dodgertrue Posted April 5, 2008 Share Posted April 5, 2008 If I have to run an extension cord say 125 feet to a couple of light displays will they still be as bright as if it were only a 25 foot cord? Should I run a 12 gauge cord instead of a 16 gauge? Link to comment Share on other sites More sharing options...
Guest wbottomley Posted April 5, 2008 Share Posted April 5, 2008 dodgertrue wrote: If I have to run an extension cord say 125 feet to a couple of light displays will they still be as bright as if it were only a 25 foot cord? Should I run a 12 gauge cord instead of a 16 gauge?It all depends how much those display's are pulling. Link to comment Share on other sites More sharing options...
dodgertrue Posted April 5, 2008 Author Share Posted April 5, 2008 Less than an amp for each display. Link to comment Share on other sites More sharing options...
Steven Posted April 5, 2008 Share Posted April 5, 2008 Let's calculate: According to a table I found on the web, 16 guage wire is .00473 ohms per foot. (Everybody knows that everything you read on the Internet is true . Another page says .004094 ohms/foot.) Since you're running 2-conductor wire for 125 feet, that comes to 1.2 ohms. At 1 amp, your voltage drop will be 1.2 volts. This is a 1% drop in voltage, which, assuming a resistive load (which is not a good assumption for LED's, by the way), means a 2% drop in power.Nobody will notice. Link to comment Share on other sites More sharing options...
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