The neutral wire and live wire of our house mentioned here are supplied with electricity, which means that the neutral wire or live wire of our house is electrical. When you measure it with an electrical pencil or multimeter, you will find that the neutral and live wires are charged. That is, tension appears, which usually exceeds normal tension.
What happens when the neutral line is energized? 1. If the neutral line and the live wire are both live, it means it is caused by a broken zero. 2. If the electrical appliances in the house can be used normally and the neutral wire and the live wire are all charged, it is because the three-phase transformer is unbalanced. 3. If the neutral and live wires are all charged after a power outage, it is caused by incorrect wiring of the leakage protector.