Branch Circuits & WiringQuestion 225 of 521
Per 320.30, Type AC cable must be secured and supported at intervals not exceeding what distance?
a.4-1/2 ft (1.4 m)
b.6 ft (1.8 m)
c.3 ft (900 mm)
d.10 ft (3.0 m)
Explanation
Section 320.30 requires AC cable to be secured at intervals not exceeding 4-1/2 ft, and within 12 in of every box or fitting. 6 ft is the MC interval; 3 ft and 10 ft are not AC support values.
Law Reference: 2023 NEC §320.30Practice all 521 questions free — no signup required.
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