I am putting a 9.5kw shower in my house, I currently have a 30amp cartridge fuse can I replace this fuse with a 45 amp cartridge fuse and change my wiring to 10mm back to the fuse box?
shower
- Thread starter PaulT123
- Start date
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9.5 KW is about 40A therefore i would strongly recommend fitting a single module with a 30mA RCD complete with a 45A BS 60898 MCB ( This must have 10mm cable) BS88 or BS1361 cartridge fuses are not great for showers as the give no protection agains earth leakage 
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