mom'sZ Posted August 18, 2007 Share Posted August 18, 2007 Wiring stuff is not my favorite task. I don't cheese ball it because it can be dangerous but I tend to get something working and figure on going back to 'do it right' later. Well almost everthing else is done and later is fast becoming now So... here is my question. What gauge wire is safe for what amp draw? How high of an amp draw should be operated by a relay? I'm no EE and haven't a clue. Now this is for a race car. Some of the circuits are mission critical. Cooling fans, fuel pumps, data aquisition systems, gauge lights, driver comfort items, all these types of things need wired up. I've looked at prewired kits and such, and will probably buy a switch panel with circuit breakers built in so driver can try to reset, but the harness itself is to specialized for any kit to suit me. So a chart or something? amps vs wire gauge or is it more complicated then that? Also any source for automotive type electrical supply on the net Quote Link to comment Share on other sites More sharing options...
Hey_Allen Posted August 18, 2007 Share Posted August 18, 2007 I've found a few resources for figuring out the wiring sizes, but here are a couple. The first one is aiming more at building power, but gives conservative ratings. Just above the actual table there are a few disclaimers about the information, and explaining about some of the ratings as well. http://www.powerstream.com/Wire_Size.htm On this next one, they are targeting automotive wiring, and the chart (about 1/3 of the way down the page) lists wire gauges and length of run for each rating. They also explain wiring selection criteria and common calculations to figure out wire types yourself if need be. Overall, I suspect this one will be more useful to you, as they are giving pointers on planning out a car wiring project, admittedly, I think it's car audio, but many of the points made are valid. http://www.termpro.com/articles/powersys.html If you want more resources, I just went to Google and searched for "automotive wire gauge current ratings", and these are among the first 3 or 4 that popped up. I hope this helps some, and happy wiring! Quote Link to comment Share on other sites More sharing options...
COZY Z COLE Posted August 19, 2007 Share Posted August 19, 2007 http://www.241computers.com/ford/ContentExpress20-12-9.html LARRY Quote Link to comment Share on other sites More sharing options...
ktm Posted August 19, 2007 Share Posted August 19, 2007 http://www.rbeelectronics.com/wtable.htm http://www.rallylights.com/other/wiring.htm Quote Link to comment Share on other sites More sharing options...
mom'sZ Posted August 19, 2007 Author Share Posted August 19, 2007 http://www.rbeelectronics.com/wtable.htm http://www.rallylights.com/other/wiring.htm Now there ya go.... good stuff, thank you Bo here's another thread about wire size from our megasquirt section http://forums.hybridz.org/showthread.php?t=124879 Quote Link to comment Share on other sites More sharing options...
ktm Posted August 20, 2007 Share Posted August 20, 2007 No problem. I scoured the net for hours before I started on my Wolf EMS wiring. Quote Link to comment Share on other sites More sharing options...
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