly earthed by connecting earthing lug to the earth terminal. In comparison, in the prior art, a separate earth electrical connector, such as an earth wire, needs to be inserted into the earth terminal, then threaded through an earth screw electrically connected to the back box, which is time consuming and challenging. The earthing lug may be formed with the back box, such as during manufacture. In other words, the earthing lug may be integrally formed with the back box. However, connected, separably connected or connectable with the back box may be considered. Preferably, the system may further comprise a faceplate. The faceplate may be provided as part of the system. Furthermore, the faceplate may be provided already connected with the electrical interfacing device. The faceplate may even be integrally formed with the electrical interfacing device. In either case, the need to connect the faceplate to the electrical interfacing device at or adjacent the wall cavity is negated, saving the user time. Optionally, the system may further comprise a cover. The cover, which may be plastic, in-use protects the parts inside the back box during the plastering process. The cover provides a barrier. The cover is different to a faceplate. The cover is removed or removable prior to installation of the faceplate. Beneficially, the interface support body may have a wall portion having an outer surface and defining at least in part a cavity, and a first aperture extending through the wall portion from the outer surface to the at least one cavity; wherein a first conductive projection from the plurality of conductive projections extends through the first aperture; and a second conductive projection from the plurality of conductive projections extends through the first aperture or a second said aperture. Optionally, the conductive projections may be spaced apart from each other for electrical insulation. Any electrical connections, such as wires, connecting to the conductive projections are protected within the cavity, such that the risk of disconnection from the conductive projections is reduced. Each conductive projection may extend through a distinct aperture. Alternatively, a single aperture may accommodate a plurality of conductive projections. Such an aperture may be a slit or slot. An interface support body having a single aperture instead of multiple apertures may be simpler to manufacture. Preferably, the electrical interfacing device may further comprise a third conductive projection extending through: the first aperture or the second aperture or a third said aperture. Two conductive projections provides live and neutral electrical connections and a third conductive projection provides an earth electrical connection. An earth connection increases safety. It is noted that the earth electrical connection is essential in the UK but is optional in some European countries, for instance. Beneficially, one or more of: the first conductive projection, the second conductive projection, and the third conductive projection may include a planar wall portion, the planar wall portion defining a plane. All or part of one or more conductive projections may be a flat plate. As the conductive projections are electrically connected by abutment against the conductive protrusions, a flat plate is beneficial as providing a greater contact area. In comparison, a pin having a circular crosssection provides a very small contact area when abutted against a conductive protrusion. Additionally, the planes of at least two planar wall portions may be coplanar with each other. The planar wall portions extend in the same plane. Coplanar wall portions may facilitate manufacture and / or connection with the terminals. Optionally, a planar wall portion may comprise an insulating core and two distinct conductive faces provided on opposite sides of the insulating core, the conductive faces being electrically isolated from each other by the insulating core. When inserted between two mirrored conductive protrusions which otherwise abut, such a planar wall portion may insulate the two conductive protrusions from each other and force any electrical current into the electrical interfacing device. In other words, a first of the two conductive protrusions, the electrical interfacing device and the second of the two conductive protrusions are connected in series, instead of being in parallel. The benefit is that the electrical interfacing device may be used to test the electrical circuit. Preferably, the insulating material housing of at least one of the plurality of conductor connection terminals may have a base wall; a top wall; lateral walls connecting the base wall to the top wall; a first end wall and a second end wall opposite the first end wall, each of the first end wall and the second end wall connecting to all of the base wall, top wall, and lateral walls; the said at least one of the plurality of conductor connection terminals may further comprise: an exit port having an exit aperture provided in the second end wall, at least one entry port having an entry recess provided in the first end wall for receiving an electrical conductive element therein, and a conductive bridging connector for connecting an electrical conductive element received in the or a said entry port to the conductive protrusion, wherein the said conductive protrusion extends through the exit aperture outwardly of the insulating material housing, the conductive protrusion having a contact portion, and terminating at a free end. The housing provides an insulating outer shell, preventing or inhibiting access to any wires connected to each other within the housing. The protrusion that extends outwardly enables an easy connection to another such protrusion. Advantageously, the conductive protrusion of at least one of the plurality of conductor connection terminals may include a plate element. A plate element has a greater contact area when abutted against the conductive protrusions, at least compared to a pin having a circular cross-section. A greater contact area enables a greater amount of electrical current to pass from one conductive protrusion to another and / or more safely. Furthermore, the plate element of the conductive protrusion may have a plurality of plate subsections connected to each other at a non-flat angle. Additionally or alternatively, the plate element of the conductive protrusion may have curvature. Preferably, the contact portion may be spaced apart from the second end wall and / or a plane defined by the second end wall by a first distance, and the free end may be spaced apart from the second end wall and / or the plane defined by the second end wall by a second distance, the second distance being less than the first distance. The conductive protrusions of two mirrored terminals extend towards and enter into contact with each other, before moving away from each other to enable an easier insertion of a conductive projection therebetween. The shape of the conductive protrusions additionally biases the conductive protrusions towards each other if displaced away from each other. Advantageously, a first conductor connection terminal of the plurality of conductor connection terminals may have a first contact portion; a second conductor connection terminal of the plurality of conductor connection terminals may have a second contact portion; wherein at least one of: the first contact portion may be positioned relative to the second contact portion so as to match or substantially match the position of at least one conductive projection; and the first and second conductor connection terminals may be arranged pairwise so that their second end walls face each other, and the conductive contact portions of the first and second conductive connection terminals may be abuttable or abutted against each other. Terminals may be side by side and / or in a mirror configuration relative to each other. Whilst preferably the terminals are aligned with each other such that their contact portions of the conductive protrusions are all or substantially all coplanar, the terminals and / or the contact portions thereof may be non-coplanar, such as staggered. Preferably, the system may further com prise an immobiliser, the at least two conductor connection terminals being at least temporarily immobilised relative to each other by the immobiliser. The immobiliser facilitates installation of the system as the user can simply insert the plurality of terminals in one step, rather than having to insert each terminal individually. The positions of the terminals relative to each other are also fixed so that the user does not need to measure and if required, adjust the position of each terminal to ensure the contact portions are correctly positioned to enable connection with the conductive projections, which is time-consuming. Furthermore, the immobiliser may include an immobiliser plate. The immobiliser plate ensures the terminals are all the same height. The immobiliser plate is also easy to immobilise relative to the back box. Furthermore, the immobiliser plate may provide insulation between the conductive projections and the backplate if formed of an insulating material. Additionally or alternatively, the electrical back box may further comprise a terminal-securing element. Beneficially, the terminal-securing element may include at least one bracket extending from the backplate. Additionally or alternatively, the terminal-securing element may further include a fastener-receiving aperture and a fastener engageable with the fastener-receiving aperture. The terminals and / or the immobiliser may be easily secured in place relative to the back box. Furthermore, the terminal securing element ensures a consistent positioning of the terminals and thus of the conductive protrusions thereof in the back box. This is particularly important if the faceplate and the electrical interfacing device are integrally formed as fixing the faceplate to the back box determines the position of the conductive projections of the electrical interfacing device. The electrical interfacing device, also referred to as a header connector, may be provided in isolation for customisability, such as if the terminals are arranged differently relative to each other. In the event of a structural failure, the electrical interfacing device can be easily replaced, without needing to replace the whole system. The back box may be provided in isolation for ease of replacement and / or customisability. The conduct connection terminal may be provided in isolation for ease of replacement and / or customisability. For example, a terminal with a different number of entry ports may be used to accommodate a greater number of electrical wires. According to a further aspect of the invention, there is provided a method of electrically connecting a faceplate to an electrical circuit within a wall, the method comprising the steps of: a] providing a system in accordance with the first aspect of the invention; b] inserting the conductor connection terminals into the electrical back box and moving at least one of