DUKE UNIVERSITY CONSTRUCTION STANDARDS 1
All service entrances shall be solidly grounded using a grounding electrode system connection between ground rods, building steel and metallic cold-water piping.
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Bond all conduits entering primary switchgear, main breaker panel, and secondary service entrance switchboard / panelboard with a ground wire connecting the grounding type bushings to the equipment ground bar. However, exposure to weather, frequent relocation, rough use and other condi-tions not normally encountered with conventional wiring systems necessitate special consideration not require in other applications or in completed structures. Today, we're diving deep into the world of distribution box grounding, breaking down the standards. Whether in a home or an industrial facility, this box keeps your electrical setup organized, functional, and efficient. The conductors and equipment for delivering elec-tric energy from the serving utility to the wiring system of the premises served.
The construction site s electrical distribution box lacks a ground wire
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