11kw shower cable size?

[Chris14]

For 11kw shower what cable size is required for 15m run?

 

[Tim]

What reference method?

 

[telectrix]

6mm clipped direct just on the limit, but you'd need a OCPD of 50A, so 6mm is out of the equation. 10mm on a 50AMCB is your only choice.

 

[Outspoken]

11kW @ 230V = 47.8A
11kW @ 240V = 45.8A

Whichever way you look at it 6mm² will not be sufficient because the CPD will need to be a 50A MCB as Tel has already stated.

You need to state how the cable is run however, because the environment the cable is installed in dictates how much it is de-rated by, and you could end up with 16mm² if your running it in fully insulated spaces or in an environment subjected to external heating.

 

[Guest55]

good job its not 9.5kw , thats just asking for heaps of trouble.

 

[oldtimer]

GROUNDHOG DAY ? or is it just me ?

 

[Guest55]

i say 6mm.........
you say 10mm.........
i say potatoe.........
you say potaytow.........
lets call the whole job off , lol.

 

[telectrix]

more like apocolypse now. wait for the 10kW cooker cable questions.

 

[pennywise]

2, 4mm in parallel

 

[Outspoken]

Guys, what about this kiddy...

Redwing 12kW Shower

Personally I say 16mm² will be sufficient on a 286m run, but the Regs work it out to be a 120mm²...anyone any thoughts...Muhahahahahaha

 

[monkeyelectric]

Who in their right mind would want an 11kw shower?

 

[monkeyelectric]

Guys, what about this kiddy...

Redwing 12kW Shower

Personally I say 16mm² will be sufficient on a 286m run, but the Regs work it out to be a 120mm²...anyone any thoughts...Muhahahahahaha

I got asked to install one of those once and his "mate" who was an electrician but out of the country at the time said it could be spurred off the ring i couldn't see a problem and i only had 1.5 with me at the time so i used that, do you think it'll be ok? I did change the mcb to a 50A too cos it kept tripping that poxy 32A

 

[Guest55]

anything above 10.5kw is a complete waste of time......
why ?
cos its unlikely that you'll have water pressure high enough in an upstairs bathroom to match the flow rate available from the heating element.

thats todays technical insight out the way , its downhill from here on.
;-)

 

[Geordie Spark]

GROUNDHOG DAY ? or is it just me ?

Everyday is Groundhog day.

 

[chopper76]

Some of these showers are turning mental, it's got to get to a point when you can't really heat the water much quicker under standard water pressure?