Large electrical ufh install

[sclarkin]

You can only have a neutral of reduced csa if your line conductors are of a minimum csa of 16.0, copper conductor.

I won't be running 16mm for ufh
Good reference for future thanks

 

[westward10]

Interesting, I haven't really looked at it since I encountered 3 1/2 core SWA used for TPN quite a few years ago.

Can you still get 3 1/2 core SWA?

Never heard of it.

 

[sclarkin]

Interesting, I haven't really looked at it since I encountered 3 1/2 core SWA used for TPN quite a few years ago.

Can you still get 3 1/2 core SWA?

I thought I was getting old , never heard of that though.

 

[westward10]

Interesting, I haven't really looked at it since I encountered 3 1/2 core SWA used for TPN quite a few years ago.

Can you still get 3 1/2 core SWA?

Is this a three core with a half sized neutral.

 

[davesparks]

Never heard of it.

I've only seen it a couple of times, most recent was the local football stadium where they've got it feeding the four floodlight columns. 3x25mm (RYB) phases feeding 400V ballasts and a 16mm (I think) black core used as CPC.

 

[davesparks]

Is this a three core with a half sized neutral.

Yes, 3 and a 1/2 core SWA

 

[davesparks]

Is this a three core with a half sized neutral.

Found a picture

 

[westward10]

Never seen that looks like AWA.

 

[davesparks]

Never seen that looks like AWA.

Trust me, it isn't, it's SWA with copper conductors.

I reterminated 4 of them with a gland and acceptable earth connection to the armour.

 

[westward10]

Learn something new everyday but they look to the eye like sectorial aluminium with AWA in fact I'm convinced it is AWA.

 

[davesparks]

Learn something new everyday but they look to the eye like sectorial aluminium with AWA.

I know what you mean, but that was the second time I encountered this stuff. The first time I was a little perplexed and had to make a few phone calls.


In my vast experience of terminating just one sectoral Al armoured cable the armour was of a more rectangular section and not round like it is in SWA.

 

[westward10]

To my eye but you have physically seen it the outer face of the strands in the pic look flat which to me says it is not steel. Nevertheless I have never seen that before.

 

[davesparks]

To my eye but you have physically seen it the outer face of the strands in the pic look flat which to me says it is not steel. Nevertheless I have never seen that before.

Yeah its a weird one, if I remember I'll get some better pictures next time I'm there.