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I wonder if any of you can advise why my CH system would have a non-return valve within it? For some time now three radiators ahve not been heating at all and I decided to investigate today as we are about to have some decorating done. (Usually I do these things int he middle of winter and...

May seem a bit of an odd question but here goes - is it allowable to run a cable through a knock out box - i.e. not actually connected to an outlet (although the outlet will be connected to a separate cable)? Ultimately the two cables will be part of the same circuit, it's just that the routing...

Redecorating kitchen tiling in particular small part of false wall which houses h/c water pipes and some cables - ring main and oven radial. Took off the false wall panel and noticed oven radial passes around the cold water pipe within the void. Should the pipe be insulated in any way? I...

Does anyone knwo the maximum outlet hose length allowable on a dishwasher. It is going into a trap not stand-pipe. Thanks

Does anyone have any advice on how much lighting is needed in room spaces please. We are having our kitchen lighting upgraded from two spots each rated at 80 watts and are considering normal voltage halogens. This is purlee for the ceiling, we will also be having under unit lighting above...

Chaps and any sparkettes, Would apprciate your advices on a temporary problem I am going to have to make allowance for. We are finally renewing our kitchen and a few sockets/outlets need moving. One of the moves will be an oven and its outlet (30a), but due to the new position of oven and...

We have a timed fan in a WC. I have just discovered it is wired using T&E with the earth wire (wrapped in red tape either end) as the live feed for the timer part of the fan. I would not have thought this is legal and four core should be used. Is the former legal. the fan itself does not...

Does anybody know a good supplier of ducting for a kitchen extractor please. Need a couple of dampers, connectors and y-pieces for a complicated job - 125mm ducting. Thanks M

Problem in kitchen which I hope is not a propblem. Wonder if you can help. Had to disconnect our hob for one day. decorating. Did nothing to the wiring at all. Re-connected last night and the system tripped. Diconnected once again, checked for break in cable - couldn't see any...

Have a small problem and I hope someone has the advice to get me over it. In order to level a wall we are hanging our units on I had to put a 2" x 3" batten on the wall over a length of 200cm. The units will be hung from this batten with a similar depth batten at the base of each unit for...

First of all thanks for previous advice given, by reading this and other posts I tihnk I am nearing the end of our problem. We have an air issue. Fully pumped system, Spurima 80 Boiler. Air collecting in bathroom rad , nearest pump. We have one very sluggish rad in a bedroom (may be an...

Has anyone used Everad Inhibitor - is it any good? Can inhibitors be mixed togther e.g.- Everad and Fernox? Tks

Sorry to be a pain, but in a previous post you mentioned plastic pipe (Hep2o in this case) needing to be barriered. Would it be possible to explain what this is? Tks

I am little confused by the above. Don't get me wrong - not a pro spark, but need to do some work which is a bit of a jigsaw and will probably have to do it myself. On looking ont he forum have found it useful and did what Pedantic suggested and bought IEE Elecs Guide. Interesting book...

We have a fully pumped system - Potterton Suprima. System was extende two years ago into an extension. pirping used in extension is Hep2o. Rest is copper. Have a bisque radiator in the bathroom which seems to need bleeding every day as do two other but to lesser extent. The bathroom rad...

I am replcaing a kitchen ceiling - after having a new lighting circuit put in. Is it necessary to skim the boar after fitting - I was thinking of using 12.5mm tapered edge so I can tape and fill the edges. Also as it is kitchen space should I have two thicknesses of board and vapour shielding...

Potteton boiler, fully pumped system, 13 rads. Systme extended with new rads/pipework for an extension. Have changed the pipework as recommended on this forum, taking out a dead leg and amending some intricate routing on two rads - bathroom rad now heating up nicely, rad furthest from pump...

Thanks for previous advice on false ceiling cabling and live earth wire by the Ferryman. Reading many posts on bathroom zones leaves me a little concerned and I would appreciate your advice. The halogen lights we want to have installed will be going into a false ceiling which is partly...

I am replacing current lighting with some normal voltage halogens (thanks for advice on previous post) I am somewhat puzzled by the wiring arrangement on a 2 gang switch, but I am sure one of the bright sparks here [every pun intended] will be able to explain in a trice. There is only on...

Need to re-route some cabling in order to 1) Change kitchen lights from two spots to eight halogens . As I cant get to celing void I am going to drop the ceiling by two inches and run the cabling inside the 2" void. Is this allowable - are the any specific safety requirements I must be aware...