Updating 2 prong electrical outlets
Suppose you have two distinct grounds -- the electrical system ground, and a bit of plumbing -- and they actually physically go to ground at opposite ends of the building, and they are grounded in dry, sandy soil.In environments like kitchens and bathrooms where there is likely to be a combination of water and electricity, the best practice is to have both a safety ground and a GFCI-protected circuit.Remember that a correctly-wired GFCI provides ground fault protection to every outlet "downstream" of it, that is, every outlet hooked up via the LOAD terminals.I don't know too much about replacing outlets, only what I've read online or through You Tube videos. Some outlets have been replaced (brand new kitchen) but some are still the old 2 prong.
I bought a receptacle tester and tested the newer style outlets, which all tested as correct wiring.
The third wrong way -- connect the safety ground to the neutral -- is wrong but why is a bit subtle.
Updating 2 prong electrical outlets comments