Hello folks, we have a shower which has an Opus 4 electric unit on the wall. It went bang the other day (literally) and tripped the dedicated 30 amp circuit breaker for the shower. There is no information on the Opus 4 on the 'net so I emailed the manufacturers who mailed back today (impressively promptly) with the specs. 7kw, 1 bar minimum. The shower hasn't been made for several years. The cold water supply is from a pipe which is about 10mm in diameter. There is no sign of an electrical cable as it's been tiled in, but there is a separate pull chord in the ceiling with an amber light which, after the circuit breaker was reset, does come back on. The shower also still pumps water out, but doesn't heat it any more. The closest source for the electricity supply is a next-door-but one boiler room which has a dark grey rectangular cable, about 9mm x 5mm which disappears into the wall up high in the direction of the shower. The water pressure is good. So my question is whether a 7.5kw replacement shower (don't seem to be able to get lower than 7.5) would be ok, or whether we could even step up to a higher powered one. I would want a decent shower as it's used daily by the family. I do want a thermostatic shower. Thanks for any advice you can give.