firepool Posted August 28, 2008 Share Posted August 28, 2008 Im changing a pull cord switch for my extractor in the bathroom and the new one seems to have different terminals. The old one has 5 terminals; L com, L 1-way, N, N 2-way and E. The new one has 4 terminals; L1, L2, com and E. Does anyone know the correct way to wire this? The old one The new one Quote Link to comment Share on other sites More sharing options...
Kev.O Posted August 28, 2008 Share Posted August 28, 2008 Looking at the pictures, I'd say the first one is an isolator switch which is double pole. Ie it breaks both the Line (live) and Neutral. However the new one appears to be a standard two way switch. When you removed the old wiring was there a black or blue wire in both 'N' and 'N-2way' and a red or brown wire in both 'L' and 'L-1 way'. Quote Link to comment Share on other sites More sharing options...
firepool Posted August 28, 2008 Author Share Posted August 28, 2008 When you removed the old wiring was there a black or blue wire in both 'N' and 'N-2way' and a red or brown wire in both 'L' and 'L-1 way'. Yes red in both the 'L's and black in both the 'N's Quote Link to comment Share on other sites More sharing options...
firepool Posted August 28, 2008 Author Share Posted August 28, 2008 Can my new one be connected easily and how? Quote Link to comment Share on other sites More sharing options...
JustGav Posted August 28, 2008 Share Posted August 28, 2008 Since it is an extractor and not just a light bulb, I believe you NEED to use the isolating style switch hence the extra wires. Quote Link to comment Share on other sites More sharing options...
firepool Posted August 28, 2008 Author Share Posted August 28, 2008 ok cheers guys I'll try and get another switch! Quote Link to comment Share on other sites More sharing options...
Kev.O Posted August 28, 2008 Share Posted August 28, 2008 I believe Gav is right. I did try googling it for you earlier but never got much luck Quote Link to comment Share on other sites More sharing options...
firepool Posted August 28, 2008 Author Share Posted August 28, 2008 Thanks for the advice Quote Link to comment Share on other sites More sharing options...
dave barratt Posted August 28, 2008 Share Posted August 28, 2008 you need the same switch as you removed Quote Link to comment Share on other sites More sharing options...
merckx Posted August 28, 2008 Share Posted August 28, 2008 Almost half price at Screwfix compared to B & Q. Use Screwfix or a similar shop whenever you can as B & Q can be extortionate especially for screws. http://www.screwfix.com/prods/88758/Electrical/Switches-Sockets/White-Moulded/Volex-Range/Volex-50A-Ceiling-Sw-Neon There's a free coffee machine at the Screwfix near me . ps. Only mess with electricity if you're 100% confident that you know what you're doing. Quote Link to comment Share on other sites More sharing options...
firepool Posted August 28, 2008 Author Share Posted August 28, 2008 Ok. I've bought another switch, think its the right one this time with 5 terminals; 1 L and 1 N on SUPPLY side and 1 L and 1 N on LOAD side (plus an earth in the casing). Only 1 of the wires is 'live' coming down from the ceiling, should this be connected to the L SUPPLY or L LOAD? Quote Link to comment Share on other sites More sharing options...
SteveR Posted August 28, 2008 Share Posted August 28, 2008 I'd have said the mains ring (i.e. the cable coming from the ceiling) is the "supply" and the fan is the "load"! BTW you're breaking the new laws by working on electrics in your bathroom, I think. I know you can do basic wiring jobs like changing switches elsewhere in the house, and perhaps a fair bit extra, but I don't think you can in the kitchen & bathroom because of the moisture factor and extra issues that could bring. Quote Link to comment Share on other sites More sharing options...
SteveR Posted August 28, 2008 Share Posted August 28, 2008 double post Quote Link to comment Share on other sites More sharing options...
d_d Posted August 28, 2008 Share Posted August 28, 2008 think you answered your own question if its coming down the ceiling and its not on load ie. supplying the feed to the bulb/fan then it would be the supply. Just dont get changing any intermediate switches please Quote Link to comment Share on other sites More sharing options...
merckx Posted August 28, 2008 Share Posted August 28, 2008 I'd have said the mains ring (i.e. the cable coming from the ceiling) is the "supply" and the fan is the "load"! Yes. BTW you're breaking the new laws by working on electrics in your bathroom, I think. I know you can do basic wiring jobs like changing switches elsewhere in the house, and perhaps a fair bit extra, but I don't think you can in the kitchen & bathroom because of the moisture factor and extra issues that could bring. I didn't know that, I thought it was all outlawed. I had a quick search on Google, you are correct. On January 1st 2005 legislation came into effect which brought electrical work in dwellings under the Building Regulations, and made it a controlled service. This amendment to the Building Regulations, known as "Part P", imposes safety requirements, and also classifies electrical installation work into two basic categories, notifiable and non-notifiable. Essentially the distinction is between major work, or work in what are deemed high-risk areas such as kitchens, bathrooms and gardens, and minor work such as replacing switches or adding sockets to existing circuits. (NB to those with a knowledge of the IEE Wiring Regulations, the term "minor work" is used here in its generic sense rather than the meaning defined in the Wiring Regs.) Quote Link to comment Share on other sites More sharing options...
firepool Posted August 28, 2008 Author Share Posted August 28, 2008 Thanks for the comments guys, I've taken it apart so I'll finish the job now! I'll let you know how it goes. . . Quote Link to comment Share on other sites More sharing options...
gordy07 Posted August 28, 2008 Share Posted August 28, 2008 Im an electrician,does the fan have a run on timer? Quote Link to comment Share on other sites More sharing options...
firepool Posted August 28, 2008 Author Share Posted August 28, 2008 no, its just a pull cord on/off Quote Link to comment Share on other sites More sharing options...
gordy07 Posted August 28, 2008 Share Posted August 28, 2008 The red from the power supply(live feed) goes into supply L The black from power supply(live feed) goes into supply N The red that goes to the fan goes into load L The black that goes to the fan goes into load N Hope this helps and turn the mains off before you do it,or at least the lighting fuses Quote Link to comment Share on other sites More sharing options...
firepool Posted August 28, 2008 Author Share Posted August 28, 2008 Thanks very much gordy, I just missed your post but was on way to do it exactly how you just said! Its wired to the 1st floor lighting circuit so I isolated that before I done anything. Its working fine now with all connections nice and tight. Thanks for all your help people Quote Link to comment Share on other sites More sharing options...
gordy07 Posted August 28, 2008 Share Posted August 28, 2008 No problem mate glad you got it sorted any other electrical problems give me a shout! Quote Link to comment Share on other sites More sharing options...
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