the conductor connection terminals until the earthing lug is received within the or a said conductor connection terminal; c] inserting the back box into a wall cavity before, during or after step b]; d] electrically connecting a live electrical conductive element with a first conductor connection terminal, electrically connecting a neutral electrical conductive element with a second conductor connection terminal, and optionally electrically connecting an earth electrical conductive element with a third conductor connection terminal; and e] moving the electrical interfacing device so that the conductive projections contact corresponding conductive protrusions of the conductor connection terminals. Installing a faceplate is easy and faster due to the provision of the system. The user can simply and rapidly connect the electrical interfacing device to the circuit by pushing the conductive projections into abutment with the conductive protrusions. If not already provided, the terminals may be inserted into the back box. If there is a choice of position within the back box and / or a choice of number and / or type of terminals, the user can choose the position, number and / or type of terminals as required. The user can easily move the terminals to connect to the earthing lug, without the need to wire up an earth terminal separately. Optionally, the method may further comprise a further step of f], electrically connecting the faceplate to the electrical interfacing device . Additionally, the method may comprise a further step of g] closing the back box cavity with the faceplate. The invention will now be more particularly described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 shows a perspective front view of a first embodiment of a system in accordance with the first aspect of the invention, with the electrical interfacing device omitted and the faceplate being spaced apart from the back box for clarity, additionally showing live, neutral and earth electrical wires from three sources being electrically connected together via three pairs of conductor connection terminals; Figure 2 illustrates a front view of the electrical back box of Figure 1; Figure 3 illustrates a cutaway top plan view of the electrical back box of Figure 2, the cutaway being taken along line B-B in Figure 2; Figure 4 illustrates a cutaway top representation of the electrical interfacing device of the system in accordance with the first aspect of the invention; Figure 5 is a part cutaway top plan representation of the electrical interfacing device of Figure 4, with the outlines of two header cavities illustrated in dashed lines; Figure 6 illustrates a close-up front representation of the system of Figure 1, with the electrical interfacing device, the electrical wires and faceplate omitted for clarity; Figure 7 is a top plan cross-sectional representation of part of the system shown in Figure 1, the cross-section being taken along line A-A in Figure 1, with the back box, the electrical interfacing device, faceplate and one of the two electrical wires being omitted for clarity, and a first position and a second position of one of the two movable levers being shown in a solid line and dashed lines respectively, each lever being pivotably movable between the first and second positions as indicated by Arrow C; Figure 8 shows the cutaway top plan representation of the back box of Figure 3 and conductor connection terminals mounted onto an immobiliser plate, in-use, with the conductor connection terminals mounted onto the immobiliser plate being moved as indicated by Arrow D towards a backplate of the back box; Figure 9 illustrates the back box and conductor connection terminals mounted to the immobiliser plate of Figure 8, after the immobiliser plate has been abutted against the backplate of the back box; Figure 10 shows a front view of the back box and conductor connection terminals mounted to the immobiliser plate of Figure 9, in-use, with the conductor connection terminals mounted to the immobiliser plate being shown in an initial position; an outline of the immobiliser plate when in an intermediate position being shown in dashed lines after translation of the immobiliser plate along Arrow E, and an outline of the immobiliser plate when in a final position being shown in dashed dotted lines after translation of the immobiliser plate along Arrow F; Figure 11 illustrates a front view of the back box and the outline of the immobiliser plate in the final position of Figure 10, in-use, with a fastener received through overlapping fastener through-bore and fastener-receiving aperture, the fastener being tightened via rotation as indicated by Arrow G; Figure 12 is a schematic representation of electrical wires connecting the conductive projections of the electrical interfacing device of Figure 7 to two sockets of the faceplate of Figure 1; Figure 13 is a part cutaway top plan view of the system of Figure 1, in-use, in which the back box is received in a cavity in a wall, and in which the electrical interfacing device is being inserted into the back box as indicated by Arrow H after having been electrically connected to a faceplate; Figure 14 is the system of Figure 13, in-use, after engagement of the electrical interfacing device with the conductor connection terminals; Figure 15 shows the system of Figure 14, in-use, after a first plug has been inserted into one of the two sockets of the faceplate and a second plug is being moved into engagement with the second of the two sockets as indicated by Arrow I; Figure 16 illustrates a part cutaway perspective representation of a second embodiment of a system in accordance with the first aspect of the invention, in-use, with the electrical interfacing device and back box peripheral walls omitted for clarity, showing an outline of an immobiliser plate and conductor connection terminals in an initial position illustrated in dashed lines and in a final position illustrated in solid lines after movement of the immobiliser plate as indicated by Arrow J and after securing the immobiliser plate to the backplate via a fastener being rotated as indicated by Arrow K; Figure 17 illustrates a part cutaway perspective representation of a third embodiment of a system in accordance with the first aspect of the invention, in-use, with the electrical interfacing device and back box peripheral walls omitted for clarity, showing an outline of an immobiliser plate and conductor connection terminals in an intermediate position illustrated in solid lines and in a final position illustrated in dashed lines after movement of the immobiliser plate as indicated by Arrow L then Arrow M and after securing the immobiliser plate to the backplate via a fastener being rotated as indicated by Arrow N; Figure 18 is a cross-sectional top plan representation of an electrical interfacing device of a fourth embodiment of a system in accordance with the first aspect of the invention; Figure 19 shows a cutaway top plan representation of an immobiliser plate and a pair of conductor connection terminals of a fifth embodiment of a system in accordance with the first aspect of the invention; and Figure 20 shows a cutaway top plan representation of an immobiliser plate and a pair of conductor connection terminals of a sixth embodiment of a system in accordance with the first aspect of the invention. Referring to Figure 1, there is shown a system indicated generally at 10. The system 10 in-use enables a faceplate 12 to be electrically connected to an electrical circuit. The electrical circuit is preferably within a wall. The system 10 includes a faceplate 12; an electric back box 14, an electrical interfacing device 16 and a conductor connection terminal 18, but any of the above may be omitted and / or a plurality of any of the above may be provided. Any part of the system 10 may be provided separately. The faceplate 12 in-use provides an aesthetic interface to obscure the back box 14 from view when fitted thereto. The faceplate 12 has an electrical interface 12a and a planar or generally planar wall 12b. In the illustrated embodiment, the electrical interface 12a includes at least one socket 12a provided within the planar wall 12b. The or each socket 12a is adapted to receive a plug. However, any addition or alternative to a socket may be envisioned, such as a switch. The electric back box 14 is in-use receivable or received within a cavity within a wall. As most clearly shown in Figure 2, the electric back box 14 includes at least one back box peripheral wall 20a, a backplate 20b, an earthing lug 22 and a terminal-securing element 24, but any of the above may be omitted and / or a plurality of any of the above may be provided. The at least one peripheral wall 20a is connected to the backplate 20b. Together, the at least one peripheral wall 20a and the backplate 20b define a back box cavity. If a faceplate 12 is provided, the faceplate 12 closes or seals the back box cavity. Preferably, there are a plurality of peripheral walls 20a. One or more apertures may be provided in one or more peripheral walls 20a. The one or more apertures provide an access for one or more electrical connectors 26, such as electric wires. The earthing lug 22, also referred to as an earthing bracket, in-use enables the back box 14 to be connected indirectly or directly to an earth electrical connector 26 for safety. The earthing lug 22 is preferably formed of a conductive material, such as metal. Preferably, the earthing lug 22 is formed as part of the back box during manufacture. As most clearly shown in Figure 3, the earthing lug 22 has a spacer portion 22a and a terminal-engagement portion 22b but either may be omitted and / or a plurality of either may be provided. The spacer portion 22a may be referred to as a lug spacer portion 22a for clarity. The lug spacer portion 22a extends from the back box 14, and more preferably, from the backplate 20b into the back box cavity. The terminal-engagement portion 22b is in-use engaged or engageable with the or a said conductor connection terminal 18, directly or indirectly. The terminal-engagement portion 22b is preferably cantilevered. The terminal-engagement portion 22b extends from the spacer portion 22a and terminates at a free end. The lug 22 and / or the terminal-engagement portion 22b thereof may extend in a direction, referred to for clarity as a lug-direction LD. The lug-direction LD is indicated in Figures 2 and 3 as a dashed double-headed Arrow. The free end is adapted to be insertable into the ora said conductor connection terminal 18, such as by being dimensioned and shaped to be insertable into the or a said conductor connection terminal 18. The terminal engagement portion 22b may be planar, part planar, or non-planar. The terminal-engagement portion 22b may extend at an angle relative to the spacer portion 22a. The angle is preferably between 0 and 180 degrees, more preferably between 45 and 160 degrees, even more preferably between 60 and 120 degrees. In the shown embodiment, the angle is a 90 degree angle but any non-right angle may be an option. In other words, the