Cable Gona BE Prob??

[charliefunkuk]

Firslty thanks to everyone who has replied to my previous posts, you have all been most helpful!!

I am running 25mm 3 core armoured from a 100A switch that is sited in my meter box to my consumer unit that is about 10 metres away.

Just thinking ahead I see problems due to the sheer size of the cable when terminating it at the consumer unit and the meter box end? Any suggestions or thoughs?

 

[Maxxy]

Shouldnt you be using meter tails rather than armoured cable? Or is there a big risk of mechanical damage, hence the armoured?

 

[Spark123]

If you do use armoured a metal CU is a good idea. A metal box next to a placcy CU is the 2nd option.

 

[Taylortwocities]

If you do use armoured a metal CU is a good idea. .

...unless its a TT installation..........

TTC

 

[Spark123]

An RCD would have to be installed before the armoured cabling for it to comply in a TT installation though

 

[RF Lighting]

Why not use split con?

http://www.batt.co.uk/products/index.asp?area=2&p1=20&p2=26&p3=616

 

[charliefunkuk]

nope the story is that the max tails i can have from the meter is 3 metres, my CU is about 9 metres away, so I have a 100amp switch mounted in the meter box that the tails will connect to. From the switch i am to take the 25mm armoured to the CU.

Sounds right , well thats what i been told needs doing, hope its right! )

And why the need to use a metal CU? was jus gona order a normal 12 way split load CU from one of the electricl factors

 

[RF Lighting]

You need to use a switch fuse, rather than just a DP isolator, so that your fuse protects your cable (not the DNOs fuse)

 

[RF Lighting]

Something like this is what you need.
Clicky

Having just a 100A DP switch is no different to wiring straight into the meter (Technically)

 

[charliefunkuk]

yep I have a 100amp fused switch!! £115 damn pounds worth <sulk>

still leaves me the problem of working with this damn 25mm stuff

 

[Maxxy]

Thats why a metal consumer unit would be good, so you can attach your gland tightly too it.

Only problem might be getting the cable into the terminals!

 

[RF Lighting]

If you use split con, you can use a standard insulated CU, and terminating will be no different to 25.0mm² tails.

Have a sniff around your local wholesaler, they may be able to find a cheaper one.

 

[charliefunkuk]

well I have already got the 100amp fused switch for the meter box (its metal!), all i need now is the CU. Just seen a deal here, was gona go for it........

http://www.screwfix.com/app/sfd/cat/pro.jsp?cId=A331829&id=64020

reason I need a new CU is cant get bits for my current one as its 20yr old

 

[Maxxy]

check out the "choice of CU (brand)" topic