Since you mentioned 625A, I actually recently discovered that the Tesla superchargers only have a rated amperage of 350A or thereabouts, but the chargers simply

Since you mentioned 625A, I actually recently discovered that the Tesla superchargers only have a rated amperage of 350A or thereabouts, but the chargers simply do a lot of thermal monitoring to compensate the fact that actual amperage is higher than rated amperage. That's smart: you can use thinner wires which are easier to handle, has less copper so isn't a target for theft comparatively.