I have an old house (about 60 years) and a few of my plugs are still the old
2 prong. I'm about to replace them with 3 prong outlets, and I have a question or three.What's a good and sure way to ensure I have a good ground with the conduit and boxes? I've already had an electrician repair a loose connection in the conduit where a GFCI failed to operate, and this got me to thinking that there may be more of these in this aging house.
One idea I had was running an extension cord from an outlet with a known good ground to the box I'm working on, using my multimeter to check for a solid ground connection. Of course, I'd check for voltage first, so I don't burn the thing up. Is this a reliable way to check for a good ground?
I do know this house has no Romex wiring, and all the internal wiring was done to code, at least way back when the wiring was done.
Thank you for your help.
Pagan