GFCI from a GFCI?

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Re: GFCI from a GFCI?

wiered, UL seems to think the TEST button is a valid test of the entire GFCI. From the UL website:

To properly test GFCI receptacles in your home:

Push the "Reset" button located on the GFCI receptacle, first to assure normal GFCI operation.

Plug a nightlight (with an "ON/OFF" switch) or other product (such as a lamp) into the GFCI receptacle and turn the product "ON."

Push the "Test" button located on the GFCI receptacle. The nightlight or other product should go "OFF."

Push the "Reset" button, again. The light or other product should go "ON" again.
 
Re: GFCI from a GFCI?

Jim,
I agree that everyone has always said that the button is a test button. I was surprised when the Leviton tech told me otherwise. I think that it may be a "lawyer" issue. The button only tells us that the device will trip, but not that it will trip within the required range.
Don
 
Re: GFCI from a GFCI?

Don, it maybe that Leviton guy has an issue with it based on a specific product. The link to the Leviton Smart GFCI says that unlike other devices it is tested by the RESET button instead.

UL standards say the TEST button must test the GFCI. They do not say it must be tested at 4-6mA.
The UL standard for Class A GFCIs has a specific formula for determing the tripping time of a device at currents above 6mA.

T= (20/I)^1.43
where T is time in seconds and I is the ground-fault current in milliamperes.
 
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