If Chapter 9 is the last place you think to look when designing a new electrical system, you’re really missing the mark, because the data in this section of the NEC is the key to determining proper ...
1. What size rigid metal conduit (RMC) is required to enclose 18 No. 10 THWN copper conductors? (a) 3/4 in. (b) 1 in. (c) 1 1/4 in. (d) 1½ in. 2. What size electrical metallic tubing (EMT) is required ...
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