Shower, what cable size and braker?

[Stephenmunt]

Hi guys. I was wondering what size cable and braker I'd need for an electric shower.

Just out of intrest am I close in guessing as follows:

The shower unit is an 8.5kw. Total meters to C/U is about 15meters. 10mm cable, 40A fuse. the cable will be solely for the shower supply, and RCD 1way consumer unit will be put in the attic above the bathroom, leading to a single or bouble? Pull cord and then to the shower.

OK how bad was my guess? Lol

 

[mainline]

Still not 10mm, but...

Here's the post with image. While detail is difficult to ascertain, the line conductor certainly appears to be solid. Looking further into this, it's quite clear the connectors are 221-412 from data printed on them, which would accept a maximum of 4mm CSA.

I probably should have added this three weeks ago and saved you some time.

Bad brakers of is there something else | on ElectriciansForums

Find Bad brakers of is there something else Advice and Help. How-to Bad brakers of is there something else in the UK Electrical Forum advice boards on ElectriciansForums.net | Free Electrical Advice - Electricians Forums: Electricians' Talk Forums. Bad brakers of is there something else on...

www.electriciansforums.net

Conductors don't look solid to me.

And I can't see 221-412 they could be 221-612 which take 6mm


Don't actually know how i got to reply as i was looking at new posts.

 

[nicebutdim]

Conductors don't look solid to me.

And I can't see 221-412 they could be 221-612 which take 6mm

They can not be 221-612 as they're printed with data found on 221-412. If you don't believe me take one of each and compare, but this point isn't up for argument as the image is clear enough to rule out any debate.

If we look back in the other thread it was made clear that the cable in question is supplied from a 16A MCB, from which the outgoing cable has an outer sheath identical in size to that seen on a solid core cable supplying a ring final circuit.

Furthermore, this is a needless distraction from the point that the cable isn't 10mm as OP believed. If you want to argue this further, then start a new thread and don't risk leading someone to believe it's fine to whack a 10.8kW shower on the end of this cable.

 

[littlespark]

OP hasn’t replied to either thread since 6th September, where, on the other thread, he has fully accepted the cable won’t take a shower…


If he’s a trainee, I’m sure one of the first things you learn is that sizes are in CSA, cross section AREA, and written in mm SQUARED.

 

[Yellowhammer]

Not to flog a dead dog, but my gut feeling is that cable at a glance, looks like 2.5.

Thread appears to have run it's course but as constructively as is possible, based on everything contained OP should not be doing this work themselves!

 

[mainline]

Furthermore, this is a needless distraction from the point that the cable isn't 10mm as OP believed. If you want to argue this further, then start a new thread and don't risk leading someone to believe it's fine to whack a 10.8kW shower on the end of this cable.

nobody led them to believe it was 10mm in fact it was the opposite stating that the maximum it could be would have been 6mm