Circuit breaker wiring precautions - Solutions - Huaqiang Electronic Network

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For those working in electric power, it is common practice to deal with electrical equipment. But even so, sometimes it is inevitable to make mistakes. As far as the circuit breaker wiring is concerned, the professional electrician is simply a pediatrics, but here is a little emphasis on the relevant precautions, and also popularize some of the "outsiders". know how.

General circuit equipment, there are power and load signs on the top, in the actual wiring process, according to the above logo, do not reverse the two.

The control switch or protection wire must not pass through the current transformer. When three-phase five-wire or single-phase three-wire system is adopted, the protection wire must be connected to the protection trunk of the leakage circuit breaker. In the case of single-phase lighting circuits, three-phase four-wire distribution lines, and other lines or equipment that use working neutrals, the neutral line must pass through the current transformer.

In the system where the neutral point of the transformer is directly grounded, once the leakage circuit breaker is installed, the working zero line can only be used as the working zero line after passing through the current transformer, and cannot be grounded repeatedly, nor can it work with other lines. The zero line is connected. The electrical equipment can only be connected to the load side of the leakage circuit breaker, and one end is not connected to the load side, and the other end is connected to the power supply side.

Mainly the above points, other small details still have to pay attention to themselves, after all, it is to deal with "electricity", can be more careful when you are careful, check it several times after loading, do not delay much time.