A power cable is a heavy-duty electrical conductor, or multiple conductors, encased in protective insulation and jacketing designed for transmitting electrical energy. Unlike control or communication wires, power cables are engineered to handle high voltages and large fault currents, featuring specific layers for dielectric strength, mechanical protection, and sometimes metallic shielding to control electric fields.
The excavation crew accidentally struck a buried 11kV power cable, causing a massive flashover and tripping the substation feeder.
Do not mix it up with
- Power cord: A power cord is a flexible, temporary connection for appliances, whereas a power cable is usually a permanent installation for bulk power transfer.
Related terms
Cable core
The central current-carrying conductor and its immediate insulation within a larger cable.
Insulation
A material with high electrical resistance used to isolate conductors and prevent current leakage.
Conductor
A physical material or wire designed to carry electric current with minimal resistance.