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First step - Speak to your builder, was the electrics for the building included in his qoute? and he was then paying a spark? If yes then he needs to get a spark who is registered and competent to do the work and who can supply you with certificates after completion. If he is unwilling or...

Garage consumer unit could be an option. Maybe run this from a spare way in your house CU and then have seperate lighting and sockets running from the garage CU. Is the garage attached to the house? Or, you could extend the ring that you have to include the garage. This depends on the loading...

Holmslaw wrote Not offended so no apology needed. Its interesting though to see how we all have differing idea's and interpretations of the regs. Regards.

I will certainly look into those ericmark, thanks for your input. Its been an interesting topic though with mixed views. Thats the benefit of having the forums i guess. Regards.

holmslaw wrote: I dont know if that is aimed at me or anyone else who's posted but whats wrong with discussing the merits of an installation? Come on holmslaw, maybe a good idea would be to climb down off your high horse and just stick to the topic instead of making things personal...

Had some more thoughts on it today and flicked through my regs. If we look at the definition of a circuit ''An assembly of electrical equipment supplied from the same origin and protected against overcurrent by the same protective device(s)'' Note the (s) on the end. This could be our...

Ricicle wrote That is how i understand it too, same as any other 3 phase system which might be unbalanced.

Dam quote button! :oops: Yes i agree regarding the switching. Although the mcb's were confirmed to me by the manufacturer as suitable for functional switching so technically ok. I hate to see them used as such though so seperate grid switches were in the mind to be fitted into the...

Coljack wrote although it has a means upstream of the CU, you could likewise argue that the large isolator in the local substation makes it comply as that disconnects all the line conductors... if it's not in the CU that houses the breakers, or is indeed the breakers itself, then it...

Flameport wrote: But isnt this true of other TPN circuits which we deem compliant? I knew this one would cause some debate :D . Its a funny one because in some ways its no different to other 3 phase neutral circuits imo, yet i do agree that it would be better off as 3 phases and 3...

Coljack wrote: The TP breaker is in a board in a different workshop to the mini CU, yet only about 15 metres away. The 'mini cu' as i have called it doesnt have a TP isolator no. Just an enclosure with 3x single pole 20A mcb's in (they are also been used as the functonial switches)...

RF Lighting wrote Not got my book on me but 7671 does state that the setup i describe is compliant, or it does to how i interpretted it. I did only read the reg once however so might stand to be corrected. I'll find the reg out tomoorow. There was another reg (559........something)...

Not exactly DIY guys but something ive come across and would appreciatte some comments from anyone who has experience of such circuits. Been reading posts on the net and other forums regarding the subjetct. The situation i have encountered (which im on with doing some planning for) involves...

We love pictures! :lol:

Axel wrote I never said 2.5 wouldnt be suitable, neither did i suggest fitting a 'narrower' cable. What you have to consider though is other factors such as load, volt drop, diversity, earth fault loop impedance. If you read the original post the poster says a 'concrete shed' which is...

axel wrote No offence but most of this is a load of carp. 2.5mm sized cable might be suitable, then again it might not-there are many more factors to consider before you can confidently state a cable size. You do NOT necessarilly need rcd protection on the cable to the shed, again, other...

Scousespark wrote Thats a bit harsh isnt it? I understand where your coming from in that a new leg of cable is better than crimping but its not always possible to avoid crimping. There is nothing wrong with a correctly crimped joint.

You can run from the spare way in the CU yes................but are you aware of part P? 40A breaker? No good if you have a cartdrige fusebox. The breaker rating at the CU end would be dependent on the cable size you are running to the shed and the installation method used. 6A breaker...

Post some more pics of your service head and meter. Also a snap of the 3 phase board and whole setup would be usefull for us to make any further recommendations.

Coljack wrote: 7omkin wrote: This doesnt imply that to me though to be honest, it implies that he is planning to move the meter himself.