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#96896 - 01/04/06 04:33 PM Furnace branch circuit
Micmann Offline

Registered: 04/22/05
Posts: 20
I’m wiring some heating equipment in a commercial building. They are two small gas hot air furnaces with A/C coils. The only draw about 2 amps each and then a little more with condensate pumps. Does 422.12 mean I can share a branch circuit for both or that they each need their own branch circuit?


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#96897 - 01/04/06 04:57 PM Re: Furnace branch circuit
ShockMe77 Offline

Registered: 06/11/05
Posts: 823
Loc: Rahway, New Jersey
Exception #2 in that article says to me that it is permissable to do it that way. But why leave it to chance? If it were me I would run (2) 15 amp dedicated branch circuits, one to each unit so if one stops working -- 20 years from now -- the other one will be working, and the customer won't be left without at least some heat, or A/C.

[This message has been edited by ShockMe77 (edited 01-04-2006).]

#96898 - 01/04/06 06:19 PM Re: Furnace branch circuit
DougW Offline

Registered: 06/08/03
Posts: 1083
Loc: North Chicago, IL
Or at least ensure that there are two separate disconnects, so you can "drop" one for service and not freeze the occupancy.

#96899 - 01/04/06 06:53 PM Re: Furnace branch circuit
gfretwell Offline


Registered: 07/20/04
Posts: 9023
Loc: Estero,Fl,usa
I agree with Doug. I don't see a problem sharing the circuit but they should have separate disconnects.
Greg Fretwell


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