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Howdy.
We have an old Mira pumped electric shower, it's not mains fed but gravity fed and it's kaput. The only available replacement is an 8.5KW model.
The supply cable is 6mm multi-stranded and about 15m long clipped direct up to the loft and then dropped down in pvc trunking to the shower. It is fused at 32 Amps.
My question is would an 8.5 KW shower need a 10mm cable or would we be able to use the existing 6mm?
I have read the OSG and it says that 6mm cable can carry up to 40 Amps depending on method of installation.
Also bearing in mind our supply is 240 Volts and not 230 volts as the shower manufacturer assumes.
Any advice would be appreciated.
Thanks.
We have an old Mira pumped electric shower, it's not mains fed but gravity fed and it's kaput. The only available replacement is an 8.5KW model.
The supply cable is 6mm multi-stranded and about 15m long clipped direct up to the loft and then dropped down in pvc trunking to the shower. It is fused at 32 Amps.
My question is would an 8.5 KW shower need a 10mm cable or would we be able to use the existing 6mm?
I have read the OSG and it says that 6mm cable can carry up to 40 Amps depending on method of installation.
Also bearing in mind our supply is 240 Volts and not 230 volts as the shower manufacturer assumes.
Any advice would be appreciated.
Thanks.