The term "live working" refers to performing work on circuits that are?

The term "live working" specifically refers to performing work on energized circuits, meaning that the electrical system is in operation and carrying voltage during the work. This practice is often necessary in specific situations where it is impractical to completely shut down equipment. Live working requires specialized training, tools, and safety equipment to protect workers from electrical hazards such as shock or arc flash.

In contrast, working on de-energized circuits is generally preferred for safety reasons, as it eliminates the risk of electric shock. Floating refers to circuits that do not have a clear ground reference, which can create unique safety concerns but does not pertain to the act of live working. Grounded circuits are those that are intentionally connected to the ground, ensuring safety by providing a clear path for fault currents. However, grounded circuits can also be energized, but the key term "live working" directly pertains to working on energized systems. Hence, the focus is on the critical safety practices and protective measures that must be in place when engaging in live working scenarios.