earthing lug 22 may be or may be substantially L shaped but non-L shaped may be an option. For example, the earthing lug may be curved or part curved. The terminal-securing element 24, also referred to as a terminal-securing means or portion, in-use secures or enables securing or immobilising of the or at least one conductor connection terminal 18, directly or indirectly. The terminal-securing element 24 may be provided as a clamping element or clamp, an adhesive, a bracket, a protrusion, any other suitable securing element, and any combination thereof. In the preferred embodiment, the terminal-securing element 24 includes at least one bracket 28 extending from the back box 14, and more preferably from the backplate 20b thereof. Preferably in the shown embodiment, the terminal-securing element 24 includes a plurality of brackets 28. The brackets 28 preferably face each other. In other words, they are in an opposing or mirror configuration relative to each other. Similarly to the earthing lug 22, the or each bracket 28 may have a spacer portion, referred to as a securing spacer portion 28a for clarity, and a securing terminal-engagement portion 28b. The or each bracket 28 and / or the securing terminal-engagement portion 28b thereof has a width, a height and a thickness. The length of the securing terminal-engagement portion 28b may extend along a direction, referred to as a spacer direction SD for clarity. The spacer directions SD of two brackets 28 are shown in Figure 2 as dashed double-headed Arrows. Preferably, the spacer directions of at least two said brackets 28 are parallel or co-linear, but non-colinear and non-parallel may be options, such as angled relative to each other. The spacer directions SD may, for example, be perpendicular to each other. All brackets 28 and / or securing spacer portion 22a thereof may have the same width but at least two brackets 28 may have different widths. In the first embodiment, one of the brackets 28 has a smaller width than at least one other bracket 28. The mismatching widths may be advantageous to during the insertion and securing of the terminals 18 into the back box 14, as will be explained hereinafter. The securing terminal-engagement portion 22b extends from the securing spacer portion 22a, forming an angle therewith. The angle is preferably a right angle but this is not critical. In other words, the or each bracket 28 is or is substantially T- or L-shaped. The securing terminalengagement portion 22b may extend in a plane parallel or substantially parallel to the backplate 20b. Preferably, the terminal-securing means or terminal-securing element 24 may further include a fastener-receiving aperture 30a and a fastener 30b engageable with the fastener-receiving aperture 30a. The fastener-receiving aperture 30a is positioned in the backplate 20b as shown but away from the backplate, such as in a back box peripheral wall, may be envisioned. The electrical interfacing device 16 in-use provides an interface for electrically connecting the faceplate 12 and more preferably the or each socket 12a thereof, to the at least one conductor connection terminal 18 within the back box 14. In other words, the electrical interfacing device 16 provides a path to enable an electrical current to move therealong to the or each socket 12a. The electrical interfacing device 16 is best shown in Figures 4 and 5. The electrical interfacing device 16 is in-use received, positioned or positionable or receivable in the back box cavity. The electrical interfacing device 16 may also be referred to as a header connector or an adapter. The electrical interfacing device 16 has an interface support body 32 and a conductive projection 34 but any of the above may be omitted and / or a plurality of any of the above may be provided. Optionally, the electrical interfacing device 16 may have a main plane 36, illustrated in Figure 5 as a dashed-dotted line. The interface support body 32 has a wall portion 38, a header cavity 40, electrical connectors 42 and an aperture 44 but any of the above may be omitted and / or a plurality of any of the above may be provided. The wall portion 38 is preferably formed at least in part of a non-conductive material, such as plastics. The wall portion 38 has an outer surface. The outer surface is preferably formed of a plurality of outer sub-surfaces. The interface support body 32 is preferably formed as a parallelepiped, and more preferably a cuboid. Preferably, the wall portion 38 defines at least in part of one or more of the plurality of cavities 40. The header cavity 40 provides a volume of within which the electrical connectors 42 are at least in part received or at least in part receivable. The electrical connectors 42 in-use provide an electrical pathway from the or each conductive projection 34 to the faceplate 12. The electrical connectors 42 are preferably electrical wires or cables but any alternative may be envisioned. For example, the electrical connections may be traces on a Printed Circuit Board. The electrical connectors 42 include at least one live electrical connection, and at least one neutral electrical connection. The electrical connectors 42 also include at least one earthing electrical connection but this is optional as some socket types may be devoid of an earth pin. The header cavity 40 may be partially or completely filled with one or more electrical connectors 42. For instance, if the electrical connectors 42 are electrical wires having a circular cross-section and the or a said header cavity 40 is also circular in cross-section, the diameter of the header cavity 40 may match or substantially match the diameter of a said electrical wire. This would result in the header cavity 40 being entirely or substantially entirely filled with the electrical wire. Optionally, the wall portion 38 of the interface support body 32 is preferably formed by surrounding the one or more electrical connectors 42 with insulating material during an injection moulding process. The or each header cavity 40 are preferably formed due to the presence of one or more electrical connectors 42 preventing insulating material from occupying the exact same volume as the electrical connectors 42. However, it could be envisioned that the or each header cavity may be formed separately, before insertion of the one or more electrical connectors in each header cavity. There are preferably two distinct cavities 40 in the preferred embodiment but any number may be envisioned, such as none, one, two or at least three. There may be as many cavities 40 as there are electrical connectors 42. The, each or a said header cavity 40 may be sealed or sealable, such as by the faceplate 12. Alternatively, the, each or a said header cavity 40 may have at least one opening through the wall portion 38. Preferably, there are two header cavities 40. Optionally, the, each or at least one conductive projection 34 may extend through one or both cavities 40. The, each or at least one conductive projection 34 may even partition a said header cavity 40 into sub-cavities. The aperture 44 in-use received at least part of the or a said conductive projection 34 therein. The aperture 44 extends through the wall portion 38 from the outer surface to the, each or at least one said header cavity 40. The aperture 44 may be elongate. In other words, the aperture 44 may be a slit. Preferably, there are as many apertures 44 as there are conductive projections 34, however, a greater or smaller number of apertures may be considered. For example, one aperture 44 may receive a plurality of conductive projections 34 therein. In the shown embodiment, there are three apertures 44, referred to as first aperture 44a, second aperture 44b, and third aperture 44c. Preferably, the main plane 36 may extend through the, each or at least one aperture 44. A conductive projection 34 may be referred to as a pin, a pin element, a prong or a plate. The conductive projection 34 extends or is arrangeable so as to extend from the interface support body 32 and terminates at a tip or tip region 46. The tip region 46 may be tapered in cross-section but non tapered, such as rounded, may be envisioned. The extent of the conductive projections 34 from the tip region 46 to where the conductive projection 34 emerges from the interface support body 32 has a length which may be referred to as the projection emergent length 48 for clarity. Preferably the whole of the conductive projection 34 is formed of an electrically conductive material, such as metal. However, it may be envisioned that only part of the conductive projection may be formed of a conductive material. The conductive projection 34 may be electrically connected or connectable to the faceplate 12. The conductive projection 34 may include a planar wall portion 38. The planar wall portion 38 extends in or defines a plane. The plane of the conductive projection 34 may optionally be coplanar with the main plane 36 but non-coplanar, such as parallel or even non-coplanar and nonparallel may be envisioned. Preferably, the planar wall portion 38 forms the whole of the conductive projection 34. Preferably there is a plurality of conductive projections 34, which may be referred to as first conductive projection 34a and a second conductive projection 34b for clarity. There may be a third conductive projection 34c if at least three conductive projections 34 are provided. Further conductive projections may be similarly incrementally numbered, for clarity. The conductive projections 34 are preferably electrically insulated from each other. The first conductive projection 34a extends or is extendable through the aperture 44 or, the first aperture 44 if a plurality of apertures 44 is provided. The second conductive projection 34b extends or is extendable through a said aperture. The aperture 44 may be the first aperture 44a or a second aperture 44b. If a third conductive projection 34c is provided, the third conductive projection 34c extends or is extendable through a said aperture 44. The aperture 44 may be any of: the first aperture 44a, the second aperture 44b, and a third aperture 44c. If a plurality of conductive projections 34 extend through the same aperture, they are preferably spaced apart from each other for electrical insulation. At least one of, and more preferably, each of the first conductive projection 34a, the second conductive projection 34b, and the third conductive projection 34c preferably includes a planar wall portion 38. The planar wall portions of the first, second and / or third conductive projections 34 define first, second and / or third planes. At least two and preferably all of the first, second and third planes may be coplanar with each other, although non-co-planar may be options. One or more of the first plane, second plane and third plane may be co-planar with the main plane 36. Any further planes of any further conductive projections may be coplanar or parallel with the main plane 36. The conductor connection terminal 18 may also be referred to as a terminal for simplicity. As shown in Figures 6 and 7, the conductor connection terminal 