Guest noggy Posted March 15, 2010 Share Posted March 15, 2010 I agreed to wire up my mates light bar on his disco, thinking to myself "how hard can i be? i did spend 3 years doing systems and control". But have now found, i cannot remember anything that i learnt! 4 work lamps, bulbs are 12volts and 55Watts Ive got some 25amp cable (though that should be ok?) i have wired the lights in parallel (is this my mistake? series may be better?) Im sure Luke will answer me with relative ease! My fat friend (Adambowling on here) also hasnt bought a relay i was going to wire it up without, what does the panel think to that? Thanks Chris Quote Link to comment Share on other sites More sharing options...
LandyManLuke Posted March 15, 2010 Share Posted March 15, 2010 They need to be wired in parallel, no question about that. each 12v bulb needs to see 12v. 4 x 55w = 220 W P = I x V, so P / V = I 220 / 12 = 18.3 A So 25 A cable will be ok, and a 20 A fuse will do nicely. I reckon you'll struggle to find a switch capable of handling the current, if you do, it'll probably be pretty chunky, and more expensive than a relay, which will only cost a couple of quid and make the whole job a lot easier. Edit: Here's one I copy-and-pasted earlier.... Quote Link to comment Share on other sites More sharing options...
Guest noggy Posted March 15, 2010 Share Posted March 15, 2010 absolutely perfect i knew you'd come to my rescue! Cheers luke! Chris. Quote Link to comment Share on other sites More sharing options...
adambowling Posted March 16, 2010 Share Posted March 16, 2010 Cheers for the help luke it is my disco for that comment I can only hope for more burnt fingers! Cheers Adam Quote Link to comment Share on other sites More sharing options...
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