Guest d6yme Posted November 9, 2011 Share Posted November 9, 2011 ok been looking into getting some new cabling to rewire my new unit and was wondering if anyone knows of a good place to get 2.5 twin and earth ( for my lighting) around the Glasgow area need 200m of the stuff. And by good i mean cheap Quote Link to comment Share on other sites More sharing options...
tomgeer Posted November 9, 2011 Share Posted November 9, 2011 toolstation.com mate Quote Link to comment Share on other sites More sharing options...
kjgreen3 Posted November 9, 2011 Share Posted November 9, 2011 Check yellow pages for any local electrical wholesalers and give them a bell to find prices. In sheffield its roughly £37 + VAT for 100m of 1.5mm2 Twin+ Earth from my wholesalers. If you don't have too many (or high powered) lights you could get away with 1.0mm2 twin + Earth as long as it was fused correctly. Alternatively if the cabling is to be tested after installation (I hope so!) you could try the local scrappies and if anyone comes in with some part coils or even full ones you could buy it off the scrappy for the cost of how much copper they would get out of it (probably 15-20 quid per 100m). Quote Link to comment Share on other sites More sharing options...
kjgreen3 Posted November 9, 2011 Share Posted November 9, 2011 Sorry just seen you are running 2.5mm2, I assumed it was 1.5mm2. Why are you running 2.5mm2 for lighting circuits? Quote Link to comment Share on other sites More sharing options...
Guest d6yme Posted November 10, 2011 Share Posted November 10, 2011 i work on ships where you do things ones and future proof it. I am running 2.5 so if want to splice in a load of large wattage halogens in the future i don’t have to change anything. There is going to be about in mu unit which is going to have 20 6 foot strip lights running off 2 16 amp breakers. Its the same reason that some of the sockets are going to be run on 4mm so i can run welders and compressors of them with no worries Quote Link to comment Share on other sites More sharing options...
kjgreen3 Posted November 10, 2011 Share Posted November 10, 2011 Ah I see, remember the Fuse/breaker is only there to protect the cable. If the runs are short It may be cost effective to run more thinner cable on smaller breakers (if you have space in the distribution board) example you have 20 6 foot lights running off two 16 amp breakers you could run it off 4x 6 amp breakers feeding 4x 1mm2 cable (Also if you have a fault on a circuit it will only knock out 5 light fittings instead of ten) infact quick calculation; 20 single tube fluorescents = 20x 70 watt = 1440Watt /230 = 6.26A So if you like you could run that off a single 10A circuit on 1.5mm cable and run another 10A 1.5mm cable to each of the lights where in the future you may want to put up halogens. Quote Link to comment Share on other sites More sharing options...
Guest d6yme Posted November 10, 2011 Share Posted November 10, 2011 its 20 twin 6 foot lights so might run it of two 16A breakers running 1.5mm then have the halogens running off one of the breakers with 2.5mm going to them. Quote Link to comment Share on other sites More sharing options...
Guest d6yme Posted November 10, 2011 Share Posted November 10, 2011 also running the lights in parallel so if one light go out the rest should still work. Quote Link to comment Share on other sites More sharing options...
kjgreen3 Posted November 12, 2011 Share Posted November 12, 2011 Sounds good let us know how you go on with the installation. Quote Link to comment Share on other sites More sharing options...
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