Is voltage drop purely a loss in power because of the resistance in long runs of wire, or is there something else to it? I'm designing LED landscape lighting to operate at 12 volts, and each fixture draws about only 50 ma, but I'm planning on a large number of fixtures and one long run. I connected all of the cords I plan on using into a single run and tested it, I only lost .1 volt on a 120 foot run, but that was without any draw at each junction (without any LEDs actually hooked up) is this right? Can I expect to get 11.9 v at the end of a 120 ft run (I think it's 16 ga wire) that has a .05 Amp draw every 3 feet (40 total)?
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