I have found three receptacles in my home for which a three-light receptacle tester indicates open ground. Can I safely resolve this issue by replacing these receptacles with GFCI receptacles? Would that be up to code?
Given the placement of these three, I suspect that they are in a row on the circuit. If this turns out to be true, can I just use one GFCI receptacle at the box closest to the breaker, and then pass power to the other two on the load side of the GFCI?
In case it matters, this is in Chicagoland, so ground is provided by conduit throughout the home.