If you have an old system with ungrounded receptacles and want to ground one receptacle, shut off power to the circuit, test for power, and pull out the receptacle. Pry out a knockout slug and then twist it back and forth to remove it.
Make a pathway for a ground wire. Use one or two fish tapes to run a 12-gauge green-insulated wire from the box to the service panel or to a cold-water pipe.
Connect the wire to the ground screw of the receptacle. Connect the other end to a cold-water pipe (not a hot-water pipe, which does not run to ground) with a special grounding clamp.
IF YOU ARE STILL UNSURE..., CALL 415 648-0411
CODE SAYS YOU EITHER HAVE TO BRING YOUR GROUND ALL THE WAY TO THE PANEL OR TO A CENTRAL GROUNDING LOCATION. YOU CAN OPT TO REFEED THE RECEPTACLE WITH ROMEX/MC AND USE THE JUNCTION BOX TO PICKUP YOUR GROUND THERE PROVIDED THERE S ONE THERE. YOU CAN NO LONGER GROUND AT A WATER PIPE.
What else can you ground to because i just replumed using pex
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