All questions and answers are based on the 2011 NEC. Q. What are the NEC rules for securing and supporting raceways? Specifically compare EMT, FMC, and PVC. A. Electrical metallic tubing (EMT) must be installed as a complete system in accordance with 300.18 [300.10 and 300.12], and it must be securely fastened in place and supported in accordance with 358.30(A) and (B). In other words, EMT must generally be securely fastened within 3 ft of every box, cabinet, or termination fitting — ...
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