I'm installing a new dishwasher and the dishwasher itself has the black, white and green wire, the power supply (which is coming out of the floor of the house) doesn't have a green wire it has a black wire and white wire. What do I do with the green wire that is coming from the dishwasher junction box?
Wiring – connect the green wire on the dishwasher
wiring
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Best Answer
The flex is your grounding path, so cap off the green wire
In your situation, the metal conduit (flex, then rigid/EMT) is serving as the equipment grounding path, via the conduit fitting going into a 1/2" knockout (KO) on the dishwasher junction box, so you don't have a ground wire coming in. This means you can simply cap the green ground wire off; if that's not satisfactory for some reason, you can use a grounding locknut instead of the existing locknut on the fitting, then attach the green wire to the screw on the grounding locknut.