My 8.5kw Mira shower packed up after 12 years so got a replacement Triton Cara 9.5 kw. However it kept tripping the fuse at the fuse box every few minutes. I rang Triton and was told that the shower needs a 40 - 45 amp fuse. I have a Wylex CU - is it safe to replace the 32 amp fuse with a 40 amp...
