GFI receptacles on a GFI CB protected circuit

Status
Not open for further replies.
P

PAW2006

Member
Location
Upstate NY
Good morning
Anyone have any comments/code refs regarding the use of a GFI receptacle on a GFI circuit breaker protected circuit? Non-residential use
Thanks
 
"It would work, but why would you want to do this"
I don't, It was a question posed to me.

"Legal, but a poor design, IMPO"
I agree


"GFI or GFCI breaker? Big difference"
Please elaborate
 
PAW2006 said:
"GFI or GFCI breaker? Big difference"
Please elaborate
Click to expand...

There are 2 types of Ground Fault protection.

The first is ground fault circuit interrupter protection for personnel (GFCI) this type of protection has a trip threshold of 4-6 milliamps. This GFCI protection is designed to protect persons from shock hazards arising from a ground fault.

The second type of ground fault protection is ground fault protection of equipment (GFPE) this has a typical trip threshold of around 30 milliamps. This is design to protect equipment from ground faults.

Hope this helps.

Chris
 
raider1 said:
There are 2 types of Ground Fault protection.

The first is ground fault circuit interrupter protection for personnel (GFCI) this type of protection has a trip threshold of 4-6 milliamps. This GFCI protection is designed to protect persons from shock hazards arising from a ground fault.

The second type of ground fault protection is ground fault protection of equipment (GFPE) this has a typical trip threshold of around 30 milliamps. This is design to protect equipment from ground faults.

Hope this helps.

Chris
Click to expand...

And 3rd, a GFI (Ground Fault Interuptor) is an external device (Type of GFP) for equipment protection required on services 150V to 600V and rated for 1000A or more. (230.95). Or a circuit breaker with a trip unit that has a GF function.

The reasson I bring this up is that I have been in many industrial plants that think they do not need to have GFCI's (Fixed or portable) for portable electrical equipment because thier breakers have Ground Fault Protection. GFI (or GFP) are not for protecting persons from electrical shock hazards, GFCI's are.
 
Status
Not open for further replies.
Top