4 gauge, 2 gauge, 8 gauge, 0 gauge...What's right size power and ground wire for your amp? - Car Stereo Reviews & News + Tuning, Wiring, How to Guide's
2/0 AWG 00 Gauge Copper Battery Cable Power Wire AUTO, Inverter, RV, Solar | eBay
Amplifier wire gauge chart
electrical - Why does Tesla recommend such a small gauge wire for their chargers compared to this chart I found online? - Home Improvement Stack Exchange