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If there is a transformer for each light fitting then it seems unlikely that all the transformers would be at fault. You have already been in the loft and moved the insulation, so this should stop the transformers tripping out on thermal overload. You mentioned that you have seven lights...

I'm right with you there mate, people give advice in good faith, its up to the recipient what they do with it, and it is their own responsibility for their own work. However, given the litigious society that we have become, we have to cover our own back these days however much we don't like it.

Alot of lads use silicon or proper weatherproofing compound for electrical connections.

Yes, if its not the dimmer and not the connection, but all of the lights come on if they are going to then it would point to the transformer whether toroidal or electronic. This assumes that you have one transformer feeding all of the lights? If you have a meter you could check the primary...

Thats interesting, never seen one of those before, you learn something new every day.

Underwoods in London do the full range of Seimens: 0208 3620212. Failing that I am still pretty sure you can get it through Rexel Senate. We are getting rid of our range of Contactum TPN boards and changing over to Crabtree, I could do you a deal on one of those if you were interested...

What cable is supplying the 4 way consumer unit? You also need to find out what the maximum MCB size is available for your main consumer unit. You have a total load of 64amps that could possibly be used at once but that is the level of over current protection rather than maximum load...

Albert Follow this LINK , I've put the most common cables on there.

These are the back boxes that you require: 1g1/2w switch: 1g 16mm 2g2w switch: 1g 16mm 3g2w switch: 1g 16/25mm may give more room 4g2w switch: 2g 25mm 6g2w switch: 2g 25mm 1g dimmer: 1g 25mm 2g dimmer: 1g 25mm 3g dimmer: 2g 25/35mm 4g dimmer: 2g 25/35mm In very rare cases there...

Ban all sheds Thanks for that, I'll save that info on my PC.

You might be suprised to know that there are the odd failures. I'm a wholesaler and what we have found is that, normal day to day we have no problem whatsover. But then you can have a batch problem and all the cable supplied is sent back. Back in the days when we supplied the cheapest we...

But at least it sounds like your cable will be adequate for supplying your new shed. A rough tott up looks like you have a requirement of about 3kw/16a. Thats pretty near the max so you shouldn't consider supplying another shed in the future. I'm not a sparks so I can't advise on...

Dividing 23' and then 18' by 3.3 and then multiplying to get the area I get 38m2 I can't advise on the sparkying and I haven't used the exact metric/imp conversion but I was a little concerned on the calc. PS. How do you put the metres squared symbol in?

All of these spurs that you have added, are they fused?

The best smoke alarms are either the Firex ones ( 4870 with battery backup)or the EI ones (EI141 with battery backup). You will pay between £12 - £16 for one. There are also alot of cheaper unbranded ones around that may well be OK.

I'm suprised that the NIC have a maximum number of circuits, I would have thought that if they were adequetely protected then there wouldnt be a problem (Thats why I leave the sparky stuff to you guys :wink: ). I'll see if I can find you somewhere to get Siemens, from memory I thought it was...

Don't know about 200a supplies but as a wholesaler we are definately seeing a trend towards larger consumer units. 10 years ago a 6 way was probably most common. These days the 10/12 way split load has taken its place but sales of the larger 16/18 way split loads are definately on the...

Ally Try your iron in a different room of the house, if you try another socket in the kitchen you are still on the same circuit.

Hello chaps, just joined and thought that I'd introduce myself. Seems like a decent forum, I'm in the electrical wholesale side of things. I'll be able to tell you about products, havent got a clue about electrics though :wink: