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profdant139's avatar
profdant139
Explorer II
Apr 06, 2022

Break-even point between cable length and voltage drop?

I have two cables for my portable solar panel – one is 40 feet long, and the other is 70 feet long. (We boondock, and we like to park the trailer in deep shade and put the panel out in the open sun.)...
pianotuna's avatar
pianotuna
Nomad III
Apr 06, 2022
Hi profundant,

Solar panels are considered to be constant voltage devices. Bright sun ought not make much of a difference.

I'm a little surprized that the suitcase only produces 14 volts. I'd want at least 17 volts.

Have you measured the panel voltage in a no load situation?

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