How big is the leakage switch for general household use?

How large a leakage switch is needed for household use? First of all, it depends on the power. Under normal circumstances, 60 is enough.

1. The choice of leakage switch first depends on the electrical equipment of the home. Generally, the main switch at the home is a circuit breaker, and the switch at the socket has a leakage protection period. For the air switch entering the home, 32A is enough, and for the socket, 20A is enough.

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One of the most important things about the leakage switch is that you have to check its leakage operating current. If there are children at home, try to choose one with a leakage operating current of 15MA, and the ordinary one is 30MA.

2. In addition, you can also calculate the total power of the household first, and then select the leakage switch based on the power.

Use power/voltage to equal current.

For example, if the total power of electrical appliances is 4KW, then 4000/220=18A.

The rated current of the leakage switch is required to be greater than the load current.

Generally, the selection of the total leakage switch is calculated based on 1.5 times the load current, 18A*1.5=27A.

If there is no 27A leakage switch, you should choose a 32A one.

3. If the household leakage protector is selected with a leakage action current of 30ma and a leakage action time of less than or equal to 0.1S, it can completely protect it.

This parameter is to ensure that the human body will not produce pathological and physiological reactions after an electric shock accident.

Extended information: 1. Household leakage protection switches usually depend on the configuration of household appliances in the home: if there are large appliances such as air conditioners, induction cookers, electric heaters, electric ovens, electric water heaters, etc., they must be equipped with 32A.

20A for small homes and 40A for houses over 120 square meters.

2. The model of the leakage switch must be a high-quality product that meets the relevant national standards. When purchasing, it is necessary to check whether the manufacturer has a qualification certificate and whether it has passed the inspection of relevant standards.

This kind of data will be found in the instruction manual of the leakage switch. If it is not in the instruction manual, do not buy it.

Secondly, when choosing the model of the leakage switch, it must match the household electricity demand. These data include rated voltage, frequency and series. There are currently only two types of leakage protectors: 220v and 380v. Therefore, the leakage switch is generally made of 2, 3

There are three options: , 4. Generally, families can choose 2.

3. It is recommended to choose a current leakage protector.

Current leakage protectors can implement hierarchical protection to achieve selective action.