Hi,

I need to run two receptacle circuits: one 20A 230V and one 20A 115V. I was wondering if I can use one pole/hot on a double pole breaker to supply the 115V while also using it to supply the second part of the 230V. This would allow me to use one double-pole breaker and run a 12/3 to supply both circuits.

I understand this will increase the load on the one pole and may trigger the breaker if I use both the 230V and the 115V at the same time, but is this legit? An alternative is to simply run a double0-pole 12/3 for the 230V and single-pole 12/2 for the 115V.

Thanks,

Steve

Do your alternative plan.

To answer your question... NO that is not ligit. NEC 210.4(C) states a multiwire branch circuit shall supply only line-to-neutral loads. Exception #1 states that a multiwire branch circuit can supply ony one utilization equipment. Exception #2 requires all ungrounded conductors to be opened simultaneously by the branch circuit device.

Your circuit requirements will supply two utilization equipment loads

Thanks for the info.