Wire size for turbine

[Guest]

I'm hooking up my 300w turbine to my 520ah battery bank in my solar powered camping trailer. I want that turbine to contribute to keeping those batteries charged, and for when there's overcast weather etc. Problem is the turbine is around 25m away from the batteries.

What size wiring would I need for the positive and negative wires to run DC power over that distance to the regulator next to the batteries?

The power will run uphill a little too, if that makes any difference.

[Mike90250]

The power will run uphill a little too, if that makes any difference.

Arrgh ! Panels have to be above the batteries, for proper electron flow , so I suspect wind might have the same requirement, and that's why they ask for tall towers

[indalecio.feng]

Use 6mm2 wires should be ok!

But this is not a good solution.

[Aussie Bob]

Arrgh ! Panels have to be above the batteries, for proper electron flow

Ya kidding right?

The turbine is in the back corner of the yard, behind the house where we get great winds up the valley. I park my camping trailer up in the front of the yard, but the top of the turbine is higher than the batteries, only just.

[Mike90250]

Ya kidding right?

Right. I thought you knew all this.

[Aussie Bob]

hehe, I was just playing around.

[Mike90250]

here's a link to a wire size calculator (a spreadsheet, excel or openoffice) that will work for you,

http://www.uwgb.edu/nevermab/voltage_drop_calculator_.xls

some cells are locked, some are slaved to another cell, you may have to hunt around the spreadsheet a bit to find the inputs.

Mike