SEPTA Electrician Practice Test

Lockout is the term used to describe locking a switch or breaker in the off position before working on it. This creates a physical barrier that prevents the equipment from being energized while you perform maintenance, protecting you from unexpected startup or release of energy. Grounding is about providing a path to earth to reduce shock risk, and tagout involves placing a warning tag to communicate that the equipment is not to be energized, but a tag alone does not stop energization. Current refers to the flow of electricity, not to a safety procedure for isolating a source.