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Hi, I am just in the process of replacing all the metal (i.e. brass and chrome effect) light switches in our house with plastic ones because most of our five lighting rings do not have an earth. I was also planning to replace the metal patress screws with nylon ones. Two questions for...

Securespark - I'd prefer NOT to have an FCU in the bedroom if I can get away without it (i.e. in terms of regs). RF- yes the circuit is RCD protected at the CU.

Just a backup. But at times when we have got people staying, it would be nice if we could run the immersion whilst the shower(s) was being used, so as to keep the hot water topped up for the next person.

Hmm... not sure about that. There must be a fairly easy route because someone has already run that earth cable the same way. And the "wall" is actually part of the roof (we have a very odd asymmetric roof shape) Sorry, you've lost me there. Wouldn't that require junction boxes to extend the...

Hi, As per an earlier thread, I have got two shower pumps in my loft which are connected to a standard double 13amp socket. The pumps are rated at 2.1A and 2.4 A respectively. I talked previously about putting an RCD faceplate on this socket to get round the fact that the socket is fed...

Update time.... Spoke to EDF about getting the earth sorted. They referred me to Scottish Power (my supplier) who in turn arranged for EDF to send round a guy from Siemens yesterday to check the earth loop impedance. :roll: Upshot of it is that yes they can switch us over to PME...

Thanks for the ongoing help. Much appreciated. Indeed, there isn't. Correct on both counts. Yes. Or could I just replace the old consumer unit in the utility room (which that switchfuse feeds) with a modern RCD protected one? Do you mean one that would be used instead of the...

Right, here are some photos. I can make them bigger/higher res if more detail is needed. This one http://www.photobox.co.uk/shared/photo.html?c_photo=1643229803 gives an overview of everything in the integral garage. The big metal box top left is the one that feeds the secondary consumer...

Sorry, guys - you;re losing me a bit now. TT? TT -> PME?? Photos to follow shortly......

Hi, I've just discovered a card from Transco on top of my gas meter which points out that the gas pipework has no equipotential earth bonding. This was obviously issued prior to my buying this house a month ago and was left there by the previous owner. I've already mentioned the slightly...

Yes - it is a Wylex unit with an RCD main switch and then MCBs for each of the four circuits. Just come across another issue whilst digging around by the consumer unit. Probably best start a separate thread for that though......

Fair enough. If I do decide to go ahead and RCD them, is the suggested faceplate replacement an acceptable way to do it - i.e. just as good as having an RCD on the consumer unit? No doubt it was done like that because the airing cupboard was the easiest place from which to run a spur into...

Hi, The house we moved into about a month ago has two shower pumps in the loft – a 2 bar one for the ensuite and a 1.5 bar one for the main bathroom. They get their electrical supply via a standard double 13amp socket in the loft. I had assumed that this 13amp double socket was spurred off...

Yes That was part of my original questions really. I don't know for sure that the system IS full of clean fresh water - it just doesn't look orangey like it did at the weekend. Should I be able to "see" the Fernox in the system? This only happened for abut 10 mins or so after the system...

As an alternative, could I use this technique: http://www.diynot.com/forums/viewtopic.php?p=120492#120492 to get extra Fernox into the system quickly - even though I have an open vented system rather than a sealed one?

That's what I did last time, but now after a few days the Fernox has "disappeared"...... But if it doesn't cause any overflow, then the extra Fernox will just sit in the header tank, won't it?

Not fussed about the £15 to £20 for another bottle. But what is the easiest way to add it? Can it be done without draining down the whole system? And if I do have to drain it down again, how can I ensure that this time the level of Fernox stays high enough. I don't really want to be draining...

Hi, At the weekend, I had to drain down our (open vented) central heating system. When I refilled it, I bought a bottle of Fernox and added a slug of it every 20 seconds or so as the header tank was refilling - and hence (I presume) as the header tank was in turn refilling the rads. By...

Hi, I'm in Essex, and would welcome any recommendations for decent installers of EPDM. David.

Hi, We are about to move into a house which has a flat roof of approx 12m x 3m over the garage and a downstairs bedroom. The existing felt roof is at the end of its life - it's had to be patched at various times over the past few years and also (at least) two panels of the existing chipboard...