18 has a housing 50, a securing mechanism 52, a conductive protrusion 54, and a conductive bridging connector 56 but any of the above may be omitted and / or a plurality of any of the above may be provided. The housing 50 in-use provides support for the other components of the terminal 18. Preferably, the housing 50 is formed at least in part of an insulating material, such as plastics. The housing 50 may therefore be referred to as an insulating material housing. The insulating material may be translucent or transparent. A transparent or translucent material enables a user to see within the housing 50, and be able to check electrical connectors received within. The housing 50 has a housing body 58, an exit port 60 and an entry port 62 but any of the above may be omitted and / or a plurality of the above may be provided. The housing body 58 includes a base wall 58a, a top wall 58b, one or more lateral walls 58c, a first end wall 58d, and a second end wall 58e. The lateral walls 58c preferably connect the base wall 58a to the top wall 58b. Preferably, there are at least two spaced-apart lateral walls 58c. The second end wall 58e is opposite the first end wall 58d. Each of the first end wall 58d and the second end wall 58e connects to all of: the base wall 58a, the top wall 58b, and the lateral walls 58c. The exit port 60 preferably includes at least one exit aperture. The at least one exit aperture is preferably provided in the second end wall 58e. The conductive protrusion 54 extends through the exit aperture outwardly of the housing 50.The exit aperture may be partly or fully filled with the conductive protrusion 54. The entry port 62 in-use receives at least one electrical connector 26 such as an electrical wire, therein. The entry port 62 includes an entry aperture or entry recess 44. The entry aperture is provided in the first end wall 58d. The entry aperture may be dimensioned so as to cover a minor extent or a major extent of the first end wall 58d. Preferably the conductor connection terminal 18 has at least two entry ports 62, but any number, such as one, three, four or at least five may be envisioned. Preferably, the entry aperture is spaced apart from the base wall 58a by a distance equal or substantially equal to the distance between the exit aperture and the base wall 58a. The securing mechanism 52 in-use enables securing of an electrical connector 26, such as a wire, within the housing 50. The securing mechanism 52 preferably includes a clamp or vice but any other alternatives may be envisioned. The securing mechanism 52 may be actuatable via a user-engagement portion 52a. In the preferred embodiment, the user-engagement portion 52a includes a lever. The clamp may be provided in the shape of a U-shaped or substantially U- shaped plate. The lever is movable between a first position and a second position. When in the first position, the clamp is uncompressed by the lever such that the U-shaped clamp clamps any electrical connector received within the housing 50. When the lever is in the second position, the lever is adapted to apply an opposing force against the U-shaped plate. The opposing force may prevent or inhibit the U-shaped plate from compressing any electrical connector within the housing 50. The opposing force may enable an electrical connector to be inserted and / or removed from within the housing 50. Any alternative to the above described mechanism may be envisioned. For example, a vice may be provided by a movable screw or pin. The user can push and / or screw the movable pin or screw to selectively compress an electrical connector within the housing 50. The conductive protrusion 54 may also be referred to as a tongue. The conductive protrusion 54 has a housing-engaging portion 64 and extends to terminate at a free end 66. Therebetween, the conductive protrusion 54 is preferably elongate such that the conductive protrusion 54 has a length, a width and a thickness. The length is the distance from the housing-engaging portion 64 to the free end 66. The length is preferably greater than the width. The width is preferably greater than the thickness. In other words, the conductive protrusion 54 preferably includes a plate or plate element. In the first embodiment, the plate element 68 has a plurality of plate sub-sections 70. At least one, and preferably each sub-section 70 is preferably planar. The plate 68 may be folded. The plate sub-sections 70 may be connected to each other at a non-flat angle. As shown in Figure 7, a first plate sub-section 70a extends from the housing 50 in a generally parallel direction relative to the base wall 58a. A second plate sub-section 70b forms an angle with the first plate sub-section 70a. The angle may be perpendicular but preferably is obtuse. A third plate sub-section 70c is connected to the second plate sub-section 70 at a preferably obtuse angle. At least one of the plate sub-sections may be or be substantially parallel to the second end wall 58e. A fourth plate sub-section 70d may connect to the third plate sub-section 70c at an obtuse angle. The fourth plate sub-section 70d may therefore extend in a plane angled to intersect with a plane defined by the second end wall 58e. A fifth plate sub-section 70e may connect to the fourth plate sub-section 70d at a, preferably obtuse, angle. Optionally, the fifth plate sub-section 70e may be or be substantially parallel to the base wall 58a and / or to the first plate sub-section 70a. A sixth plate sub-section 70f may connect to the fifth plate sub-section 70e at a, preferably right, angle. The sixth plate sub-section 70f may be referred to as a lip or a positioning lip. The fifth and / or sixth plate sub-sections 70e,70f may optionally be formed of or coated with an insulating material for security. Although six plate sub-sections are provided here, the exact number is not critical. The plate subsection which contains the free end 66 may alternatively be referred to as an end plate subsection. Preferably the conductive protrusion 54 has a contact portion 72. The contact portion 72 in-use may enter into contact with the contact portion 72 of a second said conductive protrusion 54. The contact portion 72 is positioned along the length, between the housing-engaging portion 64 and the free end 66. Preferably, the contact portion 72 may be spaced apart from the terminal 18 and more preferably from the second end wall 58e thereof by a first distance. The free end 66 is preferably spaced apart from the second end wall 58e by a second distance. The second distance is preferably less than the first distance but equal thereto or greater than the first distance may be an option. The first distance and the second distance are measured along an axis perpendicular to the plane defined by the second end wall 58e. Optionally, one of the sub-sections or part thereof may provide or include the contact portion 72. In the first embodiment, the third plate sub-section 70c may be the parallel or substantially parallel to the second end wall 58e. Furthermore, the third plate sub-section 70c or part thereof may provide the contact portion 72. Furthermore, the conductive projection 34 may be further electrically connected or connectable to a said conductive protrusion 54, preferably by abutment thereagainst. The conductive bridging connector 56 connects the electrical connector 26 received in the or a said entry port 62 to the conductive protrusion 54. The conductive bridging connector 56 may be connectable, connected or may even be integrally formed with the conductive protrusion 54. An example of a suitable terminal 18 may be or be substantially a WAGO 221 terminal which has been modified to further incorporate an exit port in the second end wall 58e and a conductive protrusion 54 extending through the exit port. Furthermore, the conductive protrusion 54 must be suitably dimensioned to enable the safe passage of electrical current therethrough. Preferably, the system 10 includes a sub-system or kit. The sub-system 10 may include a plurality of conductor connection terminals 18 and / or at least one immobiliser 74. There may be at least two terminals 18 which may be referred to as first conductor connection terminal and second conductor connection terminal for clarity. Correspondingly, components, such as the conductive protrusions 54, of the first conductor connection terminal and second conductor connection terminal may be referred to as “first” and “second” for clarity. Any additional terminals 18, and parts thereof, may be similarly incrementally numbered for clarity. Terminals 18 may also be referred to as a “live”, “neutral”, or, optionally, “earth”, according to the electrical connectors 26 connected to the respective terminals 18. The first and second terminals 18 may be arranged such that the first contact portion 72 is positioned relative to the second contact portion 72 so as to match or substantially match the position of at least one conductive projection 34. Additionally or alternatively, the first and second conductor connection terminals 18 may be arranged pairwise so that their second end walls 58e face each other, and the conductive contact portions 72 of the first and second conductive connection terminals 18 are abuttable or abutted against each other. Preferably, the contact portions 72 are the only part of the conductive protrusions 54 of a pair of opposed conductor connection terminals 18 which are in contact. The remainder of the conductive protrusions 54 may be spaced apart from each other to provide a conductive-projection-receiving gap. In other words, the first and second terminals 18 may be arranged in a mirror or opposing configuration such that their conductive protrusions 54 extend in opposite directions towards and optionally enter into contact at least temporarily with each other, directly or indirectly. The contact portions 72 of both conductive protrusions 54 may match the position of one conductive projection 34. Thus, the contact portions 72 may contact or be adapted to enter into contact with the same conductive projection 34. Alternatively, first and second terminals 18 may be positioned side by side, with their lateral walls abutting, facing or substantially facing each other, and the conductive protrusions 54 extending parallel with each other in the same direction. The contact portions 72 of the first and second terminals 18 engage with two distinct conductive projections 34. The contact portions 72 match the positions of the conductive projections 34. If the conductive projections 34 are staggered, the contact portions 72 may also be staggered. Preferably, there are at least three terminals 18. The three terminals 18 are arranged so that their lateral walls 58c face or abut each other. The three terminals 18 may even be aligned in a column or line. In all cases, the conductive protrusions 54 of terminals 18 of a column are insulated, preferably via an air gap, from each other. One of the three terminals 18 is a “live” terminal, a second of the three terminals 18 is a “neutral” terminal whilst the third terminal 18 is an “earth” terminal. The exact