I am in WA using the 2014 NEC Code, and it says "all" circuits in a detached garage/shop require GFI protection, and my local inspector said any circuit with a light or receptacle requires a GFI (I forgot to address a furnace circuit that has NO outlets/receptacles associated with it), and any outdoor fixture must be wired on its OWN GFI circuit (cannot be wired to an indoor circuit that is GFI protected).
My inspector says "just follow the code and you will be fine," and pretty much left it at that, but after reading the code, I am not sure-
The other circuits I am wiring will use receptacle type GFIs at the head of each branch, but if I need one for the furnace, I guess it needs be a breaker panel mounted one since no outlets are allowed on a dedicated furnace circuit?
But I cannot find anything about dedicated furnace curcuits/GFIs where the ONLY thing on the branch is the furnace and the furnace is fed by a whip connection.
In fact some online threads at other forums say do NOT GFI a furnace since nuisance trips cause loss of heat. One post said it was permissible to have a furnace on a GFI'd circuit, but he was installing a new furnace on an existing branch circuit w/ receptacles/outlets.
The shop is on residential land, but it is a commercial grade shop (not just a detached garage), so not sure where I fall. I did a search here, and a hydronic heater was referenced re: GFI, but no hits on Furnace/GFI.
Anyone have a definitive answer?
Thanks,
Bob
My inspector says "just follow the code and you will be fine," and pretty much left it at that, but after reading the code, I am not sure-
The other circuits I am wiring will use receptacle type GFIs at the head of each branch, but if I need one for the furnace, I guess it needs be a breaker panel mounted one since no outlets are allowed on a dedicated furnace circuit?
But I cannot find anything about dedicated furnace curcuits/GFIs where the ONLY thing on the branch is the furnace and the furnace is fed by a whip connection.
In fact some online threads at other forums say do NOT GFI a furnace since nuisance trips cause loss of heat. One post said it was permissible to have a furnace on a GFI'd circuit, but he was installing a new furnace on an existing branch circuit w/ receptacles/outlets.
The shop is on residential land, but it is a commercial grade shop (not just a detached garage), so not sure where I fall. I did a search here, and a hydronic heater was referenced re: GFI, but no hits on Furnace/GFI.
Anyone have a definitive answer?
Thanks,
Bob
