I am building a house and need to run wire from the meter to the breaker panel. I've pulled my own permit and done this before, but it was a short distance (~50') and I just went and bought 4/0,4/0,4/0,2/0 SER and wired straight from the meter to the panel.
In my current home though the distance from the meter to the house is going to be ~250', and needs to be buried underground, so I plan to use individual wires. According to the NEC, I should add 20% to the AMP for each 100 feet, so I am estimating 50% more which makes it 300 AMPS. Using the 83% rule, that means I need a wire sized for 249 amps, or ideally 300 MCM aluminum.
My issue is that the breaker panels I am looking at have a max wire size of 250 kcmil. And I am not really sure what the maximum wire size at the meter is either.
Do I just run 4/0 from the meter to a junction box located near the meter, then run 300MCM from the junction box to another junction box near the front of the house, and then 4/0 from there to the breaker panel? Is there another obvious solution I am missing here?