9.5kw

Our old Triton T80 7.5kw shower is due an upgrade. We've had it over 10 years now, but it's never been particularly powerful, and also it tends to randomly go cold mid-shower for 15 seconds, before suddenly ramping up to scalding hot for another 15 seconds before resuming normal temperature...

Hi I've currently got installed an 8.5kw shower, on 10mm wiring clipped to the inside of stud walls. It's on a B40 MCB with a 30mA RCD. The stud walls may have some sound deadening material in them from what I can see, and the cable run is around 10m. The shower has started to misbehave and...