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Sizing the equipment grounding conductor using NEC Table 250.122.
All metal parts supplied by a feeder or branch circuit must be connected to an equipment grounding conductor (EGC) of a type described in NEC 250.118. The EGC is not required to be of the 'wire-type,' but when it is, it must be sized in accordance with 250.122. Care must be taken when using Table 250.122 to size the EGC of the wire-type. For ...
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