Where to install the first-level surge protector, in addition to the main distribution box, usually in the distribution box outdoors and outside the protection range of the lightning rod, such as the main power supply incoming distribution box, the main. Where to install the first-level surge protector, in addition to the main distribution box, usually in the distribution box outdoors and outside the protection range of the lightning rod, such as the main power supply incoming distribution box, the main. When purchasing a surge protector for your home, you need to consider its installation location. Surge protectors are typically connected in parallel behind the main power supply and main circuit breaker, positioned as close as possible to the protected object. An incorrect installation location. The basic position of section 443 is now that SPDs shall be installed. This setup gives your building strong protection against surges. It is the main place where power gets sent to different areas. Generally speaking, in addition to the three-phase five-wire main air switch, the air switch will continue to be. Usually, an air switch is designed in the distribution box to control the power supply to the load. According to the power supply situation, we divide the two. Proper placement of Surge Protective Devices (SPDs) is the single most critical factor determining whether your facility withstands a catastrophic electrical event or suffers thousands of dollars in equipment damage.