order of the terminals 18 is not critical, as long as the order of the conductive projections 34 of the electrical interfacing device 16 matches the order of the terminals 18. In the shown embodiment, the “earth” terminal 18 is positioned centrally between the “live” and the “neutral” terminals 18 but this position is not critical. The “earth” terminal 18 is preferably positioned relative to the other terminals 18 so as to enable the earthing lug to be inserted or insertable within the “earth” terminal 18. Preferably, the three terminals 18 are mirrored by a further three terminals 18 such that there are six terminals 18. If the initial three terminal 18 form a first column, the further three terminals 18 may form a second column, as most clearly shown in Figure 6. The further terminals 18 have their conductive protrusions 54 extending towards, and more preferably abutting or biased into abutment with the conductive protrusions 54 of the initial three terminals 18. Thus, each further terminal 18 is pairwise connected to one of the initial terminals 18. Each pair may be considered to form a row. Each row enables continuity in the circuit even when the sockets are not fitted and / or even when no fixture is engaged with a socket. Each terminal 18 may have any number of entry ports 62. The number of entry ports 62 of a row and / or column of terminals 18 may be the same for a majority or all terminals 18. However, different numbers of entry ports within a row and / or within a column may be considered. Optionally, one or both earth terminals 18 may comprise an additional entry port 62 relative to the non-earth terminals 18 so as to accommodate the earthing lug 22 within the additional entry port 62. In the illustrated embodiment, all terminals 18 except the earth terminals 18 have two entry ports 62, whilst the “earth” terminals 18 preferably have three entry ports 62. Any number of entry ports for any of the terminals may be envisioned however, such as one, two, three, or at least four. The or each immobiliser 74 in-use immobilises at least one terminal 18 relative to another terminal 18, at least temporarily. The immobiliser 74 in the first embodiment includes an immobiliser sheet or plate 76. The height of the securing spacer portion 22a may match or substantially match a thickness of the immobiliser plate 76 if an immobiliser plate 76 is provided. Referring back to Figure 6, the immobiliser plate 76 preferably further comprises a fastener through-bore 76a. The fastener 30b of the back box 14 may be received through the fastener through-bore 76a. The immobiliser plate 76 is preferably formed at least in part of an electrically insulating material, such as plastics. More preferably, the immobiliser plate 76 includes a transparent or translucent material, such as acrylics. An example of a suitable material is Perspex (RTM). Transparency or translucency enables the user to see through the immobiliser plate 76. Being able to see through the immobiliser plate 76 facilitates finding the fastener-receiving aperture 30a if provided in the back box 14. The fastener through-bore 76a of the immobiliser plate 76 is alignable with the fastener-receiving aperture 30a. Preferably at least one and beneficially, all terminals 18 are secured to the immobiliser plate 76, for example via an adhesive, such as glue or a double sided adhesive tape. In use, the user wanting to connect a faceplate 12 to a circuit in the wall 78 starts by obtaining the system 10 as described above. If any features of the system 10 are already present, the user may only need to source one or a sub-set of the components of the system 10. System 10 is preferably at least in part pre-assembled at the factory and be supplied to the user, loose with the back box, ready for installment. Alternatively, any or any combination of the steps below may be carried out in situ. During the first fix, if not already provided, a wall cavity is formed in the wall 78. The back box 14 is inserted into the wall cavity. In other words, the back box 14 is fixed into position on the unfinished wall of the installation or building. Beneficially, the unfinished wall may be chased in, in the shape of the back box 14 in order to sink / part sink the back box 14 into it, and secure the back box 14 into position, such as by screws or other means. The, each or at least one terminal 18 may be installed in the back box 14 prior to, during or after insertion of the back box 14 into the wall cavity. The, each or at least one terminal 18 may been associated with, positioned in, or connected to the back box 14 in a standard way. Preferably however, in the first embodiment, the, each or at least one terminal 18 is installed into or positioned in the back box 14 as follows. If not already done, the, each or at least one terminal 18 is immobilised relative to each other by the immobiliser 74, which is preferably an immobiliser plate 76. This may involve fastening, here by adhering, the, each or at least one terminal 18 to the immobiliser plate 76. As this step does not need to be carried out in situ, it may be done anywhere, such as in a workshop or in the factory, and any time prior to insertion of the immobiliser plate 76 into the back box 14, which may further increase the comfort of the user, accelerate installation on the day and increase the accuracy of positioning of the terminals 18 relative to each other. The electrical connectors 26, such as electric wires or cables preferably covered in pvc insulation, are provided either as singles or as part of a cable assembly. The electrical connectors 26 are cut to the right length. The electrical connectors 26 are inserted into the back box 14 through a knockout cable entry, in other words, through an aperture in a peripheral wall 20a. During the first fix, the user electrically connects the electric connectors 26, such as electric wires, to the terminals 18. Optionally, an insulating coating of the electric wires may need to be partly stripped back or cut away, to ensure a stable electric contact within the housing 50. In other words, the ends of the electrical connectors 26 may be stripped of the insulation. The user may then push the electric connector 26 into an entry port 62 and into abutment with the conductive bridging connector 56. There is preferably one electric wire per entry port 62. If the terminal 18 has more than one entry port 62, one or more additional electric connectors 26 may be inserted into the additional entry port or ports 62 and into engagement with the conductive bridging connector 56. Thus, the electrical connectors 26 are appropriately connected with the terminals 18. A first benefit of the invention is that only the correct amount of cable is used as opposed to the normal installation work which normally allows for extra length, making sure there is enough length for the second fix. Frequently, the length is found to be excessive, the excess length is then discarded, meaning the waste of cable or the excess length is folded inside the back box, creating hot spots, and thus overheating, in the cable. A second benefit of the invention is that the connection of all electrical connectors 26 into the accessories is carried out during the first fix process, when the user can work at close proximity to the back box 14, instead of sometimes having to attach accessories from a distance, such as leaning over a worktop, without having a clear view over the connections being made. A third benefit of the invention is that, by carrying out the connection of the electrical connectors 26 to the terminals 18 during the first fix, before the back box 14 is plastered into position, the continuity and resistance of the terminals 18 can be checked. If any faults are identified, these can be rectified at this early stage. Optionally, the, each or at least one electrical connector received within a terminal 18 may be secured or immobilised by the securing mechanism 52. In the shown embodiment, this involves a clamping mechanism which is actuated by a user-engagement portion 52a, here in the form of a lever. The benefit of a clamping mechanism of the terminals 18 is that the connections of the electrical connectors 26 to the terminals 18 is done via clamping which secures the integrity of the electrical connectors 26, instead of screwing the electrical connectors 26. Screwing often results distortion of their shape, typically circular in cross-section. Screwing may even result in the electrical connectors 26 being cut altogether, thus creating an open circuit. Alternatively, the screw may be too loose which, again, will create a hot spot, causing overheating. The clamping mechanism, however, will ensure the correct pressure is applied to the electrical connector 26 without distorting the electrical connector 26, preferably circular, shape at all. Each terminal 18 should only receive electrical connectors 26 of the same type, in other words, live, neutral or, if provided, earth. Correspondingly, at least two and more preferably three or multiples of three terminals may be provided. Thus, there may be a “live” terminal” in which the live connector or connectors are received. Similarly, there may be a “neutral” terminal in which the neutral connector or connectors are received. Furthermore, there may be an “earth” terminal in which the earth connector or connectors, and optional the earthing lug if provided, are received. The immobiliser plate 76 and / or at least one terminal 18 is moved into the back box 14 as indicated by Arrow D in Figure 8, and is preferably positioned against the backplate 20b as shown in Figure 9. The immobiliser 74 and / or the at least one terminal 18 is secured by the terminal-securing element 24. Depending on the size of the back box 14 and the position of any securing brackets 28, the immobiliser 74 may be moved toward and into abutment with the backplate 20b in a specific location of the back box 14. Here, as shown in Figure 10, the bracket 28 of smaller width provides a sufficient gap between the smaller bracket 28 and the back box peripheral walls 20a to enable the immobiliser plate 76 to be moved into abutment with the backplate 20b. The immobiliser plate 76 is then moved into engagement with the at least one bracket 28. This may involve translating the immobiliser plate 76 towards the larger bracket 28, optionally parallel with the spacer direction SD of the larger bracket 28 as indicated by Arrow E until part of the immobiliser plate 76 is received between the securing terminal-engagement portion 28b and the backplate 20b. The immobiliser plate 76 may then be translated perpendicular to the spacer direction SD of the larger bracket 28, as shown by Arrow F in Figure 10. If a smaller bracket 28 is provided, the immobiliser plate 76 may be entered into engagement with the smaller bracket 28, preferably by being at least in part received between the backplate 20b and the securing terminal-engagement portion 28b of the smaller bracket 28. If an earthing lug 22 is provided, the cantilevered terminal-engagement portion 22b thereof is preferably received within one