How often do you test your GFCI? My what!? Yeah, that’s the problem…. and why UL changed things.
Starting June 29, 2015 Underwriters Laboratories (UL) has announced a revision to standard UL 943.
This revision requires that all UL certified Class A residential and commercial grade box-mounted GFCI have:
a) An auto-monitoring function that will allow for periodic automatic testing (self-test) of the GFCI device and its ability to respond to a ground fault. If a problem is detected the GFCI will disconnect power to anything connected to it or indicate that there is a problem using visual or audible means.
b) Provisions to ensure that receptacle type GFCIs that contain separate line and load terminals, and that is powered through its load terminals, shall not reset and supply power to its receptacle face or line terminals if miswired. This applies both during its initial installation and after reinstallation following a correctly wired installation. If the device is provided with special instructions for removal and reinstallation, the instructions shall be followed during testing.
Why Do We Need A Revision?
Do I Have To Change All My Receptacles?
- The GFCI is miswired due to reversal of the line and load leads
- There is no power being supplied to the GFCI
- The GFCI cannot pass its internal test
The Leviton SmarTest GFCI also feature:
- Terminals withstand high torque
- Back and side wire capable (External back wire clamp)
- Tamper-Resistant shutters
- Dual Function Indicator Light
- Standard self-ground clip
The Leviton SmartLockPro Self Test GFCI is available at a variety of resellers as well as Amazon.
Likely you do not have the Leviton SmarTest GFCI in your home so Leviton has produced this great video to help you know how to test a GFCI: