Sizing ConduitsChapter 9 Choose the best answer: 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) 1 in. 2. What size electrical metallic tubing (EMT) is required to enclose two No. 6 THWN copper conductors, two No. 8 THWN copper conductors, and four No. 10 THWN copper conductors? (a) 1 in. (b) 1 1/4 in. (c) 1 1/2
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