Hi everyone,
I am considering purchasing a property that I would have a very long distance between the solar panels and the mppt.
I don’t know exactly details yet… here is my best guess… of what I would have - I am not sure how to figure voltage/amp drops over these distances. I have just picked items to get close enough to ask questions with real numbers.
Distance - 1700 feet
Mppt - Victron 450/100
Array 1. Eight 405-ish panels in series (Voc 45.6 Vmp 37.9v Isc 10.69a -
So Voc 369v Vmp 303v Isc 10.69 - Total watts 3240w
Array2 - exactly the same.
Cable - Aluminum Direct bury 4-4-4-4 - yes way overkill for 10.69 amps, but at $1.55 ft it’s either the cheapest or same price for much larger thicker wire.
It can get to -20 degrees C in the area.
What are the voltage and amperage losses going to look like? And how to I figure them out for a run like this?
Thanks
I am considering purchasing a property that I would have a very long distance between the solar panels and the mppt.
I don’t know exactly details yet… here is my best guess… of what I would have - I am not sure how to figure voltage/amp drops over these distances. I have just picked items to get close enough to ask questions with real numbers.
Distance - 1700 feet
Mppt - Victron 450/100
Array 1. Eight 405-ish panels in series (Voc 45.6 Vmp 37.9v Isc 10.69a -
So Voc 369v Vmp 303v Isc 10.69 - Total watts 3240w
Array2 - exactly the same.
Cable - Aluminum Direct bury 4-4-4-4 - yes way overkill for 10.69 amps, but at $1.55 ft it’s either the cheapest or same price for much larger thicker wire.
It can get to -20 degrees C in the area.
What are the voltage and amperage losses going to look like? And how to I figure them out for a run like this?
Thanks