230 volt g.f.c.i breakers w/o a neutral

[cplinc]

Does a 2 pole g.f.c.i. breaker work when there is no neutral ,if so how? we,re installing heat tape on a metal roof and they recommend a g.f.c.i. breaker.

 

[stickboy1375]

All current flowing out to the load in one hot conductor must return through the other hot conductor if there is no ground fault. The GFCI trips when between 4-6 milliamps of ground fault current is detected.

 

[don_resqcapt19]

Did it call for a GFCI or ground fault protection for equipment? The code rule in 426.28 required ground fault protection for equipment. The reason being is with longer lengths of heat tape the leakage may exceed the 5 mA trip point of a GFCI. The equipment ground fault device has a trip point of 30 mA.
Don

 

[wireman3736]

Equipment ground fault breakers, I priced one for a homeline a couple of months ago and they quoted me $250.00, crazy

 

[LarryFine]

Does a 2 pole g.f.c.i. breaker work when there is no neutral ,if so how? we,re installing heat tape on a metal roof and they recommend a g.f.c.i. breaker.

The load need not have a neutral, but if it does, it lands on the GFCI's neutral terminal. Without one, the circuit merely acts as if there is a neutral, but there is no neutral current. Either way, the GFCI's neutral pigtail must land on the panel's neutral bus.

 

[iwire]

Does a 2 pole g.f.c.i. breaker work when there is no neutral ,if so how? we,re installing heat tape on a metal roof and they recommend a g.f.c.i. breaker.

I agree with the others.

A 2 pole GFCI can work without a neutral

But...

A GFCI on heat trace will very likely be a problem.

GFP as required in 426.28 is not the same as GFCI.

Heat trace by it's very design has leakage current which can quickly exceed the trip level of a GFCI.

 

[wwhitney]

Equipment ground fault breakers, I priced one for a homeline a couple of months ago and they quoted me $250.00, crazy

Doesn't AFCI incorporate 30ma GFP? AFCI breakers must be less than $250.

Cheers, Wayne

 

[Rich Elec.]

So, can anyone tell me what device is used to satisfy 426.28 for 120v residential snow/ice melting equipment.
I know that 210.8 (A) (3) Ex. states that a GFCI is not required, and it leads you to 426.28.
Is the AFCI the answer?

 

[wireman3736]

Doesn't AFCI incorporate 30ma GFP? AFCI breakers must be less than $250.

Cheers, Wayne

Your right on that, Sometimes my brain has a power outage.

 

[don_resqcapt19]

Is the AFCI the answer?

I don't think so. While it does provide GFP protection, it is not listed for that purpose.
Don