At the supply we just ask for a 400 amp pedistal but they know we mean 320 amp. Milbanks catolog for Com Ed only shows single phase 320 not 400 amp meter housings. Com Ed resi feeds underground are normaly 200 and 320 a. Overhead 100, 200, and 320 a.
We would only bond one panel and would run a larger water pipe ground than a single 200 a service, I think 1ott. You could do it other ways.
