7.5kw shower

[greasemonkey]

Currently has 6mm T&E feed from a 32A MCB
I need to replace the shower, but does my current setup need upgrading?

 

[rich.250]

Need to know more details before I can help you.
Length of run, new shower size, where the cable is installed.
Rcd protection?

 

[dook]

Would depend on the load of the new shower.

 

[dook]

.....as well as what rich.250 says!

 

[greasemonkey]

Need to know more details before I can help you.
Length of run, new shower size, where the cable is installed.
Rcd protection?

New shower 7.5kw
Run 10M
Cable run is under ground floor, all accessible from cellar.

Thanks @rich.250

 

[greasemonkey]

Sorry
No RCD

 

[Edd]

7.5kw at 230v == about 32 amps, and as the shower aint gona run all day, im gona go out on a lim and say its fine with what you have discribed. BUT!!! you will need RCD protection, no ifs no buts an RCD is a must...

 

[telectrix]

replacing shower on it's own . test the existing cable. if it is all sound, then no need to upgrade. RCD protection should be fitted , even if only a like for like replacement.

 

[rich.250]

Most showers are calculated at 240v
So i would estimate its a 7.2kw
So 31.25 amps.
I would say it sounds ok from the info on here.

 

[rich.250]

RCD a must

 

[telectrix]

i don't think there is a reg. in BS7671 re. RCD on a like for like replacement. however, the manufacturers instructions usually specify RCD, so that means you fit one.

 

[rich.250]

That was my thought telectrix

 

[Edd]

yer but im sure even if there aint no reg, if just replacing the shower it would make you sleep better at night and im sure you will be taking responsibility for the install so it should really need to comply..

 

[telectrix]

well. i would fit RCD, even if it meant fitting a stand alone unit next to CU ( assuming CU was rewireable 3036 fuses)

 

[SPARTYKUS]

Whats the actual voltage on site? Could be 223 or 254....