Wire Size to Brake Magnets - Is it Worth It?
Now that my 2012 5th wheel is beyond the warranty period I have been researching increasing the wire gauge to the brake magnets. I've seen numerous testimonials about the improved performance a...
Forum Discussion
At 3 amps max on each brake, you'll have a total of 12 amps at full braking. 14 gauge handles 15 amps, 12 gauge is 20 amps. If the factory wiring on your trailer from your TowVehicle connection point is at least 14, you'll be ok. This circuit doesn't see full load very much, and for very long. Chances are the normal current across this circuit ranges from 0 to 1 or 2 amps per brake - 0 to 8 amps on the main line.
It is preferable to have a heavier mainline to lessen current drop over the length, however. What size wire is on your TV? I ran 10 gauge on our '93 GMC. I think the factory brake wire on our new '12 GMC Canyon is 12.
It is preferable to have a heavier mainline to lessen current drop over the length, however. What size wire is on your TV? I ran 10 gauge on our '93 GMC. I think the factory brake wire on our new '12 GMC Canyon is 12.
