Hi there,
10 years ago we had a 10KW shower installed using 10mm cable with a switched 40A MCB (Wylex). The installation was signed off by elec. board. I'm in the process of replacing with 9.8KW Mira Azora.
1) Now, am I ok leaving the 40A fuse with a new 9.8KW shower? (The ratings on new...