Meter Enclosure Grounding Substrate with Lug Conductors
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Solution Overview
Problem
Existing grounding systems for meter enclosures are inefficient, as they often damage the enclosure's paint, require multiple kit sizes due to varying sizes of meter socket boxes, and do not meet the requirements of the 2008 National Electric Code (NEC) Section 250.94 for intersystem bonding termination.
Innovation Solution
A grounding apparatus with a substrate and an elongated conductive member featuring lugs and apertures for secure electrical and mechanical engagement of grounding conductors, designed for easy mounting on meter enclosures, ensuring compliance with NEC 250.94 by providing a common point for intersystem bonding and grounding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a grounding kit is clamped directly onto a meter socket box, then grounding connection is achieved, but the paint on the meter socket box is damaged and sealant is required to prevent rusting
Solution Approach 1:
The patent introduces a grounding apparatus with a mounting substrate that serves as an intermediary between the grounding kit and the meter socket box. The substrate is mounted to the exterior surface of the meter socket box using fasteners, and the grounding conductors are then connected to the substrate. This intermediary approach prevents direct contact between the clamping mechanism and the meter socket box, thereby avoiding paint damage and eliminating the need for sealant to prevent rusting.
2Adaptability or versatility
If multiple different kit sizes are stocked to accommodate various meter socket box sizes, then compatibility is improved, but device complexity and inventory requirements increase
Solution Approach 1:
The grounding apparatus is designed with a universal mounting substrate that can be adapted to different sizes and configurations of meter socket boxes. The substrate includes multiple mounting locations and configurable grounding conductor connections, allowing a single apparatus design to serve multiple applications. This universal design eliminates the need to stock multiple different kit sizes while maintaining compatibility with various meter socket box dimensions.
3Reliability
If grounding conductors are connected using traditional methods, then electrical engagement is achieved, but mechanical security and compliance with NEC 250.94 may be compromised
Solution Approach 1:
The grounding apparatus segments the grounding connection into distinct functional components: a mounting substrate for mechanical attachment to the meter socket box, an elongated conductive member for electrical connection, and multiple lugs for securing grounding conductors. Each component is optimized for its specific function, with the lugs providing positive mechanical engagement and electrical contact. This segmented design ensures compliance with NEC 250.94 by providing a dedicated intersystem bonding termination that clearly separates mounting and electrical connection functions.
Data Source
AI summary
The invention includes a grounding system which includes a grounding apparatus, a first ground conductor and a plurality of second ground conductors. The grounding apparatus includes a substrate and an elongated conductive member. The substrate has formed therein an aperture for receiving and electrically and mechanically engaging the first ground conductor. The elongated conductive member is mounted to a surface of the substrate and includes a plurality of lugs structured to receive and electrically and mechanically engage the plurality of second ground conductors. The substrate is structured for mounting to an exterior surface of a meter enclosure.