Does a wire nut connection need to be wrapped with electrical tape?
Saturday, June 30, 2018
They are called wire nuts in the electrical trade, but the official name is “twist-on wire connector.” Wire connections were soldered together before they were invented and needed to be wrapped with tape to insulate the connection, but that era is long gone. No tape wrap is now necessary.
Taped-up wire nuts are an indication of homeowner or handyman wiring work, since professional electricians don’t do it. Taping might make sense if the insulation on the wires was stripped back too far before twisting them into the wire nut, to cover the bare wire, but it would be better to trim the insulation correctly before insertion into the wire nut.
Tape is also not a substitute for a wire nut, as in the photo below, and splices should not be in the open.
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