Extender Grounding Strap for Reliable Electrical Connection
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Solution Overview
Problem
Existing electrical box extenders used in renovated walls or those installed too deep in a wall often lack a reliable grounding mechanism, as they are not required to be grounded by electrical codes and rely on unreliable contact with the outlet box for electrical connection.
Innovation Solution
An electrical box extender with a bendable grounding strap made from conductive metal, which can be formed into various shapes to fit different outlet boxes and includes a connector for secure attachment to the outlet box, providing a reliable electrical ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an extender is attached to an electrical box to modify wall thickness, then the extender fits the new wall surface, but the extender lacks a reliable grounding mechanism
Solution Approach 1:
The grounding strap is segmented into multiple sections that can be independently bent and positioned, allowing the extender to adapt to different wall configurations while maintaining reliable grounding connection to the electrical box
Solution Approach 2:
The grounding strap acts as an intermediary element between the extender and the electrical box, providing a dedicated grounding path that mediates the electrical connection and ensures safety without compromising the extender's adaptability
2Device complexity
If the extender relies on wall contact for electrical connection, then the structure is simple, but the electrical connection is unreliable
Solution Approach 1:
The grounding function is extracted from the wall contact mechanism and implemented through a dedicated grounding strap, separating the structural support function from the electrical grounding function to ensure reliable connection
Solution Approach 2:
The grounding strap serves multiple functions: it provides electrical grounding, acts as a mounting bracket for securing the extender, and can be configured to reach different connection points on the electrical box, making the solution universally applicable
3Ease of manufacture
If electrical codes do not require extender grounding, then manufacturing is simpler, but safety is compromised
Solution Approach 1:
The grounding strap is pre-formed with bendable sections and connector positioning features during manufacturing, allowing installers to easily configure the grounding connection without complex fabrication steps, thus maintaining ease of manufacture while ensuring safety
Solution Approach 2:
The grounding strap is made from inexpensive metal that can be easily formed and configured, providing a cost-effective safety solution that does not complicate the manufacturing process while addressing the harmful lack of grounding
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures a permanent and reliable electrical ground for the extender, enhancing safety by preventing user injury from unshielded wires and allowing the extender to be securely attached to the outlet box, even in cases where apertures are not available, thus meeting safety standards.
Implementation Method 1
an integral bendable grounding strap connected to the wall section, which extends from the wall section and has a remote end... providing a reliable electrical ground
Data Source
AI summary
An electrical box extender with a grounding strap which includes an extender having a perimeter wall section and an integral bendable grounding strap connected to the wall section, wherein the grounding strap extends from the wall section and has a remote end that includes a spade or lug connector for attaching to a ground.