Note: This article is based on the 2005 NEC. The sizing requirements for pull boxes, junction boxes, handhole enclosures, and conduit bodies exist to prevent conductor insulation damage. Those ...
Explanation: A change to the 2023 NEC in Sec. 342.20 now permits a maximum size of 6 in. in-lieu of the previous maximum size of 4 in. for intermediate metal conduit. A similar change to Sec. 358.20 ...
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