of the terminals 18 by movement of at least one of the conductor connection terminals 18. This enables the back box 14 to be earthed or grounded, such that the safety to the user is increased. Preferably, if the immobiliser plate 76 has at least one fastener through-bore 76a and if the back box 14 has a fastener-receiving aperture 30a, the arrangement of the at least one bracket 28 and / or the earthing lug 22 may ensure the automatic alignment of the or a said fastener through-bore 76a with the fastener-receiving aperture 30a. A fastener 30b, such as a screw or bolt, may be received through both the fastener through-bore 76a and the fastener-receiving aperture 30a, to further secure the immobiliser plate 76. Here, the fastener 30b is a screw which is rotated as per Arrow G in Figure 11. The automatic alignment may further increase the ease and speed of installation of the terminals 18 in the back box 14. In other words, once the electrical connectors 26 are secured to the terminals 18 by the clamping elements, the immobiliser plate 76 is secured to the back box 14, and preferably earthed by the earthing lug. Prior to plastering, a protective guard or cover may be temporarily positioned to obturate the back box 14 so as to prevent or inhibit ingress of plaster, liquids, dust or other unintentional objects into the back box 14. The user plasters the wall. The protective cover is removed after the plastering is completed. If not already integrally formed therewith or connected thereto, the faceplate 12 may be connected to the electrical interfacing device 16 after or, preferably, before the electrical interfacing device 16 is connected to the terminals 18. Again, this step does not need to be done in-situ at the back box 14, unlike in the prior art. Instead, the user can connect the faceplate 12 to the electrical interfacing device 16 anywhere, such as in the comfort of a workshop. If the wall portion 38 of the interface support body 32 is not formed by injection moulding around the electrical connectors 42, the header electrical connectors 42 may be received in the at least one header cavity 40. In the first embodiment, one of the cavities 40 is divided by the conductive projections 34 into subcavities. The live header electrical connector 42 extends in one subcavity and is connected to one of the conductive projections 34. The neutral header electrical connector 42 extends in the other subcavity and is connected to another of the conductive projections 34. The conductive projections 34 are positioned between the electrical connectors 42. The earth header electrical connector 42 preferably extends in the second cavity 40 although this is not critical, and is connected to the third of the conductive projections 34. The relative positions of the live, neutral and earth conductive projections 34 need to match the arrangement of the live, neutral and earth terminals 18 in the back box 14. The other ends of the electrical connectors 42 are connected to the corresponding pins of the or each socket 12a of the faceplate 12. If there is a plurality of sockets 12a, the sockets 12a are preferably connected in parallel rather than in series. Figure 12 illustrates a schematic representation of how the sockets 12a are connected via electrical connectors 42 to the conductive projections 34 of the electrical interfacing device 16. The electrical interfacing device 16 is inserted into the back box cavity, as per Arrow H in Figure 13. The conductive projections 34 are moved into engagement, preferably by abutment, with the contact portion 72 of at least one conductive protrusion 54. As the plate sub-sections 70 contiguous with the contact portions 72 of paired terminals 18, and more preferably the fourth plate sub-sections 70d, are angled away from each other, each pair of conductive protrusions 54 effectively forms a funnel or guide. The funnel helps to guide the tip of the conductive projection 34. As the conductive projections 34 are moved further towards the backplate 20b, the conductive projections 34 cause paired conductive protrusions 54 to become spaced apart from each other. However, as the conductive projections 34 are preferably wholly conductive in the first embodiment, electrical contact is maintained between the paired conductive protrusions 54, as well as into the electrical interfacing device 16. The interface support body 32 is lowered until it is seated on the conductive protrusions 54, and more preferably on the fifth plate sub-sections 70e, as shown in Figure 14. Optionally, the upstanding end plate sub-sections 70f abut against the outer surface of the interface support body 32, to further secure the interface support body 32 and prevent or inhibit accidental displacement thereof. Furthermore, each end plate sub-section 70f may be spaced apart from its terminals 18 by a distance such that, when the conductive projections 34 displace the conductive protrusions 54 from each other, the end plate sub-sections 70f may be pushed into abutment with their terminal 18. The terminals 18 thereby prevent or inhibit further outwardly displacement of the end plate sub-sections 70f. When the interface support body 32 is seated between the free ends 66 and on the fifth plate subsections 70e, the conductive projections 34 extend towards the backplate 20b and, if provided, the immobiliser plate 76. Preferably, the projection emergent length 48 is less than the distance from the interface support body 32 to the backplate 20b and / or if provided, the immobiliser plate 76. This ensures a gap is formed between the tip region 46 and the backplate 20b and / or immobiliser plate 76. In the absence of such a gap, the tip region 46 would abut against the backplate 20b and / or immobiliser plate 76, which may cause any combination of the following issues: preventing or inhibiting the interface support body 32 from being seated in the conductive protrusions 54, preventing the faceplate 12 from being secured to the back box 14, damaging the conductive projections 34, and preventing or inhibiting a secure electrical connection of the conductive projections 34 to the conductive protrusion or protrusions 54. The abutment of the tip region 46 against the backplate 20b may also result in electrical current flowing from the conductive projection 34 to the backplate 20b. Preferably, the immobiliser plate 76 is formed of an insulating material such that any abutment of the tip region 46 would not result in the electrical current passing through the immobiliser plate 76. In other words, the user push fits the electrical interfacing device 16, which is preferably attached to the accessory, such as the faceplate 12 with a socket, into engagement with the terminals 18. Once the electrical interfacing device 16 is inserted into position fully within the back box cavity, the faceplate 12 can be secured to the back box 14, typically by one or more fasteners such as screws. The or each socket 12a is ready for use. The user may optionally carry out full testing on the electrical installation prior to use. Figure 15 shows a plug 79 inserted into one socket 12a whilst another plug 79 is being moved towards the second socket 12a for engagement therewith. Thus, there is provided a method of connecting a faceplate 12 to an electrical circuit within a wall 78, the method comprising the steps of: a] providing a system 10; b] inserting into a wall cavity the back box 14 having the conductor connection terminals 18 within; and electrically connecting a live electrical connector 26 with a first conductor connection terminal 18, electrically connecting a neutral electrical connector 26 with a second conductor connection terminal 18, and optionally electrically connecting an earth electrical connector 26 with a third conductor connection terminal 18; c] moving the electrical interfacing device 16 so that the conductive projections 34 contact corresponding conductive protrusions 54 of the conductor connection terminals 18; and d] electrically connecting the faceplate 12 to the electrical interfacing device 16 before, during or after step c], and closing the back box cavity with the faceplate 12. The method may further comprise a step prior to step b] of: moving at least one of the conductor connection terminals 18 until the earthing lug 22 is received within the conductor connection terminal 18 of the at least one conductor connection terminal 18. Referring now to Figure 16, there is shown part of a second embodiment of a system 110. The second embodiment is similar to the first embodiment. Features of the second embodiment which are the same or similar to features of the first embodiment have similar reference numerals with the prefix “1” added. The second embodiment of the system 110 is similar to the first embodiment, having similar or same electric back box 114, electrical interfacing device, at least one conductor connection terminal 118, and optional faceplate. Detailed description of the common features and of the caveats is omitted for brevity. Unlike the first embodiment, the brackets 128 of the terminal-securing element 124 of the back box 114 preferably do not face each other. In other words, they are at an angle relative to each other. More preferably, the brackets 128 are at or substantially at a right angle relative to each other. The spacer directions are preferably perpendicular to each other. Preferably, one of the brackets 128 has the same orientation as the earthing lug 122. The spacer direction of the bracket, which may be the small bracket as illustrated, is colinear or parallel with the lug direction of the earthing lug 122. The back box peripheral walls are not shown for clarity. The uses of the second embodiment of the system 110 are the same as the first embodiment. Detailed description of the common steps and of the caveats is omitted for brevity. Upon securing of the terminals 118 mounted to the immobiliser plate 176 into the back box 114, the immobiliser plate 176 is lowered into the back box 114, similarly to the first embodiment. The initial position of the immobiliser plate 176 is illustrated in Figure 16 in dashed lines. The immobiliser plate 176 is moved, here by translation as indicated by Arrow J, until the immobiliser plate 176 is engaged with the brackets 128, in particular by being at least partly positioned between the securing terminal-engagement portion 128b and the backplate 120b. The earthing lug 122 is also received within a terminal 118. It may be envisioned that the outline in dashed lines may be an intermediate position rather than the initial position. For example, the immobiliser plate may be initially positioned spaced apart from the large bracket before being moved towards the large bracket in a direction perpendicular to Arrow J. The initial and / or intermediate positions may or may not overlap with the final position. The fastener 130b, if provided, is used to further secure the terminals 118 to the back box 114. As the fastener 130b in the second embodiment is preferably a screw, the screw is inserted into overlapping fastener-receiver aperture and fastener through-bore 