10.5kw shower wired in 10mm twin n earth on a 40A breaker a problem

[davesparks]

No it's for better water delivery these can pump 8 liters per minute

No they don't, these showers don't have any kind of pump in them, they operate purely on mains pressure.

 

[HappyHippyDad]

I can't believe no one jumped down the OP's throat. He's gone now so it won't offend him to say 'what a scary post!'

 

[littlespark]

I can't believe no one jumped down the OP's throat. He's gone now so it won't offend him to say 'what a scary post!'

I think someone did on page 1..... something about a DI not having a clue...

It’s probably ok for the time the shower is running, but over time the breaker will get tired