I have replaced a traditional breaker with dual function AFCI / GFCI breaker hoping to make the outlets up to code (3 prongs with no ground). However, when testing with GFCI tester, outlets with no ground do not trip the breaker (not expected). There is 1 outlet which has its ground connected to water pipe would trip during test (expected). All outlets source from the same breaker.
Any ideas?
Best Answer
GFCI plug in testers with a trip button won't work without some ground connection. When the test button is depressed it is basically a high resistance leak to the ground pin, with no ground wire connected the test fails.
Specifically this type of device:
Additionally: If the outlet is GFCI protected but has no ground it should be marked "GFCI protected No Equipment Ground" with the stickers that came with the device.