Disco & Protection

[Alwayslearningelec]

Have to provide GFCI protection for loads being fed from a disconnect switch. We have no breakers, only disconnect switches.
So since we cant install GFCI breakers how could be provide GFCI protection in this disconnect switch scenario.
We do have one main breaker at the source feeding all the disconnects. Would making that GFCI offer GFCI protection downstream? Thanks

 

[augie47]

What amperage are the disconnects ?

 

[Jraef]

Bender makes a GFCI that is tied to a contactor as the disconnect means for up to 100A. Be prepared for a major financial investment though.

 

[Alwayslearningelec]

What amperage are the disconnects ?

different sizes. 800, 400, 60 and 30A?

 

[augie47]

I think you are dealing with some bad input.
It's a rare situation where you need GFCI protection above 60 amps GFCI protection other than receptacles & breakers is very expensive.

 

[Alwayslearningelec]

I think you are dealing with some bad input.
It's a rare situation where you need GFCI protection above 60 amps GFCI protection other than receptacles & breakers is very expensive.

One scenario. I have 400Abreaker feeding 400A disconnect feeding multiple 30A disconnects via taps. The loads being fed from the 30A disconnects need to be GFCI protected.

 

[david luchini]

One scenario. I have 400Abreaker feeding 400A disconnect feeding multiple 30A disconnects via taps. The loads being fed from the 30A disconnects need to be GFCI protected.

Use a panelboard instead of multiple taps.

 

[wwhitney]

One scenario. I have 400Abreaker feeding 400A disconnect feeding multiple 30A disconnects via taps. The loads being fed from the 30A disconnects need to be GFCI protected.

Surely it would better in that scenario to use multiple 30A "spa" disconnects that incorporate GFCI. Or what David said (which could be in lieu of disconnects if the disconnects can all be together, or in addition to disconnects if the disconnects need to be spread out spatially).

Cheers, Wayne

 

[Alwayslearningelec]

Use a panelboard instead of multiple taps.

We can't due to lead times.

 

[Alwayslearningelec]

Surely it would better in that scenario to use multiple 30A "spa" disconnects that incorporate GFCI. Or what David said (which could be in lieu of disconnects if the disconnects can all be together, or in addition to disconnects if the disconnects need to be spread out spatially).

Cheers, Wayne

What do you mean by "use multiple 30A "spa" disconnects that incorporate GFCI."?

 

[wwhitney]

What do you mean by "use multiple 30A "spa" disconnects that incorporate GFCI."?

I was referring to making your 30A disconnects something like this:

Square D Homeline 50 Amp 2-Space 4-Circuit Spa Panel Main Lug Load Center HOME250SPA - The Home Depot

The Square D Homeline pack includes a 50 Amp Homeline Outdoor Metallic Load Center and an installed Square D Homeline breaker - HOM250GFI. Along with many other features and benefits, the Square D HOM250GFI

www.homedepot.com

Where you replace the 50A GFCI breaker with a 30A GFCI breaker.

Unless the voltage level is higher than 120/240V?

Cheers, Wayne