2-pole ckt

[j rae]

If comeing off a 2-pole breaker would consider that 1 or 2 ckts. Would mater if you ran a neutral with the wires??

 

[Pierre C Belarge]

For the purpose of counting the number of breakers permitted in an enclosure, one counts each breaker (including each leg of a 2 or 3-pole breaker) as a breaker.

For the purpose of a counting circuits, a 2-pole breaker counts as 1 circuit.

 

[charlie b]

What matters is the connection(s) at the other end. If the two phase wires, with or without a neutral wire, provide power to a single 240 volt component, or to two or more 240 volt components, or to one or more components that each use both 240 and 120 volts (such as ranges), then I would call it a single circuit. If you do run a neutral, and if the three wires provide power to a collection of 120 volt components, some fed from phase A and others from phase B, then it is still one single circuit, but it is a multi-wire branch circuit. I think the only way to call this arrangement "two circuits" would be to run two neutral wires, and to keep the loads on each phase separate from the loads on the other phase.

 

[infinity]

I would call a MWBC connected to a 2-pole CB feeding separate loads 2 circuits.

 

[480sparky]

........Would mater if you ran a neutral with the wires??

Yes. If what you're energizing needs a neutral, then you need to install one with the ungrounded conductors. 300.3(B) .

 

[charlie b]

I would call a MWBC connected to a 2-pole CB feeding separate loads 2 circuits.

I wouldn't. Have a look at the article 100 definition of MWBC. It is written in the singular.

 

[infinity]

Customer pays for 2-20 amp circuits, I run a 12/3 cable, he still gets his two circuits.

 

[don_resqcapt19]

210.4 Multiwire Branch Circuits.
(A) General. Branch circuits recognized by this article shall be permitted as multiwire circuits. A multiwire circuit shall be permitted to be considered as multiple circuits. All conductors of a multiwire branch circuit shall originate from the same panelboard or similar distribution equipment.