As the name suggests, power cables are used to supply electrical power from the circuit breaker box to HVAC equipment like air handlers, package units, heat pumps, furnaces, air conditioner condensing units and more. Power cables must be rated for the voltage being used, usually ranging from 120V to 240V, and properly sized based on the load. https://prachicmi.livepositively.com/hvac-cables-enabling-efficient-temperature-control-systems/new=1