What Gauge Wire Is Needed To Run Charge Line for Battery From Truck to Trailer

Updated 01/14/2020 | Published 01/13/2020

Products Featured in This Question

Pollak Metal 7-Pole, RV-Style Trailer Socket - Vehicle End

(116)

$15.10

10 Gauge Wire - Blue Primary - Per Foot

(110)

$1.61

40 Amp In-Line Circuit Breaker - Perpendicular Mount Bracket

(101)

$9.99

Question:

What gauge wire do you need to charge the battery on a camper from the truck

asked by: Don E

Helpful Expert Reply:

The wire that runs from the vehicle's battery to the 7-way trailer connector and then from the 7-way trailer connector to the trailer battery should be at least a 10 gauge. If you don't have any 10 gauge wire you can purchase part # 10-1-1 by the foot. Please note, you will need a circuit breaker part # 9510 on this charge line wire about 6" away from the battery on the tow vehicle. The 7-way trailer connector can then be used to attach and disconnect the charge line between the tow vehicle and trailer.

expert reply by: Conner L