Multiple choice

When the main switch of the house is put off it disconnects the

  1. Live wire only

  2. Live wire and the earth wire

  3. Live wire and the neutral wire

  4. Earth wire and the neutral wire

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The main switch disconnects only the live (phase) wire to cut off power supply. The neutral wire remains connected to ground. The earth wire is a safety connection and is also not disconnected by the main switch. This prevents current flow while maintaining safety grounding.