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The worrying thing is that the CU was changed less than 5years ago, i would of thought that it would have been spotted then, or the doggy heating wiring? But the neighbour (he doesn't miss much) says it was prob friends/DIY that did it (like the lethal heating wiring) Don't get me started on...

What do i do about what other DIY owners have done before... ie my outside light i think it wired incorrectly and may not of be notified... Ideally i need the house testing/checking, advice, sorting and making up to date? or not? ... as per many homes im sure!

Lowering the tone are we! I see, off the top of my head my bathroom has no earth bonding as per it was built in 1976. :(

So to sum up for anyone reading this thread asking the same question as I; 1) 2.5mm spur from a 2.5ring main to socket or FCU is ok? 2) 4mm spur from a 2.5ring main to socket or FCU is ok? 3) To extend/add into a 2.5mm ring a socket or FCU with 2.5mm is ok?

I like to find out everything first before doing anything and will run it by an electrician in the family. In regards to notifying LABC, it would have to be done by or signed off by a qualified electrician?

Not very clear by me - Put it another way, what is limited/reduced in bathrooms to be safe (because of water) Amps or voltage, considering that the shaver socket runs 230v that is why i said is 1Amp OK?

Sorry, you are right I had missed that what Ricicle had said. Would It be ok to wire an extractor to this too? Hence why I wanted to know Amps so I don't overload anything. What I would end up with would be: 1.5T&E from a 10AMP MCB, then a FCU (3/5Amp) then a DP pull switch controlling the...

Thank you. So with the calculations in mind that means that the fuse in the FCU has to be sufficient for the Primary Amps? As for the electrician i spoke to - i should have worded it that he said he estimated it at less than 3amps without a calculator, saying it will be less on the input.

With the above in mind, i will fuse down at FCU and run a suitable MCB, but i still need conformation of how to work out the Amps on the transformer? 100w divided by 19v is not right if its 5.26 amps. Should be less than 1 surely in bathroom? Can't find anywhere online etc for a method. Even...

Hi. Update really from some tie ago. - I was right that the boiler was wired incorrectly. I had it serviced and not even the service guy spotted the mistake and was amazed that the last service guy from that same company didn't die! It was a death trap!!! With the help of an electrician and...

I can see everyone's view point here, as an outsider looking if if you will. From what I have been told as a novice (don't take anything i say as correct just a view point) would be to use 2.5. In terms of derating to 20amps MCB because of using 2.5 on the spur I can see why people would...

Indeed, i notice my garage has a short ring with 2.5 cable direct from the CU, no problems there but it then has a 2.5 spur to a 3amp FCU for the lighting. As you say works but not ideal under safety/fault conditions (if the ring wasn't complete etc). Far better to treat it as a 4mm radial...

Been in my house over a year now, Have an outside light that comes off the ring main as a spur from the hall, up the wall to a 3map S/W FCU. I would put money on taking off the covers to find 1mm cable from the ring....! Many many things even i know are wrong i have had to alter from previous...

Very sensible advice there! Not the best way i know, and 4mm the safest that's for sure. Aslong as 2.5 is safe. Thanks.

Thank you. so to confirm the 1.5 cable is rated at 15amps, but the reason it has to be 2.5 is that it's a spur from a ring (32).

Good morning. Yesterday I was asked by a friend to help him wire a few connections in his shed. To cut a long story short he has 2 single sockets wired in a ring from an RCD in the shed. He wants to come off one of these to a FCU and then wire from this with a 3amp fuse to a light via a...

Hi, thanks for the reply. I think what throws it on first impression is the ancient style of the rose and terminals. As suggested one could be the last on the loop-in system - or both if the wiring has been done in such a way (two in one room)? I thought that on that age of house it would...

plus does this way of wiring have a name because it is different from both loop in and junction box systems?

Unfortunately I was only able to run the 1.5 T&E cable (put in while I rewired my central heating) 10amp MCB should serfice.

What I want to confirm is that you work out Amps that a transformer uses the same as a non transformer item. My power shower runs off 220-240volts input transformer, and says it outputs 100W 19V = 5.26AMPS? The reason; I'm fitting a separate MCB in my consumer unit for my power shower...