Branch Circuits & WiringQuestion 144 of 521
Expansion fittings for rigid PVC conduit must be provided to compensate for thermal expansion and contraction where the length change is expected to be at least how much?
a.1/4 in
b.1/2 in
c.1 in
d.2 in
Explanation
Section 352.44 requires expansion fittings where the length change of PVC due to temperature is expected to be 1/4 in or greater. PVC expands and contracts significantly with temperature. 1/2 in, 1 in, and 2 in are all beyond the 1/4-in threshold that triggers the fitting.
Law Reference: 2023 NEC §352.44Practice all 521 questions free — no signup required.
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