Sub Mains Presentation

[EddieB]

Guys
The customer wants the meters moved outside to a flush mounted Meter Box, I'll have to install an armoured cable from the existing consumer unit to the box, UK power Networks want a 63A Rotary switch installed within it terminate the SWA at the Switch and leave 25mm tails hanging out. They insist on a 63amp Switch I think I'll struggle with a 25mm SWA, advice please.

 

[cprfenom]

I would question why they insist on a 63Amp rotary switch. Its obvious why they want 25mm2 tails, so I would challenge them and suggest 100Amp

 

[Sintra]

Are you sure they don't want a 63A switch fuse installed? Normally they require you to supply overcurrent protection to a sub main. If this is the case then you should be able to reduce the csa of the cable depending on length etc.

 

[Dave OCD]

Surely they mean 63a as a minimum ? And why a rotary switch ?

 

[Leesparkykent]

I would of thought they would of wanted a switch fuse depending on the length of run of SWA.

 

[londonlec]

I had this recently with ukpn and fitted a separate surface meter box next to theirs (it was out of sight), with an 80a wylex switchfuse in, with 16mm swa out the bottom.
They seemed fine and didnt ask for certs.

 

[davesparks]

I had a meter moved by ukpn a few weeks ago. None of the paperwork they sent through asked for a rotary switch, it just said that an electrician should install the necessary sub main and the switchgear for it must go in the too right quarter of the meter box.

 

[sammyshooter]

I've always found that when they turn up to do their work, they don't care. I will always do what I feel best and they've never said they wouldn't do it. They don't even notice half the time!