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The Mains board usually trips when a light bulb Blows or if a fault is detected. This will nearly always happen at nightime and leave the house in darkness making it very difficult to locate the mains and reset the trip switch.
The Mains board usually trips when a light bulb Blows or if a fault is detected. This will nearly always happen at nightime and leave the house in darkness making it very difficult to locate the mains and reset the trip switch.