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Yes certainly not 'D' (although you'd be amazed at how many people do!) - No job is worth risking your life like that for - also it's working live and is against the Electricity at Work Regulations (although, admittedly, EAWR does not apply to domestic works... hence Part-P)! The supplier...

I could understand that height on an existing rewire where the people comissioning the work are happy with it there. Big NO NO on a newbuild!... what if someone disabled, in a wheelchair and living alone moves in?

It's good that you want to go down official channels with Building Control... I have to warn you I have read about five posts recently with different building controls in different areas applying different rules! Hopefully, you'll have one of the more co-operative BC's! EDIT: One...

When I fit showers, I often have to do a small modification to the cold water feed. I like to use a soldered joint - it looks better and I believe it to be more secure. Pushfit is obviously more convenient and cheaper! I'd ask a plumbing forum as cold water feeds to showers is about as far as...

I think you are right Lectrician in that if it's a direct rewire then you can fit the new accessorys in place of the old ones (good for preserving decor!) - as you say if BC are heavily involved though...

I'm pretty sure Building regs specify fitting accessorys which need to be accessible between 450mm & 1200mm high! (Think it's under Part M but this is from memory only!)

I'm not sure if it violates any Building regs but it certainly is not allowed by BS7671 (which, unfortunately in this case, is not a statutory document) Seem to always be quoting these two regs but contravenes 130-07-01 & 314-01-01 for a start!

The OSG is mostly based on BS7671 with the recent addition of a few Building Regs - the Building Regs are not part of BS7671 but should be followed anyway!

Well what do ya know... it appeared as blue anyway! - piece of cake this forum lark! :wink:

No, it doesn't apply to smaller jobs - i'm not too experienced at posting on forums so I don't know how to make this appear as a proper link but you can copy then paste it into your address bar for a list of notifiable works...

Fair enough - I didn't realise you had previous experience. You may find it difficult to find an Electrician willing to certify the work as they will not have overseen all of the installation (you may have damaged the SWA prior to burying it etc). Your best chance is to talk to your Electrician...

Yes you need a certificate for this work. Unless I have misread, you wish to take your feed from the DNO isolator and then through a switch. If you mean a switch fuse then this would be ok otherwise your SWA will only be protected by the cut-out fuse!. No offence but it would be a lot less...

Fair point Adam!

'Mixing and matching of MCB's is not a good idea' Apart from the obvious fact that they look out of place, what is the actual harm in doing this (Provided the busbar connection methods were compatible as many are these days)?

If that baffles them then they shouldn't be 'qualified'!

In this life you get what you pay for... In an ideal world I would Crabtree almost everything but this is a bit too pricey! MK is a VERY GOOD compromise between price and quality and I use MK stuff a lot myself! In my foolish, younger days I used to buy the cheepest s**t I could buy but...

I'm wondering whether it is your RCD that is tripping (Main switch which may protect all or at least about half of the MCB's) or your actual MCB...

I doubt there would have been the need to export the equipotential zone to the shed as I very rarely see sheds with incoming metal water pipes (Assuming TN-C-S with exported PME)!

You cannot spur from a spur as the 2.5mm cable is not rated for the combined potential loading of several sockets... If you spur with a Fused Connection Unit then you may spur as many sockets as you wish from the load side of the FCU!

A Fused Connection Unit would allow the required isolation of the pump