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Yes, this can be done, You could fit a junction box to the wiring feeding the light (fitted inside the property) Alternatively you could fit an outdoor JB where the supply cables exit the wall, then run separate cables to your original light and your new one. There are other possibilities but...

We'll strictly speaking maybe, but it can generally be accepted that 6mmsq is rated at 40A in a domestic installation. Also taken into consideration the very short run in this case, 40A is quite safe in my opinion. out of curiosity, what is the MAX rating for 6mmsq in other installation...

Generally speaking the max loading for 6mmsq T&E is 40A about 9.5KW 10mmsq T&E is rated for 45A. Your cooker is as you say an appliance which potentially be loaded to 90% or more and so it is advisable to fit an MCB rated at the full load of the cooker. MCB's ARE available in 45A, but you...

it's just it is difficult for sombody to say without being able to see the installation in full :)

perhaps your best option here is to have a basic test and inspect carried out by an electrical contractor in your area

I accept your point luap2411, although i familiar with EN60439(3). CU's for use in commercial and industrial premises here must be to that standard. 63A CU's incidentally are on the way out. New ETCI rules to be introduced shortly will see all domestic CU's up rated to 100A in domestic...

A generally accepted figure for the life of a domestic installation is 25 years. although this is not absolute. Someone from the U.K. will be able to give you a better idea of the state of the installation of this age, however my openion would be that it will require a rewire shortly.

MCB stands for Minuture Circuit Breaker. It protects against overcurrent just like a fuse. They are rated in different sizes which are slightly different to the old fuse ratings. 6A, 10A, 13A, 16A, 20A, 25A 32A 40A 45A. There are other ratings available on order but are not applicable to...

Wiring a 9.5KW shower (or any shower for that matter) to a lighting circuit is absolutely OUT! This shower should be wired with 6mmsq T&E cable protected with a 40A MCB or ideally a 40A RCBO at the CU. It must be installed on it's own radial circuit supplying nothing else. Are you sure you...

to be honest this is not a major issue. Yes ideally all the MCB's RCD's RCBO's etc. would be by the same manufacture, but provided the MCB's are of good quality and fit properly on the busbar, this should be acceptable in a domestic installation.

post was supposed to go somewhere i'd imagine :!:

OK, You have a 10KW shower and 10mmsq cable from the CU to the DP ceiling switch and another run of 10mmsq from this switch to the new shower. I immagine your problem here is that the MCB is simply underrated (too small) You should have a 45A MCB installed here for your new shower and your...

Now were getting somewhere :) Your on the right track just one more question. Did the shower which you removed, the 9.5KW work properly

What is this? A joke? :lol: :lol: :lol: :lol: :lol: :evil: It was a 9.5KW 5 minutes ago that had be there for "several years". What you speak of here sounds very much like an overload. You should really have 10mmsq cable protected with a 45A MCB. BUT, you really need to clarify all...

A 9.5KW shower supplied with 6mmsq cable protected by a 40A MCB is, in practice acceptable provided the run isn't phenomenal. But this is really on the upper end of compliance. 16mmsq T&E for a shower in domestic? I think NOT :!:

Richard, are you 100% sure that this is a 9.5KW shower. This should be drawing 39.5A minimum. Therefore the breaker was way undersized and basically the whole thing dosn't add up. NOTE MY COMMENTS IN YOUR OTHER TOPIC :)

richard, please note my comments in your other seperate topic. It would be better if you could manage to post only once, this helps keep things together. Perhaps DIYNOT could move these posts to the other "seperate topic" so as to save us getting lost.

There are many possibilities here. Replacing the cable was probably not required, a simple test could have confirmed this. The problem most likely lies with the shower unit itself. If this is the case it needs to be replaced, servicing/repairing these units is uneconomical. Please answer the...

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