hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Ok I guess I have never thought of using a GFCI as a shunt trip for receptacles under a cooking hood in a commercial kitchen, but this is what I found today when called to trouble shoot a power outage for these same receptacles.
Not sure who thought of this or wired it this way but it does work, heres how I found it, two sets of multi-wire circuits feeding 4 duplex receptacles from two 20 amp two pole GFCI breakers in the panel, in the kitchen a white #12 THHN conductor ran from one each of the receptacles so that one receptacle from each GFCI breaker had this neutral wire connected to it's neutral, these two whites ran in EMT to the Ansel system micro switch box, which had two micro switch's in it, each neutral went to the NO. terminal on each and a green jumped to each common terminal and was bonded to the box.
Now I think there has got to be something in the code that wouldn't allow this yes it works simply because as soon as the neutral is grounded the GFCI trips, but I can't even put my finger on it as I have never seen any requirement for a listed way to shut off the power under a hood, we use shunt trips, contactor's, and never are they listed for this purpose, is this a possibly way to do this? not that I would:ashamed1:
Talk about being creative.
Not sure who thought of this or wired it this way but it does work, heres how I found it, two sets of multi-wire circuits feeding 4 duplex receptacles from two 20 amp two pole GFCI breakers in the panel, in the kitchen a white #12 THHN conductor ran from one each of the receptacles so that one receptacle from each GFCI breaker had this neutral wire connected to it's neutral, these two whites ran in EMT to the Ansel system micro switch box, which had two micro switch's in it, each neutral went to the NO. terminal on each and a green jumped to each common terminal and was bonded to the box.
Now I think there has got to be something in the code that wouldn't allow this yes it works simply because as soon as the neutral is grounded the GFCI trips, but I can't even put my finger on it as I have never seen any requirement for a listed way to shut off the power under a hood, we use shunt trips, contactor's, and never are they listed for this purpose, is this a possibly way to do this? not that I would:ashamed1:
Talk about being creative.