176a, before being rotated as indicated by Arrow K. Referring now to Figure 17, there is shown part of a third embodiment of a system 210. The third embodiment is similar to the first embodiment. Features of the third embodiment which are the same or similar to features of the first embodiment have similar reference numerals with the prefix “2” added. The third embodiment of the system 210 is similar to the first embodiment, having similar or same electric back box 214, electrical interfacing device, at least one conductor connection terminal 218, and optional faceplate. Detailed description of the common features and of the caveats is omitted for brevity. In the third embodiment, no earthing lug is provided. The back box peripheral walls are not shown for clarity. The uses of the third embodiment of the system 10 are the same as the first embodiment. Detailed description of the common steps and of the caveats is omitted for brevity. The immobiliser plate 276 is moved from an initial position in the direction of Arrow L into an intermediate position, before being moved to the final position as indicated by Arrow M. The fastener 230b, which is preferably a screw, is used to secure or further secure the immobiliser plate 276, preferably by rotation as indicated by Arrow N. If instead of the earthing lug, the back box 214 includes a standard earthing screw, not shown, the user may need to connect the standard earthing screw to the earth terminal 218 in a standard manner known in the art. For example, an electrical wire may be used to electrically connect the earthing screw to the terminal 218 if it is required that the back box 214 be earthed. Referring now to Figure 18, there is shown part of a fourth embodiment of a system 310. The fourth embodiment is similar to the first embodiment. Features of the fourth embodiment which are the same or similar to features of the first embodiment have similar reference numerals with the prefix “3” added. The fourth embodiment of the system 310 is similar to the first embodiment, having similar or same electric back box, electrical interfacing device 316, at least one conductor connection terminal, and optional faceplate. Detailed description of the common features and of the caveats is omitted for brevity. At least one of, and more preferably each conductive projection 334 of the electrical interfacing device 316 and more preferably, a planar wall portion thereof comprises an insulating core 380 and a plurality of distinct conductive faces 382. The conductive faces 382 are electrically insulated from each other. The or at least two said conductive faces 382 may be provided on opposite sides of the insulating core 380. Thus, the conductive faces 382 are electrically isolated from each other by the insulating core 380. The uses of the fourth embodiment of the system 310 are the same as the first embodiment. Detailed description of the common steps and of the caveats is omitted for brevity. Upon insertion of the conductive projections 334 in between paired conductive protrusions, the conductive projections 334 space the conductive protrusions apart. Preferably, a said conductive face 382 of the conductive projection 334 is electrically in contact with one conductive protrusion of a pair of terminals. The electrical interfacing device 316 of the fourth embodiment causes the electrical current entering the electrical interfacing device 316 to traverse the electrical interfacing device 316 before exiting via the second conductive protrusion. In other words, the protrusions and the electrical interfacing device 316 are connected in series rather than in a parallel. This may be beneficial to enable testing of the electrical circuit, for example, if the electrical interfacing device 316 is connected to or is a testing device. There may even be no faceplate in the fourth embodiment. Referring now to Figure 19, there is shown part of a fifth embodiment of a system 410. The fifth embodiment is similar to the first embodiment. Features of the fifth embodiment which are the same or similar to features of the first embodiment have similar reference numerals with the prefix “4” added. The fifth embodiment of the system 410 is similar to the first embodiment, having similar or same electric back box, electrical interfacing device, at least one conductor connection terminal 418, and optional faceplate. Detailed description of the common features and of the caveats is omitted for brevity. The conductive protrusion 454 and / or at least one plate sub-section 470 thereof of at least one terminal 418 may have curvature. Furthermore, the entry aperture is spaced apart from the base wall 458a by a distance less than the distance between the exit aperture and the base wall 458a. In other words, the exit aperture of the exit port 460 is distal along the second end wall 458e from the immobiliser plate 476 and / or base wall 458a, whereas in the first embodiment, the exit aperture is proximal to the immobiliser plate 476 and / or base wall 458a. The first plate sub-section 470a extends towards at least in part towards the immobiliser plate 476 and / or parallel or substantially parallel with the second end wall 458e. The remainder of the protrusion 454 forms a C- or generally C-shape in top view. The uses of the fifth embodiment of the system 410 are the same as the first embodiment. Detailed description of the common steps and of the caveats is omitted for brevity. Referring now to Figure 20, there is shown part of a sixth embodiment of a system 510. The sixth embodiment is similar to the fifth embodiment. Features of the sixth embodiment which are the same or similar to features of the fifth embodiment have similar reference numerals with the prefix “5” replacing the previous prefix. The sixth embodiment of the system 510 is similar to the fifth embodiment, having similar or same electric back box, electrical interfacing device, at least one conductor connection terminal 518, and optional faceplate. Detailed description of the common features and of the caveats is omitted for brevity. The first plate sub-section 570a extends parallel or substantially parallel with the top wall 558b of the terminal 518. The remainder of the protrusion describes a C- or generally C-shape in crosssection, as shown. However, the free end 566 of the protrusion 554 is positioned proximal to the immobiliser plate 576, unlike the fifth embodiment, where the free end 566 is distal relative to the immobiliser plate 576. The uses of the sixth embodiment of the system 510 are the same as the first embodiment. Detailed description of the common steps and of the caveats is omitted for brevity. Although the electrical interfacing device and the faceplate are distinct portions in the above embodiments, it may easily be envisioned that the electrical interface device and the faceplate may be assembleable, assembled together into or formed as a single monobloc unit. This may remove the need for the user to electrically connect the electrical interfacing device to the faceplate. Preferably, the planar wall portion forms the whole of a conductive projection. However, in an alternative embodiment, the planar wall portion may form only part of the conductive projection. For example, the aperture may be circular in cross-section and the conductive projection may have a cylindrical portion. The planar wall portion may even be omitted entirely. For instance, a conductive projection may be circular or oval in cross-section, rather than rectangular or linear in cross-section. Any other suitable cross-section may be envisioned. Whilst preferably all three of the first, second and third planes are coplanar with each other, it may be that at least two planes may be spaced-apart and parallel with each other. A plurality of planes may even be non-coplanar and non-parallel. At least two planes may be intersecting each other. The plate element of a conductive protrusion may be planar, non-planar or part planar. The conductive protrusion may have curvature, such as along all or at least part of its length. Whilst preferably, the terminal-securing element and / or the earthing lug extend from the backplate, in an alternative embodiment, the terminal-securing element and / or the earthing lug may, for example, extend from a peripheral wall instead of the backplate. Any other element or means for securing a terminal to the immobiliser plate may be envisioned. It may even be envisioned that the immobiliser plate may be omitted completely. At least two terminals may, for example, be secured together, such as by an adhesive. A terminal may be secured to the back box directly, such as by an adhesive. In the above embodiments, the faceplate is a two-gang faceplate, having two sockets. Any number of sockets may be envisioned, such as one socket or at least three. In an alternative embodiment, there may be no paired terminals. Instead, each conductive projection may abut against one protrusion, instead of being receivable between a pair of abutted protrusions. Any of the features and caveats that apply to one of the embodiments may easily be provided or applicable to any of the other embodiments. Whilst a preferred shape may have been specified for any of the above-described features, any alternative shape may be envisioned in any of transverse or lateral cross-section, longitudinal cross-section, inside view, or in plan view. The shape may be any or any combination of: curved, part curved, non-curved, linear, part linear, non-linear, a broken line, any polygon, whether regular or irregular, having one or more chamfered and / or rounded corners, a triangle, a quadrilateral, such as a square, a rectangle, a trapezium, a trapezoid, a pentagon, a hexagon, a heptagon, an octagon, or any other polygon, a cross, an ellipse, a circle, part circular, an oval, or any abstract shape. It is therefore possible to provide a system which enables a faceplate to be connected to a circuit more quickly and easily than in the prior art. It is also possible to provide components of the system individually, for ease of replacement. It is therefore also possible to provide a method of installing a faceplate using the system. The provision of a header connector which can be slotted into abutment with cooperating connectors, increases the ease and speed of installation. The provision of the header connector also enables some of the assembly steps to be carried out beforehand, such as in a workshop and at a greater comfort to the user. The words ‘comprises / comprising’ and the words ‘having / including’ when used herein with reference to the present invention are used to specify the presence of stated features, integers, steps or components, but do not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof. It is appreciated that certain features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable sub-combination. The embodiments described above are provided by way of examples only, and various other modifications will be apparent to persons skilled in the field without departing from the scope of the invention as defined herein.

