Many people have problems with their wiring because the power of the wires and appliances is not matched, but the method of judgment is actually very simple.
The lighting and low-power sockets in ordinary homes are fully sufficient with wires of conventional thickness, and there will be no overload situation. But for high-power appliances like air conditioners and electric water heaters, thicker wires need to be chosen. If too thin wires are used, the current of the wires will exceed its capacity when the appliance is turned on, causing continuous heating. Over time, the outer skin will be burnt out.
Before buying wires, first calculate the total power of the appliances you want to bring, and then choose the corresponding thickness of wires. Don't ignore the equipment with high power, use the same type of thin wires. Don't plug multiple high-power appliances into a thin wire at the same time. If multiple devices are turned on together, the total power can easily exceed the upper limit of the wire.
Matching wires and power, there is no need to spend extra money on buying too thick wires to waste costs, and there will be no safety hazards left by too thin wires. It is just right to use.