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technically there's more to it than just the colours. Those old 25mm red and black tails have less strands in them - meaning they are hard to bend The modern ones have more strands and are thus more flexible

btw looks like some of these ancient wylex boards are fetching a pretty penny on the antique market. Might try flogging it on fleabay once disconnected https://www.ebay.co.uk/itm/284536279350?hash=item423faf1136:g:COQAAOSwx0ZhTvR5

you may well be right.. may be they snipped some of the strands. It's definitely 25mm though

It's on a old wylex CU at the moment. You can see how the earth's wired in from the pics below.. it seems to be going straight into a terminal?. By the way I know maybe I'm not supposed to take the cover off but I wanted to get an idea as to what I need to get done. I put the labels on - and...

which is why I wrote upgrade in italics I thought 25mm was probably an older standard and the new modern standard is 16mm.Hence all CU's being designed for 16mm earths

No, I did mean what I said. I want to upgrade from 25mm to 16mm. . The earth tail is currently 25mm. My understanding is that the standard for earth tails for domestic installations is 16mm. All the modern CU's are designed to cater for 16mm earth tails and 25mm L&N

A few questions In the pic below, there's a blue cable with a L on it and a brown with a N. I thought Blue was always meant to be Neutral and L for Line. Are they labelled correctly? Who's responsible for upgrading the tails out of the isolator (the red and black ones)? If I want to upgrade...

Anyone seen these kind of radiator valves before? How do I close these radiator vales? can you even close them?

I'll do a more scientific test. My wife may have put the central heating on before - which may have resulted in the warm radiators Its a main eco elite (~6 years old). In the meantime I've turned the DHW knob all the way to the minimum - I believe that turns off pre-heat according to this .

The thermostat is off but the radiators are warm. At the boiler the 'tap' light is on but all the taps are off. So there should be no demand for anything.. but the radiators are warm and the tap light is flashing! The hot water pipes are cold so no demand for hot water whatsoever. Any idea what...

Hi I have new 32mm MDPE coming into the house about 1-2 metres away from the MDPE is the existing 15mm copper (currently supplied by lead) I want to join the 32mm MDPE to the 15mm copper and have a stop cock but not sure what parts to use. Can you advise? I was hoping that something like this...

the annoying thing is that I did actually tell him there's a gas pipe running along that path. Well, I guess I'll keep you posted.. He just called me again asking if I needed any more work done after o_O Just being civil with him at the moment. I'll ask him about the liability insurance on...

I'm in a bit of a tricky situation now because he's half way through the job and is actually a really nice guy. I think I'll wait for him to finish and then say.. hang on, don't you have public liability insurance? This is exactly the kind of thing it's meant for.

I've hired a builder to lay a MDPE pipe and he hit a yellow gas pipe (underground) and caused a gas leak. Cadent came out and fixed it on the day. The builder just told me about it now and was asking that we go halves on the cost. I said OK on the phone but with hindsight I'm thinking he is...

Trying to heat up a pipe to remove a joint but not having any success. The pipe looks dry, but when I heat it up I can see steam coming out any ideas what the solution is ? How far away does the water need to be for the heat to stop working

@muggles @mattylad by the way I just found this in the meter box.. does this mean the bonding should be inside the house? which is about 3-4 metres away from the box Can I just reposition the bonding to be inside the house? it would be underneath floorboards

Still planning for this.. thinking about how I'm gonna lay the pipe. The run is about 60 metres. So the route requires two 90 degree bends of the 32mm MDPE.. how am I going bend the MDPE? Or for that matter how am I gonna straighten it? It's on a coil at the moment and looks pretty tough! I've...

do you mean coat the mdpe pipe with Polyurea coating? (which Id never heard of before - but looks awesome )

I'm planning on laying a water supply to my new house which has a lead supply currently. So it will be a brand new MDPE 32mm supply running about 60 metres. I'm hiring a digger with a driver to dig a trench. Never done this kind of stuff before so any advice appreciated. Think I need the...

in case anyone's interested.. heres the 'how to lay your pipework' document from anglian water