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Thanks. I'll have to try it.

I'm doing a bungalow to house conversion. Bungalow had E7 heating but there is now gas in the village so I'm going to put in gas CH with radiators. I need to decide how I plumb the downstairs rads. Do I carve out channels in the scree and then run pipes there? Or do I run 10mm pipes down the...

Do tell how :-).

You don't need to be connected to MET for an RCD to work. Or to put that another way, if the RCD works then there is another path. That path could be direct to earth and then to the power cable in the ground so not via MET. Otherwise RCD would not protect you mowing outside.

The CH will have a lot of plastic pipework so the bathroom radiator will be isolated by default. If it was all copper then it would already be connected to MET by boiler E connection so bonding under the bathroom floor wouldn't be needed or an issue. I see what you're saying re...

Hi, I've used Wickes ready mixed jointing compound in the past. I've found that very good and when it dries it seems water resistant so it doesn't soften and come off it you get it wet again (i.e. when painting or stripping). I've never used Gyproc easy-fill or Promix/Joint filler AFAIR. I...

That's my thought and assuming I put in the second connection in the floor void then if later someone says you can't have an external connection I would still have the one which could be inspected by cutting a hole in the floor under the bath. Although, strictly speaking the incoming pipe has...

But, getting back to point as we are drifting off topic, I reckon this: In order to be seen to comply with the regs I reckon that I should take a bond wire to the gas meter box so the bond can be seen and inspected. I think I'll also bond at what I think is the "correct" place, in the floor...

There are 2 assumptions that can be made. Body is insulated or body has good connection to earth. Worst case of those two is good connection to earth since if the body was insulated we could handle lives wires with no problem. So with that assumption, for safety, any other metalwork should be...

Playing devil's advocate, what about the case of a shower with the water running? There could be a continuous stream down to the drains underground and thus earth. Or for a bath you could touch earthy taps. Or holding a shower head with a metal outer that connects back to the water pipe. I...

By water potential I mean what voltage the water is at. Worst case is obviously wet person in shower/bath reaching for towel on towel rail. All metalwork wants to be visibly obviously isolated or at same potential as the water the body is standing in. I take your point about different earths...

I think the reasoning behind "consumer's side of an insulating section or insert" is that all gas pipes inside the house will be copper. This copper pipe comes through a wall and may get an earth from the wall itself, i.e. this could be below dpc so very damp, or the wall could have rising damp.

I agree. A case in point would be a shower cubical or a tap. These would be isolated or at water potential. I would tend to assume the worst, a cable fault under the floor which made the pipe live and hence radiator. Plastic pipe in the CH means the boiler bonding does not protect. If the...

I would imagine a meter box has a drain hole but that might be worse as with saturated ground that could introduce water. Supplementary bonding has to connect all exposed metalwork and the water pipes for it to be effective. Otherwise a fault raising the voltage on one item would raise it on...

Since my gas meter box is a buried in the ground type I think the copper pipe to the house would be a be too close to ground level not to bond it. A meter box half way up the wall would be different but one on the floor might fill up with water in extreme circumstances. You're right about the...

Useful to know. My vertical pipe up the inside wall will be on a dot and dab wall so will have a solid dab from floor to ceiling. Pipe surround will vent to floor void. But is there anything in gas regs to say bonding has to be visible?

Gas network use plastic which goes to meter box. Gas supplier (them who send the bills) fits meter to plastic pipe end (maybe copper there?). Your fitter runs pipe from meter into house for boiler, hob, fire etc.. That last run is most certainly in copper AFAIK.

According to onsite guide the wording is "All main bonding connections are to be applied to the consumer's side of any meter, main stop valve or insulating insert and, where practicable, within 600mm of meter outlet union or point of entry into the building if the meter is external" So since...

Are the corgi regs different to IET regs on gas pipe bonding? IET says as pipe comes in to building and where practical within 600mm. No mention of visible. In the house I'm building I was planning to have the meter box as in the ground type at the front. Gas pipe comes in and up the wall to...

FYI I have a aqualisa colt installed. I was told this was similar in performance to aqualisa opto thermo (discontinued). My cold water tank is on the ceiling joists so the head is: 54 cm Shower head to ceiling 1 cm plasterboard 7 cm ceiling joists 2 cm chipboard under tank 42 cm water...