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Douglasmcc
I'm new to this forum. I've recently done a visual inspection of a campsite hall as a favour which has has had an extension built. It's all a bit of a mess electrically speaking. The consumer unit has a 100A main switch and 10mcbs divided across the two 30mA RCDs. The major problem is that when a significant load is placed on circuits 2 & 3 it trips the RCD2 of the other side of the board, not its own. The consumer unit circuits:
RCD 1 - 63A 30mA
My guess in regards to the tripping is that the neutral has been crossed over causing an imbalance between the two sides of the board?
The division of circuits above is not particularly intelligent and not how I was taught; divide the board between fixed and portable circuits.
There are two 13a spur units sitting about 20cm above a stainless steel wash hand basin. I'm sure this is not safe?
There is no earth bonding at all throughout the building especially in the kitchen, which has stainless steel sinks and tables. Nor is any bonding visible in or around the hot water tank or the gas boiler. The SWA cable earth tag has not been fixed to the consumer unit, although it is present.
I'd appreciate your input especially regarding the tripping.
Many thanks
RCD 1 - 63A 30mA
- External Socket (40A)
- Socket, hand dryers, Shed & Gas Boiler (32A)
- Hall sockets (32A)
- Fire Alarm (16A)
- Hall lights & outside lights (6A)
- Kitchen Sockets (32A)
- External socket (32A)
- Gas isolator and fly zap (16A)
- Hall lights (6A)
- Kitchen & toilets & emergency lights (6A)
My guess in regards to the tripping is that the neutral has been crossed over causing an imbalance between the two sides of the board?
The division of circuits above is not particularly intelligent and not how I was taught; divide the board between fixed and portable circuits.
There are two 13a spur units sitting about 20cm above a stainless steel wash hand basin. I'm sure this is not safe?
There is no earth bonding at all throughout the building especially in the kitchen, which has stainless steel sinks and tables. Nor is any bonding visible in or around the hot water tank or the gas boiler. The SWA cable earth tag has not been fixed to the consumer unit, although it is present.
I'd appreciate your input especially regarding the tripping.
Many thanks