What term applies to the act of disconnecting electrical circuits from their power sources?

The term that applies to the act of disconnecting electrical circuits from their power sources is isolation. In electrical practice, isolation refers specifically to the process of ensuring that an electrical circuit or piece of equipment is completely disconnected from its power supply. This term implies not only the removal of power but also ensuring that no unintended re-energization can occur while maintenance or inspection is taking place.

Isolation is critical for safety, especially when working on electrical systems, as it protects personnel from inadvertent electrical shocks or equipment damage. It's a recognized practice within electrical codes and safety standards that emphasizes the importance of creating a safe working environment by fully disconnecting equipment from electrical sources.

On the other hand, while disconnection refers to the physical act of removing power, it does not fully encompass the safety measures related to ensuring that the circuit remains unpowered throughout work. Separation might imply physical distance or breaking connections, but does not specifically address the safety aspect. Switching can refer to changing the state of a circuit but does not convey the complete disconnection and safety measures implied in isolation.