I have a weird setup that I'm trying to configure, but I'm only 90% certain of my logic (and with electrical items I want to be 100%).
I have a new 400A meter/main combo unit with 1 built-in (supplied) 200A breaker to provide power to a 200A subfeed panel.
The same main box has spaces for up to 8 additional circuits for either additional subfeed panels (high current) or regular circuits (15A-40A). Here's the Siemens schematic.
The subfeed panel I'm using comes equipped from Siemens with a 225A main shutoff. Siemens schematic
My question is this: Can I leave the existing 225A main shutoff at the subfeed panel even though the max current for the upstream feed is 200A?
Basically, I bought the panel that has larger capacity and it came with a larger main (225A); however, the circuits in use are spec'd for 200A and that's why the upstream (from the meter/panel main) is 200A.
My thought is, just as with everything else, the smallest number will win, but the 225A physical shutoff (while not even strictly necessary because there's a physical upstream shutoff) provides an easier way to kill the power locally vs going outside.
Anything wrong with my logic/plan?