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Post by burnhaven on Jun 2, 2016 4:59:34 GMT -8
I just received my 100 watt Renogy suitcase kit and need advice on extending the cables. The cables with it will be too short so I have the choice of extending it or replacing it with something like these Renogy Solar Tray Cables which have a battery connect ring on one end and bare wire for the controller on the other. Problem there is no fusing. My first choice was the Renogy Extension Cable For Solar Power System at 15 ft 10 gauge which when inserted into the existing cable retains the original fuse. Then I could consider replacing the original alligator clips with battery rings. This would be a combination of 10 ft of 12 gauge ( original cable ) plus 15 ft of 10 gauge which hopefully would be ok for charging one 12 volt RV battery. Another possible option is the Anderson power pole cables but what I see in 10 gauge is pricey and requires some splicing / adapting powerwerx.com/powerpole-connector-extension-cable
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Post by burnhaven on Jun 2, 2016 7:35:44 GMT -8
In my first test of the system yesterday with good sun, it was showing about 14.5 volts at the controller and 5 amps. I don't know if this is relevant but using the voltage drop calculator below I get these figures ( I left number of conductors at one ) At 4 conductors in parallel the numbers are quite a bit less and I can see the cable that came with the kit has multiple wires. 15 ft Renogy extension 10 AWG 14 volts DC 5 amps loses .15 volts 10 ft Original renogy 12 awg 14 volts dc 5 amps loses .16 Total loss .31 voltage at the end 14-.31=13.69 www.calculator.net/voltage-drop-calculator.html
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