Services & DistributionQuestion 79 of 521
Under the 2023 NEC, the maximum number of overcurrent devices permitted in a lighting and appliance branch-circuit panelboard is:
a.30
b.42
c.60
d.Not limited to a fixed number; governed by the panelboard's listing
Explanation
The former 42-circuit limit was removed; per 408.54 a panelboard must not have more overcurrent devices than the number for which it is designed, rated, and listed. There is no universal fixed cap such as 30 or 42; the manufacturer's listing controls.
Law Reference: 2023 NEC §408.54Practice all 521 questions free — no signup required.
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