Switches are heavily used in daily life and can wear out or malfunction over time. Not all faults require a complete switch replacement. Here are four common causes of electrical switch failures and their solutions.

1. Loose Wiring

Cause: Vibrations from frequent switching can loosen the wires if not connected tightly.

Solution: Reconnect the wires securely to fix the issue.

2. Incorrect Fuse or Amperage

Cause: Using a switch with an incorrect amperage for high-power appliances can lead to a blown fuse.

Solution: Replace the switch or, if possible, just the fuse with the correct amperage.

3. Melted Live Wire

Cause: High-power appliances can cause the live wire to melt over time.

Solution: Reconnect the live wire inside the switch to resolve the problem.

Reference for the current capacity corresponding to the diameter of electrical wires in millimeters:

(When purchasing electrical wires, they are typically measured by diameter in millimeters)

1.5mm wire: Can carry a current of 10A, suitable for general lighting switches.
2.5mm wire: Can carry a current of 20A, suitable for larger appliances, such as air conditioners.
3.0mm wire: Can carry a current of 30A, suitable for high-power appliances, like water heaters.

4. Electrical Component Damage

Electrical buttons and indicator lights that have been used for long periods are another component prone to failure. For example, mechanical parts of electrical buttons may break down or LED indicators may reach the end of their lifespan. These components may not be easily replaceable, so replacing the entire electrical unit might be the only solution.

A word of caution: While these issues may seem easy to fix, electrical systems have various types and standards. If you lack the expertise, it's safer to hire a professional electrician to avoid the risk of electric shock.

Hopefully, this information is helpful. If you need an electrician, consider downloading the 【Call Handyman】 App to get a direct quote from a professional.

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