I need to replace my 8.5 kw electric shower, and am considering a 9.5 kw one instead.
Will the existing 6 mm twin and earth cable be OK?
Will the existing 6 mm twin and earth cable be OK?
What this forum needs is a SEARCH facility. This has been asked so many times.....
As long as the cable's clipped direct all along its route and not buried anywhere or covered by insulation then that's not the problem.
The only concern might be the breaker (you'll be taking 41.3A max through a 40A MCB) but I'd be surprised if it ever tripped.
How so? 6mm T+E is rated at 40A, a 9.5kW shower at 230v requires 41.3A, and that's before we apply any
How so? 6mm T+E is rated at 40A, a 9.5kW shower at 230v requires 41.3A, and that's before we apply any
6mm² is rated at 47A clipped direct.
Not quite - a 9.5kW shower is only a 9.1kW shower when supplied at 230V.a 9.5kW shower at 230v requires 41.3A
Not so - 6mm² is still used in abundance, and not just for showers rated at 7.0-8.5kW.In any case, 6mm really isn't practical for modern day showers.
a 9.5kW shower at 230v requires 41.3A
Not quite - a 9.5kW shower is only a 9.1kW shower when supplied at 230V.
Of course the supply voltage will be 240V, and that's why the current drawn will be 40.0A, not 41.3A.Agreed, if the element is rated at 240v and run on 230v, but it should still be treated as a 9.5kW shower as that is the power consumption stipulated by the manufacturer, and supply voltage is more than likely going to be 240v anyway.Not quite - a 9.5kW shower is only a 9.1kW shower when supplied at 230V.a 9.5kW shower at 230v requires 41.3A
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