Greetings, my brother wants to add some outlets in a basement with concrete floors for a train layout. It is a dry area and I'm thinking about starting with a GFCI, then adding 2 outlets downstream. There is a 12/2 w/grnd NM(tagged to kitchen circuit) cable coming down along rim board, exposed for 9 1/2 inches, through sill plate, into stud bay covered by plywood, to an outlet, then across to another outlet.
He has bought some elect pvc and outdoor boxes to surface mount on the wall as to not have to pull the plywood.

My question is what is the best way to hook into this circuit.
Can I grab the NMC at the sill plate into conduit? Would I need a 2 screw fitting on the conduit? Some of the plywood is missing, can I remove the second outlet and drop the
NMC down-- staple on a stud and run out through a hole in the plywood(when reattached) to a LB condulet, and splice in the LB?
Thanks, Randy

 

If this one of your 20 amp small appliance branch circuits for the kitchen, then you may not tap into this circuit. Where is the panel in proximity to the area you want to wire up? It might not be too difficult to run a new circuit from the panel.

 

To avoid a host of code violations and problems, consider a new circuit or two for your brother's basement. Tapping into a kitchen circuit is trouble.