How To Determine The Installation Position Of The Surge Protector In The Distribution Box

Surge protectors are indispensable components for lightning protection inside buildings. They work together with circuit breakers and other components to protect the safety of the power grid, allowing electrical equipment to operate stably and safely. surge protection device can quickly discharge overvoltages that invade the power transmission system in a timely manner.

Usually, an air switch is designed in the distribution box to control the power supply to the load. Under normal circumstances, in addition to the incoming main circuit breaker, there will also be a sub-circuit breaker on the load branch. According to the power supply situation, we divide the two ends of the circuit breaker into the power side and the load side. As the name suggests, the end of the circuit breaker connected to the power supply is the power side, and the end connected to the load is the load side. However, for the main circuit breaker, neither side of it is directly connected to the load, so both are the power side, while the sub-circuit breaker is different, with a load side and a power side.

Let's sort out the installation issues of the surge protector. Under normal circumstances, we choose to install the surge protective device in front of or behind the main circuit breaker at the incoming line. However, the installation depends on the actual situation of the project. For example, if there is no sub-circuit breaker installed in the distribution box, then the surge protector is installed on the front power side of the main circuit breaker. On the contrary, if there is a circuit breaker in the distribution box, we can install the surge protector on the power side of the circuit breaker.

In either case, as long as you understand how to distinguish between the power side and the load side, and follow the standard requirements for the installation position of the surge protector, the problem of the installation position of the surge protector in the distribution box can be solved. Today, the editor briefly introduces the common installation position problems of surge protectors. If readers have other special cases for the installation of surge protectors, you are welcome to communicate with us.