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[/url] Here we go with some pics of the meter & fuse, and a couple with the fuse removed. Fuse looks ok close up, no signs of arcing etc. Thanks again for all the help & assistance with this - its really appreciated.

Not sure if this is relevant or significant, but yesterday I had a look in the outside meter box. The 100a incomer fuse wasn't lock wired etc, so I removed it just to see the condition etc. Also noticed while I was in the box, that its a PME installation. Now the weird thing is, since I've...

Thanks folks - sound advice. Had a chat with my friend, who is Chartered, and HV AP, LV CP, is going to have a look. He's basically suggested the same as JohnD (thanks again) so after he's had a look, he will fit a new CU as outlined above as its notifiable up here. As an aside, and for...

Well I suppose I should thank you for all that... I could answer a few of your questions, but would a spark realy do all that before fitting a new CU? I intend getting my mate to fit a new CU for me, but I rather doubt all you have listed would be checked. Oh and in case you think I'm a...

Many thanks - I'm on the case to get a new MEM CU as I type this. Any advice on any particular MEM type?

Opened for applications this morning. Anyone interested needs: To have an old G rated boiler thats still in use Owner occupier of the property Have a quote from a GS engineer - you need the number Details of old boiler Details of new boiler - has to be A rated, and on the scheme list...

Thanks for all the great replies and advice. Clearly this isn't simple, and I think I've exhausted the simple things to try: Isolating each circuit at the breaker (noting comments about neutral and earth disconnections) Inspecting wiring & outside light installations, dont see anything...

Update: Back to square one ! I disconnected the FF, but the bloody thing kept tripping ! I've sequentially switched off each circuit in turn, but its very sporadic with no positive indication. There is simply no pattern - it can trip every 10 minutes, then be ok for a couple of days ...

Thanks, Pretty much sure its the FF. Last night I disconnected everything from the downstairs circuit, and it tripped about 5 times. Having said that, it could of course be a combination of earth leakage overall, and the FF is tipping the RCD over the trip limit. I've had a look at the...

Folks, Thanks for the excellent posts & advice. I'll be tackling this in sequence ! I will update when the work is all done. vmt

PS: Having a look at the FF now as advised above.

Thanks, here an update: what rating is the RCD? Most likely 30mA or 100mA. How often do you test it? - its a 30mA RCD, and its tested regularly. is there just one RCD for the whole house, or is it just for downstairs sockets, or what? - One RCD for the whole house how old is the...

Ever since I moved into my current house (4 years ago), I've had intermittent problems with the RCD tripping - pretty sporadic. I found it quite difficult to pin point. Recently, its become a bit more regular, and I've managed to track the offending item to the fridge freezer. The fridge...

Great advice - thanks. Intended to leave it in for a few weeks. This is all part of my scheme, in preps for new condensing boiler, which id hope to have fitted in around 6 weeks. Just trying to get the system as clean as possible. Next on the agenda is flushing the radiators.

Checked it just now - it was heaving with sludge ! Cleaned and put it back in system ! Sludge remover was put in system 3 days ago. Despite the clean looking water, it looks likely that there is still a fair amount of iron oxide circulating in the system ! Incidentally, despite all the...

Only fitted few days ago, and haven't checked it - yet !

Thanks No - I've used sludge remover twice on system (going to fit new boiler soon), and its always had inhibitor. When I drained the system, the water was very clean, and quite frothy - inhibitor obviously working. Edit: I also have a Magnaclean on the system.

I have an open vented system, with boiler downstairs, pump in airing cupboard upstairs, and usual expansion talk in the attic. 12 radiators in total. I've noticed that 2 radiators upstairs need bleeding every few days, and wonder where or how air is getting into the system? All other...

Absolutely ! & Thanks The system currently has sludge remover in it, and before fitting it, I intend taking off all the radiators, and flushing them through, then fitting new TRV's & lock shield valves. New pump and new boiler will follow in around 6 weeks. The Magnaclean is really to...

Appreciate the advice, but to be honest, for every person denouncing the Magnaclean, there a similar amount praising it ! Perhaps you could expand on why you think its the weakest link in a heating system? ASIUI, the problem used to occur with the (red) isolation valves leaking, but that has...