i wonder if anyone can help with intermittent tripping problem
Distribution board 20amp MCB feeds a 20amp contactor to the outside sensor for external lights and bollards lights. Another small consumer unit wired in a way from the disi board and the contactor when the sensor turns the lights on the then gives power to the small consumer unit (hope this makes sense). Small consumer unit has 3 RCBOs for outside lights
the 20amp MCB in the the distribution board randomly trips ie about every hour.
the building is new about 3 years old and nothing changed. My understanding if a MCB trips its either a short or overload. Overload?? why as it just started happening. I dont think its weather related than the RCBOs would trip. Could it be the sensor or the contactor?
Any advice would be appreciated. Any further questions please ask
Distribution board 20amp MCB feeds a 20amp contactor to the outside sensor for external lights and bollards lights. Another small consumer unit wired in a way from the disi board and the contactor when the sensor turns the lights on the then gives power to the small consumer unit (hope this makes sense). Small consumer unit has 3 RCBOs for outside lights
the 20amp MCB in the the distribution board randomly trips ie about every hour.
the building is new about 3 years old and nothing changed. My understanding if a MCB trips its either a short or overload. Overload?? why as it just started happening. I dont think its weather related than the RCBOs would trip. Could it be the sensor or the contactor?
Any advice would be appreciated. Any further questions please ask
