Shower

[thepurple1]

Hi
I would like to fit a 10.5KW shower the mcb is 45Amps
doing a calculation 10.5KW @ 240V= 43.75A
10.5KW @ 230V = 45.65Amps would this be enough over current to cause nuisance tripping on a 45A breaker

 

[Plonker 3]

Look at the curves in the back of BS7671 for the OCPD you will be fitting and see how long it take for .65 amp to cause it to trip out.

 

[telectrix]

then come back in 2525.

https://www.youtube.com/watch?v=izQB2-Kmiic

 

[Octopus]

and then look and see how many 45A MCB's you can find!

 

[Plonker 3]

and then look and see how many 45A MCB's you can find!

What like all these?

 

[telectrix]

or these if he wants the retro look.

WYLEX 45 Amp Plug-in MCB With Base | eBay

 

[Octopus]

What like all these?

Exactly - a real variety of new and old and would they fit in the board he's intending to update?

 

[telectrix]

from the OP, it seems like the MCB is already in place. i read it as a shower replacement . no mention of cable size though. installation method and length of run would determine whether a 6mm would do the job.

 

[Octopus]

from the OP, it seems like the MCB is already in place. i read it as a shower replacement . no mention of cable size though. installation method and length of run would determine whether a 6mm would do the job.

Or RCD's

 

[telectrix]

RCD = Real Cold Dowsing?

 

[davesparks]

Hi
I would like to fit a 10.5KW shower the mcb is 45Amps
doing a calculation 10.5KW @ 240V= 43.75A
10.5KW @ 230V = 45.65Amps would this be enough over current to cause nuisance tripping on a 45A breaker

If it's 10.5KW at 240V then it isn't going to be 10.5KW at 230V is it?
I'd suggest you read the spec for the shower again.

 

[Guest77]

Hi
I would like to fit a 10.5KW shower the mcb is 45Amps
doing a calculation 10.5KW @ 240V= 43.75A
10.5KW @ 230V = 45.65Amps would this be enough over current to cause nuisance tripping on a 45A breaker

What size cable have you got in? or what size are you intending to put in? Volt drop? Method of installation? Earthing arrangement? Main equipotential bonding? Rcd? Regarding energy saving will a 7.5 kw surfice?

 

[telectrix]

they all surface. never seen a flush one yet.

 

[D Skelton]

Hi
I would like to fit a 10.5KW shower the mcb is 45Amps
doing a calculation 10.5KW @ 240V= 43.75A
10.5KW @ 230V = 45.65Amps would this be enough over current to cause nuisance tripping on a 45A breaker

Gotta say, and I'm sorry to have to put it so bluntly, but never before have I seen such a blatant display of 'fail', never in all my life! Lol

If the shower says 10.5kW at 240V, how on earth is it going to be 10.5kW at 230V???

I suspect given your profession that you're not a moron and that really this is just a brain fart of epic proportions on your part. Don't worry, we all have them, myself included. One thing I would say, in my experience, it always helps to go back to basics!

Ohms law is your friend!

 

[SPARTYKUS]

What size cable have you got in? or what size are you intending to put in? Volt drop? Method of installation? Earthing arrangement? Main equipotential bonding? Rcd? Regarding energy saving will a 7.5 kw surfice?

Got a 6.9 at our place and its wicked man wicked.

Mind. We do have 6 bar of water pressure hahahahahahahahshahahahshsshshshh


Iapologicse in advance I am doingdry januar y but have the day off

 

[Silly Sausage]

Got a 6.9 at our place and its wicked man wicked.

Mind. We do have 6 bar of water pressure hahahahahahahahshahahahshsshshshh


Iapologicse in advance I am doingdry januar y but have the day off

You won't be laughing so much when you're having your hot passionate power shower with yers bird when I sneak round and kill your power.
That's while I've previously locked you in there.