Branch Circuits & WiringQuestion 191 of 521
Per Chapter 9, Table 1, what is the maximum permitted fill percentage when exactly two conductors are installed in a conduit?
a.40%
b.53%
c.31%
d.25%
Explanation
Table 1 sets a 31% fill limit for exactly two conductors, reflecting the jamming ratio concern. 40% applies to three or more, 53% to a single conductor, and 25% is not used.
Law Reference: 2023 NEC Chapter 9, Table 1Practice all 521 questions free — no signup required.
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