I'm doing some personal research on the specifications for cables that can handle megawatt power draws. As an example, the wires needed to supply 450VAC @ 2000A (0.9MW). I'm looking for wire diameters and insulation requirements.
Rough ballpark values are suitable for my needs. I'm not worried about voltage drops, temperature considerations, or the like.
I'd rather not pester people with this every time I want to try different voltages and/or amperages, so an online resource would be appreciated (suitable for a lay reader would be ideal but I'll try to work around something geared for actual engineers).