I'm about to wire up a 250 Smart BMS to 13kw of lifepo and am concerned with the wire gauge coming off the BMS. Is there a method most folks use to attatch 0 awg wire to the wing plates in place of the stock 2awg wire?Yeah, those silicone coated wires can push a lot more current than similar gauge copper wire. They can handle the heat. I used to push 100A through 10 gauge on my race drones. It can handle it.
For continuous, you need to derate still. But in my testing, you can push a lot through that type of wire. They do get hot and resistance does increase, so not the best efficiency wise, but yes, a 250A can handle 250A.
I tried using google site search to see what others have done and didn't find any results.