20 amp gfci to a 15 amp circuit

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  #1  
Old 03-26-06, 10:37 AM
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20 amp gfci to a 15 amp circuit

I'm wanting to replace a regular outlet with a gfci out. I have a 20 amp gfci but the curcuit breaker is a 15amp breaker with 14/2 wire. Can I still use this gfci or do I need to get a 15 amp gfci? Would it be a fire hazard if I used the 20 amp gfci?
 
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Old 03-26-06, 11:51 AM
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Originally Posted by gorden2440
Can I still use this gfci?
No. Receptacles on a 15A circuit may not be over 15A per NEC 210.21(B).


> do I need to get a 15 amp gfci?
Yes.


> Would it be a fire hazard if I used the 20 amp gfci?
In theory someone could plug in a 20A load.
 
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Old 03-26-06, 11:54 AM
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If it is really a 20 amp GFCI (one slot will be the shape of a 'T'), then no. Someone could plug in a device rated for 20 amps (such as a large air conditioner) and overload the circuit.
If it is actually a 15 amp outlet (just the two parallel slots and ground), but is rated for 20 amps "feed-through" (ie.-downstream loads), then you can use it on a 15 amp circuit.
 
  #4  
Old 03-26-06, 12:52 PM
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Most GFCI receptacles are 15 amp receptacles, but rated for 20 amp pass through protection.

If the GFCI receptacle you have will accept a 20 amp plug then you need a different receptacle. otherwise you can use the receptacle, assuming you are in the US and there is no local code stipulating otherwise.
 
  #5  
Old 03-26-06, 02:22 PM
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It must be a 15 amp because it only has the two parallel slots(no t slot) but it says 20amp 125v on the side of it. Why is that?? Thanks for the info.
 
  #6  
Old 03-26-06, 03:16 PM
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Most GFCI receptacles are 15 amp receptacles, but rated for 20 amp pass through protection.
 
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