20a gfci on 15a circuit, no T


  #1  
Old 11-07-17, 07:20 PM
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20a gfci on 15a circuit, no T

I need to relaxed a bathroom gfci on a 15a circuit. I have a spare gfci but it says it's rated for 20a. However, it just has flat receptacle pins, not a T like a normal 20a plug.
is it ok to install this?
Because it's missing a T receptacle, you could never plug a 20a device into it but even if you could, the breaker would trip?
 
  #2  
Old 11-07-17, 09:58 PM
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Canadian rules are a bit different. In the US a bathroom circuit feeding a receptacle has to be 20amp.

A 15amp receptacle and GFCI is normally rated 20amp feed-through. That's probably what you are seeing.
 
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Old 11-08-17, 01:23 AM
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I think it's new renovated bathrooms.
this is existing wiring, the building is 100 years old,
Bathroom maybe renovated in 1970 when 15a was the norm, so it's grandfathered in.
 
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Old 11-08-17, 06:43 AM
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The 15 amp branch circuit breaker would not (should not) trip unless the total power drawn by all lights and appliances on that circuit exceeded 15 amperes.

A 15 amp ground fault circuit interrupter receptacle unit might not trip if the total power drawn through its receptacles and other receptacles daisy chained through it (pass-through) exceeded 15 amps or even 20 amps.

Thus a GFCI unit is not for overcurrent protection unless it is specifically described, listed, or advertised as such e.g. is a GFCI panel breaker.
 
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Old 11-08-17, 07:11 PM
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So no problem connecting the 20a gfci then?
if it was a true 20a it would have the t slot on the receptacle.
 
 

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