What are the disadvantages and advantages of splices?

Answer 1

Splices allow wires to be pulled into raceways without the need for looping longer lengths of wire; looping wire-pulls entails more labor and increasing chance of damaging to the wire Each splice however, introduces a potential failure point if not done right, and requires its own special parts and extra labor. The splices can heat up, burn up, shake loose, etc. If we are talking control wiring, the added splices increasing the chances of mixing up the wires, which will cause mucho troubleshooting woes.