bath fan

[jxofaltrds]

Wayne. Got it.

Elecmen. Your only choice is two 12-3wg. 300.3(A) for my reasoning.
PS make sure you use a 22.5CU IN min. box if a single gang.

 

[elecmen]

Yeah, Thanks guys. 2 12/3's and use both neutrals and tie them together in the switch box.

 

[acrwc10]

Yeah, Thanks guys. 2 12/3's and use both neutrals and tie them together in the switch box.

Just keep the neutrals separate at the fan, not a big deal in this case but you never want parallel paths back to the source.

 

[George Stolz]

If you run nm cable, it is not necessary to run the neutral in both cables however it will create emf's.

It shouldn't create much, if the cables are secured together. Since they start and end in the same place it should behave electrically as one cable, IMO.

 

[Dennis Alwon]

It shouldn't create much, if the cables are secured together. Since they start and end in the same place it should behave electrically as one cable, IMO.

Yes, true but most people won't necessarily do that.