Claims

1. A system for electrically connecting a faceplate to an electrical circuit within a wall, the system comprising:an electric back box havinga backplate anda plurality of back box peripheral walls connected to the backplate and defining a back box cavity, and;an earthing lug formed of a conductive material;a plurality of conductor connection terminals, each conductor connection terminal comprisingan insulating material housing anda conductive protrusion, wherein the conductive protrusion extends from the insulating material housing; andan electrical interfacing device positioned or positionable within the back box cavity, the electrical interfacing device havingan interface support body anda plurality of conductive projections extending from the interface support body, the conductive projections for electrically connecting to the faceplate, and the conductive projections being further electrically connected or connectable to the conductive protrusions by abutment thereagainst;wherein the earthing lug has a cantilevered terminal-engagement portion terminating at a free end, the free end being configured for insertion into a said conductor connection terminal.

2. A system as claimed in claim 1, wherein the earthing lug further includes a spacer portion extending from the backplate into the back box cavity, the cantilevered terminalengagement portion extending from the spacer portion.

3. A system as claimed in claim 1 or claim 2, further comprising a faceplate.

4. A system as claimed in any one of the preceding claims, wherein the interface support body has a wall portion having an outer surface and defining at least in part a cavity, and a first aperture extending through the wall portion from the outer surface to the at least one cavity; wherein a first conductive projection from the plurality of conductive projections extends through the first aperture; and a second conductive projection from the plurality of conductive projections extends through the first aperture or a second said aperture, the conductive projections being spaced apart from each other for electrical insulation.

5. A system as claimed in claim 4, wherein the electrical interfacing device further comprises a third conductive projection extending through: the first aperture or the second aperture or a third said aperture.

6. A system as claimed in claim 4 or claim 5, wherein one or more of: the first conductive projection, the second conductive projection, and the third conductive projection includes a planar wall portion, the planar wall portion defining a plane.

7. A system as claimed in claim 6, wherein the planes of at least two planar wall portions are coplanar with each other.

8. A system as claimed in claim 6 or claim 7, wherein a planar wall portion comprises an insulating core and two distinct conductive faces provided on opposite sides of the insulating core, the conductive faces being electrically isolated from each other by the insulating core.

9. A system as claimed in any one of the preceding claims, wherein the insulating material housing of at least one of the plurality of conductor connection terminals hasa base wall;a top wall;lateral walls connecting the base wall to the top wall;a first end wall anda second end wall opposite the first end wall, each of the first end wall and the second end wall connecting to all of the base wall, top wall, and lateral walls;the said at least one of the plurality of conductor connection terminals further comprising:an exit port having an exit aperture provided in the second end wall,at least one entry port having an entry recess provided in the first end wall for receiving an electrical conductive element therein, anda conductive bridging connector for connecting an electrical conductive element received in the or a said entry port to the conductive protrusion,wherein the said conductive protrusion extends through the exit aperture outwardly of the insulating material housing, the conductive protrusion having a contact portion, and terminating at a free end.

10. A system as claimed in any one of the preceding claims, wherein the conductive protrusion of at least one of the plurality of conductor connection terminals includes a plate element.

11. A system as claimed in claim 10, wherein the plate element of the conductive protrusion has a plurality of plate sub-sections connected to each other at a non-flat angle.

12. A system as claimed in claim 10 or claim 11, wherein the plate element of the conductive protrusion has curvature.

13. A system as claimed in claim 9 or in any one of claims 10 to 12 when depending on claim 9, wherein the contact portion is spaced apart from the second end wall and / or a plane defined by the second end wall by a first distance, and the free end is spaced apart from the second end wall and / or the plane defined by the second end wall by a second distance, the second distance being less than the first distance.

14. A system as claimed in claim 9 or in any one of claims 10 to 13 when depending on claim 9, whereina first conductor connection terminal of the plurality of conductor connection terminals has a first contact portion;a second conductor connection terminal of the plurality of conductor connection terminals has a second contact portion;wherein at least one of:the first contact portion is positioned relative to the second contact portion so as to match or substantially match the position of at least one conductive projection; andthe first and second conductor connection terminals are arranged pairwise so that their second end walls face each other, and the conductive contact portions of the first and second conductive connection terminals are abuttable or abutted against each other.

15. A system as claimed in any one of the preceding claims, further comprising an immobiliser, the at least two conductor connection terminals being at least temporarily immobilised relative to each other by the immobiliser.

16. A system as claimed in claim 15 wherein the immobiliser includes an immobiliser plate.

17. A system as claimed in any one of the preceding claims, wherein the electrical back box further comprises a terminal-securing element.

18. A system as claimed in claim 17, wherein the terminal-securing element includes at least one bracket extending from the backplate.

19. A system as claimed in claim 17 or claim 18, wherein the terminal-securing element further includes a fastener-receiving aperture and a fastener engageable with the fastenerreceiving aperture.

20. A method of electrically connecting a faceplate to an electrical circuit within a wall, the method comprising the steps of:a] providing a system as claimed in any one of claims 1 to 19;b] inserting the conductor connection terminals into the electrical back box and moving at least one of the conductor connection terminals until the earthing lug is received within the or a said conductor connection terminal;c] inserting the back box into a wall cavity before, during or after step b];d] electrically connecting a live electrical conductive element with a first conductor connection terminal, electrically connecting a neutral electrical conductive element with a second conductor connection terminal, and optionally electrically connecting an earth electrical conductive element with a third conductor connection terminal; ande] moving the electrical interfacing device so that the conductive projections contact corresponding conductive protrusions of the conductor connection terminals.

21. A method as claimed in claim 20, further comprising a step of f] electrically connecting the faceplate to the electrical interfacing device.

22. A method as claimed in claim 21 further comprising a step of g] closing the back box cavity5 with the faceplate.

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