Can You Use Electrical Tape to Insulate Wire in a Wall?
On One Hand: Electrical Tape Was Designed to InsulateElectrical tape was invented by 3M in 1946 specifically to insulate electrical wires and other metal objects that conduct electricity. It replaced the layers of tar-coated cotton, rubber tape and rubber adhesive that had been used for the purpose up to that point, making the process of eliminating fire hazards and short circuits much easier.On the Other: It’s Not the Best OptionIdeally, any electrical wiring used inside a wall should be new and coated with a continuous, unbroken layer of insulation. Damaged wires should be replaced rather than taped. If you do use electrical tape, be sure to use the appropriate variety. Black tape is used almost exclusively for insulation, with other colors indicating voltage and phase.Bottom LineIt won’t hurt to use black electrical tape to insulate a wire in a wall, especially for short-term repairs.
