Obelix Posted February 17, 2017 Share Posted February 17, 2017 Its not a new house but the shower is newly fitted before we moved in. So it should be up to 17th ed then. As long as you dont go above the current rating for the MCB that it is fed from you will be OK as the cable will take it. Do you know what the MCB feeding it is? Link to comment Share on other sites More sharing options...
butlers Posted February 17, 2017 Share Posted February 17, 2017 An 8.5 kw will provide a good shower.. It's the one we have in our let's. No electric shower can match a combi. I am selling several Triton showers from a job lot, for about half the shop price.If interested call me either Sat. or next working week, 07510466579 Link to comment Share on other sites More sharing options...
Bargepole23 Posted February 17, 2017 Share Posted February 17, 2017 If thats installed in conduit in wall as is very likley then thats only 43A for the cable. Since the shower will pull 41A on design you are a bit close - 16 sqmm cable is more appropriate. Unless the cable is running through insulation then 10mm is perfectly fine. No reason to go up a cable size just because it's close to the design current. As long as the design current is less than the protective device rating, and the cable is suitably sized for the protective device, all is well. Link to comment Share on other sites More sharing options...
carosio Posted February 17, 2017 Share Posted February 17, 2017 One advantage in having a budget shower is that if a main component should fail beyond the guarantee, it will be cheaper to replace than an expensive one which, if that should fail, will cost an arm and a leg to get fixed or replaced. Link to comment Share on other sites More sharing options...
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