GFCI operation

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Electron_Sam78

Electron_Sam78

Senior Member
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Palm Bay, FL
Hey everyone,
I was taught in a class that if you put a GFCI receptacle in a circuit that is downstream, on the load side of another GFCI that they will cancel each other out and not function properly. Anyone heard this before or was this guy off base?
 
Electron_Sam78 said:
Hey everyone,
I was taught in a class that if you put a GFCI receptacle in a circuit that is downstream, on the load side of another GFCI that they will cancel each other out and not function properly. Anyone heard this before or was this guy off base?
Click to expand...


:grin: :grin: If you understand how a GFCI works you know this is simply not true.
 
Electron_Sam78 said:
Hey everyone,
I was taught in a class that if you put a GFCI receptacle in a circuit that is downstream, on the load side of another GFCI that they will cancel each other out and not function properly. Anyone heard this before or was this guy off base?
Click to expand...
GFI's only work when installed in odd numbers...If there are two on the ckt just add a third and your good to go
 
I'd always questioned that but never got any feedback from anyone else about it. It was in an 1999 NEC class taught by a former electrician turned code expert.
 
peter d said:
Yeah, that makes me wonder what else was taught in this class.
Click to expand...

He also taught:
  • If you look down a well casing on halloween with the motor running, you'll see a ghost...........
  • Never leave an electric rocking chair unattended while on a porch or there'll be a lightning storm..........
  • :D
 
Electron_Sam78 said:
Hey everyone,
I was taught in a class that if you put a GFCI receptacle in a circuit that is downstream, on the load side of another GFCI that they will cancel each other out and not function properly. Anyone heard this before or was this guy off base?
Click to expand...

There was a time (back when I was a wee itty bitty lektershuh) that if you had a GFI receptacle, and plugged in a couple hundred feet of extension cord and put a GFI cord on the end, you stood a 99% chance one of them would trip for no good reason.
 
Electron_Sam78 said:
Hey everyone,
I was taught in a class that if you put a GFCI receptacle in a circuit that is downstream, on the load side of another GFCI that they will cancel each other out and not function properly. Anyone heard this before or was this guy off base?
Click to expand...

not true... but it can be painful getting them reset, especially if there are more than 2 wired this way. :grin:
 
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