How Can You Solve Common Electrical Faults？

Fault 1:Why is the neutral wire live?

• Analysis: A live neutral wire, often referred to as backfeed, is usually caused by a loose connection or a short circuit in the neutral line.
• Solution: Check the wiring to ensure the neutral wire is securely connected, particularly at the top and bottom of the switch.

Fault 2:Why does the residual current circuit breaker (RCCB) trip with varying intensity and duration?

• Analysis:
  • Trips immediately or can’t be reset: Short circuit, neutral and live wires touching, or grounding issues.
  • Trips with high intensity: Leakage.
  • Trips with low intensity: Overload.
• Solution: Use a multimeter to identify the specific cause and take appropriate action.

Fault 3:Why does the light bulb flicker?

• Analysis: The bulb may be faulty or have a loose connection.
• Solution: Replace the bulb, tighten the bulb holder, and check the neutral and live wires at the main switch.

Fault 4:Why do appliances not work at 200V or lower?

• Analysis: This may be due to the ground and live wires being swapped.
• Solution: Check the ground and neutral bus bars, ensuring correct wiring. Use a multimeter for confirmation.

Fault 5:Why is there no power at the switch, but there is power at the input terminal?

• Analysis: The switch is likely faulty.
• Solution: Replace the switch. Choose switches from reputable brands to avoid counterfeit products and ensure safety.

Summary

These five common issues are frequently encountered in circuit maintenance. Whether you are an experienced electrician or a novice, these methods can help you quickly diagnose and resolve problems. More fresh electrical maintenance knowledge will be continuously updated. For more information, visit cncele.com.