Wiring for island D/W and GFI and Garbage Disposer

islandkitchenswiring

Currently under sink I have a 12/3 and a 12/2 wire that come into a junction box. The 12/2 comes from another wall GFI and the 12/3 comes from the breaker panel. How can I connect wires in box to add the necessary GFI outlet on the island along with an undersink outlet and switch for the plug in disposer and run the direct wire to the hard wire D/W.

Best Answer

The wiring should look something like this...

enter image description here
Grounding conductors not shown

Depending on where you live, the disposer receptacle may or may not have to be GFCI protected. The drawing shows GFCI protection, but it may not be required.

Also, if the line coming to the other receptacle is already GFCI protected, you don't need a GFCI receptacle there either.