Ok, here is a weird one. I just had my newest sure tester show a lack of ground on a GFCI circuit today. Every outlet in the garage and exterior on this circuit lacked an equipment ground but still tripped with the meter. Then I tried my backup 3 bulb and it showed it as OK and grounded. Odd… then the interior GFCI’s all checked normal. Went back out to check again and still…open ground on that circuit. Took off the cover plate and saw the ground and even checked it with the multimeter. All OK.
Anyone else ever had this happen? I can’t seem to find a reason for it and have tested many GFCI’s since without incidence.
If it was a fluke with the tester I would have thought it would not repeat itself on the garage GFCI and on the other protected outlets in that circuit.