480 and 24 In the same pipe.

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JeffKiper

Electrical geek
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Controls guy
I have a question I can't find an answer to. Can I run 24vdc and 480 VAC in the same conduit? Old school thinking is no. I am lookig at motor local disconnects with aux switches for my vfd enable circuit. I understand making sure the insulation is rated at the highest voltage potential typically we use 480VAC so 600 v rated insulation applies.*

Does anybody know where it is either allowed or disallowed?
 
It depends on the class wiring of the low voltage. Look at 300.3(C) & look at the informational not for 725.136(A)
 
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