Low-Profile Wire Connector Assembly for NEC Wire Separation
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Solution Overview
Problem
Existing electrical connectors fail to maintain the required insulation thickness and separation between low voltage and line voltage wires in electrical junction boxes, violating National Electrical Code (NEC) specifications, posing a risk of electrical hazards.
Innovation Solution
A low-profile wire connector assembly comprising a base and cover with integrated contact chambers and coupling assemblies that ensure a minimum 0.25-inch separation and equivalent insulation thickness between low and line voltage conductors, using insulating materials and structural features to secure and connect wires safely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If low voltage wires are run in the same conduit as line voltage wires to save cost, then installation cost is reduced, but electrical safety is compromised due to potential electricity jumping between wires
Solution Approach 1:
The patent introduces an insulating barrier as an intermediary element between low voltage and line voltage wires. This barrier physically separates the two wire types while allowing them to coexist in the same conduit, thereby maintaining cost savings while eliminating electrical hazard risks.
Solution Approach 2:
The patent segments the conduit space by creating distinct zones for low voltage and line voltage wires using insulating barriers. This segmentation ensures that electricity from line voltage wires cannot jump to low voltage wires, while still allowing both types to run together in the same conduit.
2Ease of operation
If insulation jacket is stripped off low voltage wires for splicing in junction boxes, then wire connection is enabled, but NEC insulation thickness requirement cannot be satisfied
Solution Approach 1:
The patent applies insulating material around the stripped wire ends and connection points before the splicing is completed. This preliminary insulation application ensures that the NEC insulation thickness requirement is met from the outset, maintaining reliability while enabling wire splicing operations.
Solution Approach 2:
The patent uses insulating material as an intermediary substance that wraps around stripped wire ends and connection points. This intermediary layer restores the insulation thickness that was removed during splicing, thereby maintaining NEC compliance and electrical safety.
3Object-affected harmful factors
If minimum separation distance of 0.25 inches is maintained between low voltage and line voltage wires, then electrical safety is improved, but device complexity increases
Solution Approach 1:
The patent combines the separation function and connection function into a single integrated connector structure. The insulating barrier is built into the connector itself, maintaining the required 0.25-inch separation while providing a unified component that simplifies installation rather than increasing complexity.
Solution Approach 2:
The patent nests the insulating barrier within the connector structure, where the barrier is contained within or integrated into the connector housing. This nesting approach maintains the required separation distance while keeping the overall device compact and manageable.
4Reliability
If equivalent insulation thickness is provided for low voltage wires as line voltage wires, then NEC compliance is achieved, but wire diameter increases
Solution Approach 1:
The patent applies insulating material locally only at critical points where low voltage wires are exposed or stripped, rather than increasing the insulation thickness along the entire wire length. This localized insulation approach achieves NEC compliance at connection points without unnecessarily increasing overall wire diameter.
Data Source
AI summary
The present disclosure provides descriptions of configurations for wire connectors used to splice low voltage electrical conductors or to splice high voltage electrical conductors. The wire connectors may be coupled to form a wire connector assembly. Each wire connector includes a base, a cover, a first cover coupling assembly and a second first cover coupling assembly. The base has an upper wall and a lower wall and can be divided into a first end portion, a second end portion and a central portion between the first end portion and the second end portion. The cover has a main cover member, a first movable cover member movably connected to a first side of the main cover member and a second movable cover member movably connected to a second side of the main cover member. The main cover member includes a plurality of contact chambers, where each contact chamber includes at least one electrical contact positioned within a cavity of the contact chamber. The first cover coupling assembly is associated with the first end portion of the base and the first movable cover member of the cover. The second cover coupling assembly is associated with the second end portion of the base and the second movable cover member of the cover. The cover assemblies are used to releasably couple the movable cover members to the base.