Branch Circuits & WiringQuestion 152 of 521
In a dwelling unit, the voltage between conductors supplying lampholders, luminaires, and 15- and 20-ampere receptacles must not exceed what value?
a.120 V
b.208 V
c.240 V
d.277 V
Explanation
Section 210.6(A) limits circuits supplying lampholders and standard 15- and 20-A receptacles in dwellings to 120 V between conductors. Higher voltages such as 208, 240, and 277 V are permitted only for specific equipment and larger circuits, not general dwelling lighting and receptacle circuits.
Law Reference: 2023 NEC §210.6(A)Practice all 521 questions free — no signup required.
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