Cable Calc

[Mark.W]

Evening Gents

I don't have my regs book with me at the moment and was wondering if one of you kind people could help me out with this cable calc?

I am busy rewiring a house that is currently on a TT system. The owners want the meter moved to the other side of the house, but Southern were out today and said it was not possible and the meter would have to stay where it is. Seeing as I have all my cables in already to where the customer wants the board, I have no option to make it a submain.

Now, I intend on running SWA from the meter to the new board which is about 20m in length, the cable will be clipped direct, In is 100A, Ib would be no more than 80A.

I think 16mm2 should be ok, but just want to check!

Cheers chaps

Mark

 

[bugsy]

16mm 3c swa wiil be fine

 

[Spudnik]

Dont forget your switchfuse.

 

[Mark.W]

I was hoping to use 2 core and the armour as CPC, just to save the customer some dosh. Will this be ok?

 

[Spudnik]

Use 2 core and sep 16mm earth.

And yes, bond the SWA too.

 

[Mark.W]

Thanks mate

 

[pennywise]

I would be putting 25mm in, personal preference