A Guide to Wire Gauge Sizes - Precision Manufacturing Company Inc.
Conduit Fill Chart – How Many Wires Can Fit in an EMT, IMT, Rigid Steel, or Flexible Metal Conduit Pipe? – Electrical References – Elliott Electric Supply
Allowable Amperage in Conductors - Wire Sizing Chart - Blue Sea Systems
electrical - Why does Tesla recommend such a small gauge wire for their chargers compared to this chart I found online? - Home Improvement Stack Exchange
12 Volt - Wire Gauge vs. Amps
I like this chart but still I don't know what AWG is used for 400A : r/electricians
AWG - American Wire Gauge Current Ratings
4/0 Gauge - 25 Feet Black - EWCS Brand 100% Copper Premium Industrial Grade Extra Flexible Welding Cable 600 Volt - Amazon.com