Moving Consumer unit

[daiplayer]

Had a call regarding the movement of a CCU.

The consumer unit is currently located in the kitchen , high level.The main income located in a cupboard about 1m away.PME system , 16mm tails.

It is to be moved. approx 7m away ( under the stairs).

1-)Is there any way the customer can get the main income moved for free since it is found in a special location ?
2-) if not - when moved 7m away , what do i need to do regarding tails/rcd/protection etc.
To my knowledge tails longer than 3m must be RCD proteced. in this case would it be an s type 100m/a in order to meet discrimination between the RCD's on new board ? do the tails have to be enclosed in conduit ? as they will be drilled and run through floor joist ( more than 50mm from surface)

Im asking because the sutomer wants an accurrate 'quote'
Any advice on this would be MARVELOUS

Thanks all

 

[the pict]

I think depeds on where you are and what planet the DNO are on, I work to this if its to be moved its the DNO, if I need the tails extended then it's 25mm and a 100A SFU at 3 metre then the rest to the CU, my own home had 16mm T&E which wound its way over 20 Mtr through wall cavitys and the DNO guys said what you do is up to you but they did fit an iso for me so I didn't have to pull the fuse but talk to the supplier first
Pict

 

[Plonker 3]

A kitchen isn't a special location. To have it moved would cost money.

As said you would need to fit a fused switch upto 3 meters away from the head. How you run to the DB it is up to you, a SWA cable would bypass the need for RCD protection.

 

[Guest123]

Had a call regarding the movement of a CCU.

The consumer unit is currently located in the kitchen , high level.The main income located in a cupboard about 1m away.PME system , 16mm tails.

It is to be moved. approx 7m away ( under the stairs).

1-)Is there any way the customer can get the main income moved for free since it is found in a special location ?
2-) if not - when moved 7m away , what do i need to do regarding tails/rcd/protection etc.
To my knowledge tails longer than 3m must be RCD proteced. Not RCD protected but , additional overcurrent protection via a switchfuse for example. in this case would it be an s type 100m/a in order to meet discrimination between the RCD's on new board ? do the tails have to be enclosed in conduit ? as they will be drilled and run through floor joist ( more than 50mm from surface)

Im asking because the sutomer wants an accurrate 'quote'
Any advice on this would be MARVELOUS

Thanks all

The DNO won't move the service head for free, it'll cost for sure.

Other than that, check earthing & bonding as a matter of course.

 

[malcolmsanford]

Had a call regarding the movement of a CCU.

The consumer unit is currently located in the kitchen , high level.The main income located in a cupboard about 1m away.PME system , 16mm tails.

It is to be moved. approx 7m away ( under the stairs).

1-)Is there any way the customer can get the main income moved for free since it is found in a special location ? Highly unlikely the DNO would do anything for nothing even if it was a special location and it's only a special location as per Part P nit the regs

2-) if not - when moved 7m away , what do i need to do regarding tails/rcd/protection etc. You only need to give the tails RCD protection if your requiring additional protection, such as if they are buried and do not have earthed/mechanical protection. As it is a PME and not a TT earth you could get away easily with just a switch fuse

To my knowledge tails longer than 3m must be RCD proteced. in this case would it be an s type 100m/a in order to meet discrimination between the RCD's on new board ? do the tails have to be enclosed in conduit ? as they will be drilled and run through floor joist ( more than 50mm from surface) Your earth system is PME so forget the S type RCD. Yes you could enclose the tails in conduit/trunking are you burying them? There is no call in the regulations that cable running under floors need RCD protection, look at regulation 522.6.100

Im asking because the sutomer wants an accurrate 'quote'
Any advice on this would be MARVELOUS

Thanks all

......................

 

[daiplayer]

no its not a special location ( how thick do i feel)....( sorry didnt explain) . The income and conumer unit are found directly under bathroom and you can see where water damge has occured near the ccu. hence the concern from customer.

So :- basically , if the tails are drilled through floor joists - ( buried more than 50mm ) no rcd needed.
- Switch fuse provided at the income for the tails. ( could someone please explain the reason for this? - if the fuse is 60A ( same as DNO main fuse ) what difference deos it make other than having a swtch? reg possibly?isolation ?


Once again guys thanks for the input. much appreiciated.

 

[malcolmsanford]

Your relying on the DNO main fuse to give you overload/fault protection on our tails, and they are happy to do this providing those tails do not exceed a certain length, normally 3 metres, but it can sometimes be a little more, up to 5 metres in some cases, but the 3 metre length is a rule of thumb. Anything exceeding this the DNO wants you to protect the tails, hence the switch fuse.

You do not need RCD protection for tails for cable under floors, have a look at the regs I posted. If you have a TT system then most likely yes, but that is to do with disconnection times and not protection of the cables. You have a PME system an so RCD protection is not needed for them

 

[daiplayer]

Awsome !!! all clear now . Thank you all .

hope more people will read this post as is it full of useful replys.

 

[sedgy34]

you got no chance the dno moving the incomer unless you pay them special location or not they arent in the scope we have work too
if you extend tails you will have to fit a kmf to suffice the regs if your tails go in a chased wall fit some steel channel 3mm thick

 

[nickblake]

last supply i had moved was in a bathroom of all places so i got it move to an outside wall box all for a small sum of £875.00 inc VAT

 

[Knobhead]

Ponty was quoted £750. I suppose VAT to be added.

 

[GT1]

Surely the way forward is to deal with the water leakage ?
You can spend an awful lot of money with the DNO moving the intake for you, then the CU and all the messing about with the tales. But the bathroom will still be leaking ?