What causes the power to go out occasionally when the lights in the office are turned off?
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A main circuit breaker is installed for the power supply to the office, while separate circuit breakers are installed for the air conditioner, lighting, and sockets. When the lights are turned off, the residual current circuit breaker occasionally trips (not every time). A new residual current circuit breaker was installed, but the problem persisted; even an electrician who checked the wiring was unable to find the cause. It’s so annoying; often the computer isn’t turned off, and power outages can cause files to be lost, which is also bad for the computer. I’m really hoping for help from fellow netizens – what could be the cause of this?
The branch circuit breaker doesn’t trip, but the main circuit breaker does; in my opinion, it’s still a quality issue – there are too many defective products of this kind available these days.
Turn off different electrical loads and test each switch one by one to see if the trip still occurs Check which route to use by looking it up.
It’s easy to fix – just don’t turn off the light.
Replace the main circuit breaker and the light switch again, each one. Give it a try
The branch circuit breaker does not trip; it is the main circuit breaker that trips. It is necessary to check branch by branch.
Have a professional electrician check the wiring.
It is possible that the rectifier overvoltage when the lights are turned off causes a non-metallic ground
The main leakage circuit breaker for power supply to offices or office buildings should be replaced with a leakage protection device that only emits an alarm without tripping the circuit, and the circuit breakers should also be replaced with leakage protection devices.
What is the leakage current of the main residual current circuit breaker?