Services & DistributionQuestion 74 of 521
In general, conductors may be connected in parallel (electrically joined at both ends) only where the individual conductors are:
a.2 AWG and larger
b.4 AWG and larger
c.1/0 AWG and larger
d.250 kcmil and larger
Explanation
Per 310.10(G), paralleling of ungrounded and grounded conductors is generally permitted only in sizes 1/0 AWG and larger. The smaller sizes are not allowed under the general rule, and requiring 250 kcmil would be more restrictive than the code.
Law Reference: 2023 NEC §310.10(G)Practice all 521 questions free — no signup required.
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