Join Date: Jan 2003
Location: Maine Coast
Thanked 286 Times in 219 Posts
Rep Power: 17
Re: Need high-current 12VDC deck plug
Trolling motor connectors or electric down rigger connectors. Both would work.
With 10AWG you can go 15 feet with only a 5% voltage drop on a 20amp draw.
With 8AWG you can go 25 feet with only 5.2% voltage drop with a 20 amp draw.
Send me a PM and I will forward along my automated excel wireloss worksheet. I use it all the time. Very handy.
Problem is that on many boats the wind gen is 70-80 feet plus of round trip wire run to the battery bank. There is 20 feet of wire just in a 10 foot pole and we've not even entered the boat yet. Solar, wind or any other charge source also critically need the least amount of drop if you want max performance fom the system.. My alternator pos & neg are 2/0 wire...
Unless your charge system has a dedicated voltage sensing wire then even a 3% drop can be too much and an hinder charging performance.. Without knowing the length of the run or the OP's intended min drop for the system it is impossible to say the 4ga wire is either to large or to small...
-Maine Sail / CS-36T
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Last edited by Maine Sail; 08-15-2013 at 10:21 PM.