Tow rig trailer charging circuit - Pirate4x4.Com : 4x4 and Off-Road Forum

Travis Waldher · 05-16-2009, 05:39 PM

I need to add one to a vehicle, and I'm a bit confused about how to size the wire.

Is the wire size and voltage drop the determining factor for the charging battery? So if I want to send 30A down the line, size the wire appropriately for 13+V to reach the battery?

Also, fuse or self resetting circuit breaker? Leaning toward fuse.

nissancrawler · 05-16-2009, 05:54 PM

Mine is triple protected.

vehicle battery-switch-manual breaker-diode-trailer battery

edit: thought it was a breaker, it's a fusible link

edit2: I just looked at the trailer, I did change to a manual breaker.

some info here: http://www.pirate4x4.com/forum/showt...trailer&page=2

FYRMAN · 05-16-2009, 06:13 PM

10 guage. Use a manual reseting circuit breaker.

Travis Waldher · 05-16-2009, 06:24 PM

Was considering something larger than 10GA to make more available power back there.

This is for a TT that will dry camp alot, giving the batteries on the camper a bigger shot at juice wouldn't be a bad thing.

EDIT: On the 10GA circuits, is that usually a 30A breaker or fuse that goes in?

05-16-2009, 05:39 PM	#1 (permalink)
Travis Waldher Pirate4x4 Addict! Join Date: May 2001 Member # 4878 Location: Bremerton, WA Posts: 7,523	Tow rig trailer charging circuit I need to add one to a vehicle, and I'm a bit confused about how to size the wire. Is the wire size and voltage drop the determining factor for the charging battery? So if I want to send 30A down the line, size the wire appropriately for 13+V to reach the battery? Also, fuse or self resetting circuit breaker? Leaning toward fuse.

05-16-2009, 05:54 PM	#2 (permalink)
nissancrawler Registered User Join Date: Jul 2006 Member # 76684 Location: Wichita, KS Posts: 2,919	Mine is triple protected. vehicle battery-switch-manual breaker-diode-trailer battery edit: thought it was a breaker, it's a fusible link edit2: I just looked at the trailer, I did change to a manual breaker. some info here: http://www.pirate4x4.com/forum/showt...trailer&page=2 __________________ [QUOTE=nahmus;9175355]asking chit chat to stop before they are done is kinda like asking piranhas to stop after one bite.[/QUOTE] Last edited by nissancrawler; 05-16-2009 at 06:16 PM.

05-16-2009, 06:13 PM	#3 (permalink)
FYRMAN Registered User Join Date: Apr 2001 Member # 4358 Location: otHELLo, Washington Posts: 3,700	10 guage. Use a manual reseting circuit breaker. __________________ [COLOR="Red"]Central Washington Muff Dive and Rescue Team[/COLOR]

05-16-2009, 06:24 PM	#4 (permalink)
Travis Waldher Pirate4x4 Addict! Join Date: May 2001 Member # 4878 Location: Bremerton, WA Posts: 7,523	Was considering something larger than 10GA to make more available power back there. This is for a TT that will dry camp alot, giving the batteries on the camper a bigger shot at juice wouldn't be a bad thing. EDIT: On the 10GA circuits, is that usually a 30A breaker or fuse that goes in? Last edited by Travis Waldher; 05-16-2009 at 06:25 PM.

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