Understand and Avoid Circuit Completion

What happens here

The electrician explains the fundamental principle of electrical safety: as long as he does not create a complete circuit for electrons to flow through him, he remains safe. This involves avoiding simultaneous contact with two points of different electrical potential (e.g., a live wire and a grounded surface, or two live wires). He demonstrates this by only touching one wire at a time with his hand, ensuring he does not bridge any potential difference through his body.

Goal: Prevent becoming part of an electrical circuit.