Workshop Sub-Panel Electrical (NEC) related question

[Charlie Velasquez]

Thanks for all the feedback,

If I use 1 inch sch 80, can I run a 120 circuit and 240 circuit in the same conduit? I wanted to T off at the end and have the two outlets near each other. It would be 12 awg thhn for the 120 and 10 awg for the 240.

Yes. At about 16% fill. Max for 3 or more conductors is 40%.

3/4” conduit would be a 26% fill.

https://www.southwire.com/calculator-conduit

[PHILIP MACHIN]

Yes. At about 16% fill. Max for 3 or more conductors is 40%.

3/4” conduit would be a 26% fill.

https://www.southwire.com/calculator-conduit

Thanks for the link to the calculator.

[Mike Cutler]

Yea, I read a post where someone was claiming the bare ground in NM wasn’t sufficient to ground the sub panel. Sounded like BS but I wanted to ask to make sure.

Nuke EMC(SS), now a Power Grid Transmission operator.

This would depend on the context in which "ground" was being discussed, and which code requirements would be applicable. Is the "box being grounded", or is the "ground being carried".
If it were a remote subpanel, in a separate building, or structure, the grounding requirements are much different.

I don't think you'll have any problems Chief. Ship's wiring was a lot more complicated than a residential dwelling.

Former MT2(SS).