The wiring size provide maximum annual energy losses of 5% or less for sites with a 12 mph average wind speed (assuming the standard Rayleigh distribution of wind speeds) which is sufficient for most sites.
We will order a LED AMP meter to 30 AMPS
From South West Wind power who supports the Air Breeze
Recommended Sizes for Circuit Breakers or Slow-Blow Fuses
12-volt model: 20 amps DC, part number 3-ELOT-1147-03
If a stop switch is used, the fuse or circuit breaker should be placed between the switch and the batteries.