Be sure to use the proper gauge wire. This means use one size larger than the maximum amperage you expect to input. The following wire gauges are our recommendations, and do not necessarily represent pre-established wire tolerances.
10 gauge: 0-8 amps
8 gauge: 9-20 amps
6 gauge: 21-35 amps
4 gauge: 36-55 amps
2 gauge: 56-65 amps