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9kW shower wiring.
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<blockquote data-quote="alcazar" data-source="post: 469676" data-attributes="member: 30560"><p>Hi all, first post, so please bear with me.</p><p></p><p>Some years ago I fitted an electric shower in my youngest son's bedroom. It has a ceiling pull switch outside the shower.</p><p></p><p>Shower is 9kW.</p><p></p><p>It was wired with 6 sq mm cable. It has always (about every year or so) needed new ceiling switches, despite me using hager products rated at 50A+</p><p></p><p>Last time, the live feed to the switch was partially melted and the cable had to be cut to remove the switch. Checking further back and the cable is undamaged except for the last 25mm or so.</p><p></p><p>I am reliably informed that I need to go up to 10 sq mm cable. Pulling it through would be a nightmare, and I don't really want it in a conduit outside.</p><p></p><p>However....when I fitted the shower above, I also ran a second length of 6 sq mm cable, which was to power a second shower that never got fitted. It's still up there.</p><p></p><p>Is there any reason why I cannot now parallel the two cables? Both will fit into the feed mcb (50A) and at the shower end, couple to a shorter length of 10 sq mm using a DP Henley Block, then run 10 sq mm to the switch, and from switch to shower?</p><p></p><p>Thanks for any advice.</p></blockquote><p></p>
[QUOTE="alcazar, post: 469676, member: 30560"] Hi all, first post, so please bear with me. Some years ago I fitted an electric shower in my youngest son's bedroom. It has a ceiling pull switch outside the shower. Shower is 9kW. It was wired with 6 sq mm cable. It has always (about every year or so) needed new ceiling switches, despite me using hager products rated at 50A+ Last time, the live feed to the switch was partially melted and the cable had to be cut to remove the switch. Checking further back and the cable is undamaged except for the last 25mm or so. I am reliably informed that I need to go up to 10 sq mm cable. Pulling it through would be a nightmare, and I don't really want it in a conduit outside. However....when I fitted the shower above, I also ran a second length of 6 sq mm cable, which was to power a second shower that never got fitted. It's still up there. Is there any reason why I cannot now parallel the two cables? Both will fit into the feed mcb (50A) and at the shower end, couple to a shorter length of 10 sq mm using a DP Henley Block, then run 10 sq mm to the switch, and from switch to shower? Thanks for any advice. [/QUOTE]
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