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Minimum Size Allowed for Fixture Wire?

The smallest size fixture wire permitted by the NEC is _____ AWG.

a) 22
b) 20
c) 18
d) 16

See answer and applicable Code reference

The correct answer is: c) 18

Article 402 covers general requirements and constructions specifications for fixture wires. As noted in Sec. 402.6, "Fixture wires shall not be smaller than 18 AWG."

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