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Thanks for the replies. The building inspector came out and has agreed we can fill it in and put a lintel over it resting on pads etiher side. Unfortunately one of these will be on the neighbours side, and wedged in a 2 foot space between the well and a drain. Oh well, I can see a last...

Hello, We're about to build an extension to the rear of our property. On breaking up the multi-layered concrete out back I came across the following (see images). I've cleared it out to 5ft deep but don't really want to stand in it more until I know the depth. A metal pole...

Good question. Thinking back I'm not sure they ever sent it through, will have to dig out paperwork from that time (we had a lot going on with electrics/new boiler/plastering etc etc.)

The left hand incomer is 100mA time delayed. This replaced a messy old fusebox and took them two days to figure out the house wiring. As mentioned previously, the 3 sockets in the room above the garage all run from different MCBs. Is there anything I should be concerned about? We're...

I will replace them, I just didn't want to hike back to screwfix once I'd removed the busbar. Will pop in on my way home tomorrow. It's successfully coped with a dishwasher running. Still wondering if people think this has been unsafe for the last 4 years?

Thanks to all those who responded, I think it's all resolved now. (fingers crossed.) I replaced the RCD, had to clean up the busbar but all looks good now. Spot on. Have a look at these images: Does this means we've had an unsafe installation for 4 years? Keeping a close eye...

Thanks for all the replies and help, will have a think and a look at things tomorrow then probably call someone in.

Hmm, it might be worth getting someone in to do this bit then. Is this likely to be the only problem? Or is it a result of a problem elsewhere? Do RCD's 'fail' often or is this a rarity?

I'm not certain no. Everything appears very tight. I assume if I hit the left hand RCD that will remove power to the right hand one so I can remove it? (there isn't any other switch to turn off all electric from what I can see....and certainly want to be sure!)

Latest: I put a kettle on whilst the power was still on. Came back and watched the RCD crackle and occaisionally spark. It then really started spitting out sparks so I hit the reset button. I assume from this it's a faulty RCD? Or could there be other problems elsewhere causing this...

Apologies, it is 80A, not quite with it at the moment (11 week old baby keeping us busy!) There are no signs of heat damage, copper looks clean. As I type, power been on for 15 minutes. Two photos at: http://www.diynot.com/network/rp9/albums/6208 , it's the right hand side (the taped...

Just an update. I've done a continuity check and Live and Earth are all ok. Neutral however wasn't. I loosened, reset and tightened the bottom of the RCD. Voila, the power was back on......for about 10 minutes (I boiled a kettle ok whilst it was on.) It then went off. Turning it back on I...

I haven't got a multimeter...yet. If I can't borrow one I'm off to buy one on my way home, along with a long cable to try and split the ring if I can (the wiring seems a little 'abstract' (to be polite!) What's the best way to test the RCD/MCB? This time the trip seemed to be random (ie...

It does have a button and it does trip. Unfortunately it's the only MCB on the circuit.

It's an mk one (at least the mcb was so I assume it is.) Alas I've tried that...many times! Thanks, Rich

Evening. Our downstairs socket ring tripped the mcb on Sunday. Despite resetting it and the RCD several times (the switches are on, they don't flick back off) there was still no power. I've unplugged and switched off every socket, still nothing. I've swapped the downstairs and the upstairs...