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Wednesday, February 12, 2020
Question:
Can I install 120-volt circuits in the same conduit with 480-volt circuits?
Mark Hamer
A
Answer:
Hi Mark, we get this question a lot.
Yes, you can install these circuits together in the same conduit. Section 300.3(C)(1) indicates that all conductors shall have an insulation rating equal to at least the maximum circuit voltage applied to any conductor within the enclosure, cable, or raceway.