Nicked THHN HELP

Shrink tube it?

TRy Scotch 88 tape. Works everytime.

Tape or heat shrink is probably your best bet as long as it is inside a jbox and not up in a conduit.

Wirenuts are pretty reliable connections as long as they are made up correctly and not in a high vibration environment. There are connectors you can get that look like wire nuts but that crimp together that make a better connection than a wire nut, but for home use, I'd go with a wire nut. I always tape the wires together under the wire nut after twisting them together just incase someone yanks on them.

I never tape the wire-nuts, just in case I want to take them apart later ;-). I would not cut the wires short, leave it as a last solution. Heat shrink or tape is a ok since wires are in the boxes. BTW I hate THHN wire, it is so often improperly installed, it causes a lot of trouble. We had to replace probably around five hundred runs of THHN because it was deteriorating in the pipes and causing shorts in the conduits. I think it was combination of the lubricant used during the installation, water, pipes breathing, rust and concrete dust that got in to the pipes during the installation. That might make you feel better when applying heat shrink.

Art.

Art - just curious - if you hate THHN, what do you use instead?

RW90 it is, it needs bigger pipes and installation is more expensive over all, but as we found in the hard way, it pays off. We use other wire for inside wiring in cabinets (let it be even THHN, then we join them at the terminal strip), and from there RW90. If you have some other ideas I would like to hear them. Thanks. Art.