Ring circuit power loss

Posted by Mike Connolly, on Tue 26 Aug 2014 11:54am

No power to the ring circuit but no MCB tripped. What is likely cause?

Matthew Colak

Wed 27 Aug 2014 07:44pm

Hi Mike, unfortunately if it isn't a tripped RCD then potentially it could be several things which would need to be checked. 1. MCB failure (it does happen) 2. Loose connection of Live (brown connectors) in top of RCD. 3. Loose neutral connections on neutral bar in consumer unit. 4. Neutrals for ring circuit incorrectly connected or not connected to appropriate location in consumer unit. 5. Busbar loose or MCB not powered by incoming supply. As all these problems exist within the consumer unit please ensure you use proper isolation techniques, are competent or qualified to change or alter circuits within the consumer unit due to the live voltages present. Kind regards, Matt ELCERT

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Russell Baron

Tue 26 Aug 2014 08:20pm

Hi Mike, Like Andrew says check you don't have a RCD that's tripped.The mcb will trip on overload but the RCD trips with earth leakage.It will need resetting. Thanks Russ

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