The reason why the air switch is burnt out

It doesn't matter much with the number of appliances in the home. It may be that the rated current of the circuit breaker is too small, and a large current is burnt out by heat for a long time. The general household uses a single-phase 220V power supply, which requires the configuration of the electrical meter, the power supply lead, the total circuit breaker, the breaker and the wires of each branch in the room must be matched according to the maximum amount of load used.

1, the kitchen room has induction cooker, 2kW, oven 1.8KW, microwave oven 1.5KW, etc., subtotal 5.3KW, but at the same time the probability of several full open is not large, then the total power of two of them can be taken 3.5KW, When the single-phase 220V voltage is 1Kw, the current is about 4.55A, the 3.5X4.55 is about 15.9A, and the wire is 4~6 square wire.

2, the bath room of the bathroom, the 4 lights are fully open, there are 2KW, the current is about 9A, the wire is 2.5~4 squares.

3, living room, room air conditioning according to common experience, living room 2, two rooms 1.5 10 1.5 = 3, subtotal 5 times by 0.736 is about 3.7KW, the current is about 17A. They are best divided into three lines to their own distribution box with a 2.5 square copper core.

4, the living room water dispenser or kettle is best separated from the lighting, a separate set of 2.5 square copper core wire to their own distribution box.

5, living room lighting, LCD TV, computer power is not large, the general current value of the subtotal of 0.2 ~ 0.4kW, for safety reasons can be used 1.5 square copper core wire installed.

The total current above is about 42A, so the maximum current of your metering meter must be around 50. The rated current of the main power 2P circuit breaker should be 63A, and the circuit breaker should be 16~25. Buying a circuit breaker is best to buy several domestic brands.