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.
Electrical wire insulation repair.
The easiest and cheapest option is to just wrap some vinyl electrical tape around the damaged insulation to shore it up.
This works but it doesn t look professional.
Use yellow flame tip of a suitable heat shrink propane torch start heating the metal channel area first for about half a minute.
Since the wiring in a ceiling fixture is usually 14 gauge you can fix it with insulation stripped from a 12 gauge 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.
Then strip off about 8 in.
Use a wide crimping tool which will provide a good crimp of the spliced wire.
Materials and labor for repairs.
As long as the copper conductors inside the wires are not damaged however the insulation is repairable.
If the wire is nicked or cut repair the wire before repairing the insulation.
Inline splice repair for wires that are cut short.
Use a blow dryer or a heat shrink gun to shrink the tubing onto the wire.
Peel off the outer jacket of 12 2 nonmetallic cable.
Pick up a short length of 12 2 nonmetallic cable and a package of heat shrinkable tubing.
Look at the electrical wire where the insulation is damaged.
Use electrical tape to cover up the nicks made to the wire insulation.
The quick and dirty fix to repair damaged wire insulation is to just wrap it in electrical tape.
Inline barrel crimp type splice connectors work well where the wires may be cut short.
The insulation covers the wire and it can be damaged through everyday use.