Electrical Wire Insulation Repair

As long as the copper conductors inside the wires are not damaged however the insulation is repairable.

Electrical wire insulation repair.

Slide heat shrink tubing over the damaged insulation area if the wire is not part of an electrical extension cord or power cord. The insulation covers the wire and it can be damaged through everyday use. Inline splice repair for wires that are cut short. This works but it looks bad and eventually that tape is going to fall off and then you re going to need to fix it again.

Look at the electrical wire where the insulation is damaged. Of insulation from the black and white wires. Then strip off about 8 in. Peel off the outer jacket of 12 2 nonmetallic cable.

Use a wide crimping tool which will provide a good crimp of the spliced wire. Electrical wire insulation for lamp and appliance cords is made from flexible polyvinyl chloride and electrical house wiring insulation consists of a thermoplastic high heat nylon material. If the wire is nicked or cut repair the wire before repairing the insulation. Use yellow flame tip of a suitable heat shrink propane torch start heating the metal channel area first for about half a minute.

Wrap heat shrink sleeve around the cable and install the steel closure channel over the raised profiles of the heat shrink sleeve and centre the repair sleeve over the cable damage section. The easiest and cheapest option is to just wrap some vinyl electrical tape around the damaged insulation to shore it up. Use a blow dryer or a heat shrink gun to shrink the tubing onto the wire. The quick and dirty fix to repair damaged wire insulation is to just wrap it in electrical tape.

Pick up a short length of 12 2 nonmetallic cable and a package of heat shrinkable tubing. Since the wiring in a ceiling fixture is usually 14 gauge you can fix it with insulation stripped from a 12 gauge wire. Materials and labor for repairs.