is it ok to use 30 amp breaker for just two axles - Toyota Tundra Forums : Tundra Solutions Forum

punisher · #1 (**permalink**) 03-15-2007, 01:51 PM

for the 12v power supply to the brake controller tekonsha suggests 20amps for one or two axles, and 30amps for 3 or 4 axles. Is there a problem with using the 30 am breaker if I just tow two axle trailers. Would rather not under size the system if it is ok.

Jodan · #2 (**permalink**) 03-15-2007, 07:06 PM

Quote:

Originally Posted by punisher

for the 12v power supply to the brake controller tekonsha suggests 20amps for one or two axles, and 30amps for 3 or 4 axles. Is there a problem with using the 30 am breaker if I just tow two axle trailers. Would rather not under size the system if it is ok.

If you use a wire too small for a 30 a fuse the wire will melt before the fuse would blow, so you would have to make sure the wire is rated at 30A for the fuse to work correctly.

punisher · #3 (**permalink**) 03-16-2007, 11:25 AM

is 10 gauge heavy enough?

Jodan · #4 (**permalink**) 03-16-2007, 04:23 PM

Quote:

Originally Posted by punisher

is 10 gauge heavy enough?

Yeah I think so , I tried finding a chart it looks like that guage is good for 60A if I am seeing it correctly. YOu could use a 12 G, its rated for 40a.