showers

[tell12]

I AM FITTING A 8.5KW SHOWER WITH 10mm CABLE, CAN I USE A 32A FUSE OR SHOULD I USE HIGHER

[New2Game]

Taking into account for diversity, 32A will be fine

[Pens]

8.5kw = 36.95 amps and you can't apply diversity to a fix load

You will need a 40amp MCB if you want a hot shower

[tell12]

THANKS BOTH, NOW I'M REALLY CONFUSED

[Pens]

Caps=SHOUTING...please don't shout

Why are you confused? You need a 40amp MCB...do the maths

8500watts / 230volts = 36.96 amps so a 32amp breaker is to small

[tell12]

sorry for the shouting,

pensdown, thanks for the advice will buy 40a fuse in morning

[jondiy]

You should also ensure you have 30mA of RCD protection!!

35 or so Amps of Current - and Lots of Spraying Water = Potential Risk of Shock.

Fit your MCB to the RCD side of your consumer unit (if it has one), failing that, add a 40A 30mA RCBO (if you can get one that fits!) - or if not then fit a seperate shower CU by taking a 40A feed from your current CU , or if you can't do that then split the tails before your consumer unit and add the shower unit using Henley service blocks!

The bathroom is a special location - do you know this work should be notified to the council and also any work should be checked & tested.

Are you up to the job?? Are you also aware that if you don't have it tested then peoples lives are at risk , can you live with yourself knowing somebody electrocute themselves because your setup (FUSES!!!!) may not disconnect from the supply within the times specified by BS 7671 (0.4 seconds or 5 seconds!! - equipment dependent.

Why not get a spark in, ask him if you can run the cabling etc (under his supervision/guidance) - then get him to do the final connections and issue you with your test certs etc!

Would be worth it in my mind! But its up to you - your house!

[securespark]

New2Game wrote:

Taking into account for diversity, 32A will be fine

Please don't post anything unless you are sure it is correct. It is very misleading, and confuses DIY'ers no end.

Who taught you that diversity can be applied to a fixed load? They want shooting, and you need to go back to college!

__________________
As George Michael once said, "..if you're gonna do it, do it right, right?"

[Steve]

securespark wrote:

New2Game wrote: Taking into account for diversity, 32A will be fine Who taught you that diversity can be applied to a fixed load? They want shooting, and you need to go back to college!

well, if you average out the load the shower draws over a period of time, a 6 amp MCB would be plenty sufficient

[mini2]

jondiy wrote:

You should also ensure you have 30mA of RCD protection!! 35 or so Amps of Current - and Lots of Spraying Water = Potential Risk of Shock. Fit your MCB to the RCD side of your consumer unit (if it has one), failing that, add a 40A 30mA RCBO (if you can get one that fits!) - or if not then fit a seperate shower CU by taking a 40A feed from your current CU , or if you can't do that then split the tails before your consumer unit and add the shower unit using Henley service blocks! The bathroom is a special location - do you know this work should be notified to the council and also any work should be checked & tested. Are you up to the job?? Are you also aware that if you don't have it tested then peoples lives are at risk , can you live with yourself knowing somebody electrocute themselves because your setup (FUSES!!!!) may not disconnect from the supply within the times specified by BS 7671 (0.4 seconds or 5 seconds!! - equipment dependent. Why not get a spark in, ask him if you can run the cabling etc (under his supervision/guidance) - then get him to do the final connections and issue you with your test certs etc! Would be worth it in my mind! But its up to you - your house!

you know your stuff mate giving suggestions on many ways you can wire up a shower.
Guess your very well up in house bashing
A property Developers ideal sparky- Everything is possible



btw the way i work out amps is 4amps to 1000watts very quick and simple way if you aitn got a calculator to do watts/230 volts