Hi all iv just bought my first house and i renovated it before upgrade my 6mm cable for 10mm there was originally a 7kw shower installed with a 32a rcd, will it be ok to upgrade to 8.5kw shower without having to change the t/e the shower room is downstair and runs 1m thru trunking from the shower then 5m under floorboards not clipped and no insulation then 2m in a wall to the main fuse board also whats the best shower i can get in 8.5kw with good performance ??
Shower recommendations ??
- Thread starter Leejay1974
- Start date
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So you have 6.0mm t&e cable and a 32A RCD, what size is the overcurrent protective device/MCB? As the RCD alone, is not an overcurrent protective device!
I would use 10mm in any case unless the 6mm was in open voids (eg, not confined in trunking) for it's entire run.
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Would still require an overcurrent protective device, which is a major concern if not present!
6mm in containment can carry a maximum 38A, so 32A at 240V could allow for 7.6kW and at 230V 7.3kW, so anything greater is not going to happen anyway. So the 8.5kw can go back!
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