Yesterdays inspection was on a 200+ year old home. House has combo of both 2 and 3 wire electric. I found 2 outlets that were GFCI, both did not have grounds (upgrades from 2-prong which by “code” is acceptable from my understanding).
They tested properly per the test and reset buttons which would indicate they are acceptable per the manufacturer, but when using my tester, they would not trip.
Is it acceptable if it tests properly using the device test buttons? and if so, how can it be acceptable if it will not trip with an outside source?