If you have an inverter below the size 400 watts power supply, then 8 AWG cable is sufficient ... the length of the wire also goes up. Similarly, for smaller-size inverters or solar panels like 100w, ...

It is American Wire Gauge. If you use a lower gauge number, it will have lower resistance power. Commercially, if you install solar panels of 50 watts, you have to use 10 AWG gauge wires. In addition, ...

Solar panels ... rating. The wire size affects the resistance and voltage drop, which can influence the efficiency and safety of your system. The American Wire Gauge (AWG) measures the diameter ...