Tue, 19 Dec 2023 04:41:26 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273158#Comment_273158 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273158#Comment_273158 Wed, 03 Apr 2019 22:50:00 +0100 Victorianeco
This socket will then have a 13 AMP plug and RCD for a shower / sauna the other side of the stud wall.

Space is limited so I intended on putting the back box foamed or use no more nails to stick the back box on to the inside of the plasterboard. Is this okay to do so?

Cannot screw as the screw would only go into the 12.5mm PB before it hit the tiles on the other side.

The other option is to cut the plug off and fit a fused spur but this will invalidate the shower warranty.

Thoughts welcome]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273159#Comment_273159 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273159#Comment_273159 Wed, 03 Apr 2019 23:31:52 +0100 tony
Spur sockets might not be allowed now, I am a bit out of touch.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273161#Comment_273161 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273161#Comment_273161 Thu, 04 Apr 2019 01:14:20 +0100 Mike1
But, as Tony says, under Part P of the building regs any electrical works in kitchens, bathrooms and other rooms involving the use of water (including saunas) need to be properly signed off.

As you have a thin partition (cables closer than 50mm to the surface and subject to various other conditions) you'd probably need an RCD fitted even if it wasn't a kitchen, bathroom etc; as it does involve one of them you'd certainly need RCD protection. So you may also end up replacing your consumer unit too, unless it's already fitted with RCDs.

But as the regs are frequently changing too, you really need to get professional advice.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273162#Comment_273162 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273162#Comment_273162 Thu, 04 Apr 2019 02:17:05 +0100 jfb http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273163#Comment_273163 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273163#Comment_273163 Thu, 04 Apr 2019 08:14:55 +0100 owlman Posted By: jfbWhat size is the shower? 13amp seems small.

+1,-- sauna heater too. Personally I'd want it on a separate feed to the CU and it's own breaker.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273164#Comment_273164 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273164#Comment_273164 Thu, 04 Apr 2019 08:48:03 +0100 bhommels In principle you could hire an electrician to do a "third party" sign-off, most of them are not so keen on this and will charge close to the amount if they had done the job themselves. If you have a sparky friend (s)he might do it though.

IF it is just 13 amps and not more, there are box mounted RCDs available (screwfix) that would do the job so you would not have to upgrade the consumer unit just for this.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273165#Comment_273165 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273165#Comment_273165 Thu, 04 Apr 2019 10:59:17 +0100 WillInAberdeen
RCDs are supposed to be tested regularly so need to be located somewhere they are easy to see. You may be able to convert the breaker in your existing consumer unit into an RCD by using a rcbo https://www.tlc-direct.co.uk/Products/BGCRB32.html

There should be an isolator switch nearby the bathroom for anyone working on the appliance to see it is isolated.

Wiring behind thin partitions should be located somewhere obvious, so it doesn't surprise anyone later when they drill holes for a towel rail. Often at ceiling level with isolators etc near to the bathroom door.

bathrooms need special attention to earthing. Rules keep changing on this.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273168#Comment_273168 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273168#Comment_273168 Thu, 04 Apr 2019 12:40:40 +0100 CWatters
Most electric showers are in the range 8.5-10.5kW which is around 35-45A and need their own feed from the CU.

Edit: Triton say..

"a 7.5kW shower giving a 40-degree Celsius shower in winter will deliver a flow rate of around 3 litres per minute".

So a 3kW shower would give you only about 3*3/7.5 = 1.2L/min]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273170#Comment_273170 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273170#Comment_273170 Thu, 04 Apr 2019 18:38:32 +0100 philedge
For anything bathroom related you really want to add RCD protection if ts not already there.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273178#Comment_273178 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273178#Comment_273178 Thu, 04 Apr 2019 23:14:50 +0100 Victorianeco
It is 2.8kw as this purely powers the lights, jets and the steam outlet. The hot water is fed from a combi.

Basically it came with a hard wired 13amp plug that has to go to another room... Or chop the plug off and fit to a fused spur.

My query was more to do with fixing the spur inside a stud wall with access hatch....]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273184#Comment_273184 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273184#Comment_273184 Fri, 05 Apr 2019 09:25:17 +0100 bhommels I think this thread is full of great advice, and although I can only speak for myself, if you decide to ignore all this and install it without complying to the regs or notifiying BC, I am afraid you are on your own.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273238#Comment_273238 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273238#Comment_273238 Mon, 08 Apr 2019 13:58:29 +0100 Victorianeco http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273245#Comment_273245 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273245#Comment_273245 Mon, 08 Apr 2019 19:23:08 +0100 philedge http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273251#Comment_273251 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273251#Comment_273251 Mon, 08 Apr 2019 22:11:54 +0100 Victorianeco http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273259#Comment_273259 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273259#Comment_273259 Tue, 09 Apr 2019 10:12:22 +0100 owlman Inside a shower cubicle, that's a very unwise thing to do, IMO, even with "so called" water resistant PB. Use a more suitable shower lining there are lots of alternatives and some would give insulation, considering it's a Sauna too.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273268#Comment_273268 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16085&Focus=273268#Comment_273268 Tue, 09 Apr 2019 18:25:38 +0100 Mike1