This answer is based on the 2017 NEC. A. Separate raceways or cables containing parallel conductors must have the same electrical characteristics [310.10(H)(3)], as shown in the Figure. If one set of ...
A. To prevent unbalanced current in the parallel conductors due to inductive reactance, all circuit conductors of a parallel set [Sec. 310.10(H)] must be bundled together and secured to prevent ...
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