240-volt GFCI?

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drcampbell

Senior Member
Location
The Motor City, Michigan USA
Occupation
Registered Professional Engineer
Is there a dead-front GFCI available that will work at 240 volts?

The proposed application is a 240-volt-only, 2-wire load in an older house where installing one in the fusebox is not an option.

dead-front-gfci.jpg
 

JFletcher

Senior Member
Location
Williamsburg, VA
Is there a dead-front GFCI available that will work at 240 volts?

The proposed application is a 240-volt-only, 2-wire load in an older house where installing one in the fusebox is not an option.

View attachment 14803

Just removed one of these this past week. Are you sure it's 240V only? Some can be wired 120V as well, if you really want to GFCI protect it. If it is 240V only as you say, then as Little Bill wrote it doesnt have to get GFCI protected.
 

kwired

Electron manager
Location
NE Nebraska
I think OP wants to GFCI protect it because it doesn't have an equipment grounding conductor.

I don't think that necessarily meets NEC, but is better idea then leaving it as is IMO.

How hard will it be to get an EGC to the appliance, that would likely be higher on my agenda then using a GFCI in most instances.
 

drcampbell

Senior Member
Location
The Motor City, Michigan USA
Occupation
Registered Professional Engineer
Why are you concerned about an existing installation?
Is there an EG to the heater?

Nervous and highly-attentive new homeowner. Trying to make everybody happy.
There's a full-size grounding wire, which my ohmmeter says is connected to something ground-ish. Don't have a 4-wire ohmmeter or high-current ground-integrity tester.
 
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