OK, here's the question...
I've done several panel upgrades / service upgrades, but they've all been single family homes up until now.
I've been asked by a friend of the family to upgrade the service and panels on his 2-apartment building (side-by-side units) to 200A.
Currently they have a single drop going to a 2 meter box, where it splits and runs to separate 100A panels in the basement of each unit(6 space Pushmatics... oh boy!).
He's got 1 1/2" RMC/IMC in place from the meters to the panels. I haven't pulled the meter covers or gone up to see what size the current drop is.
I know that per 310-15 I can run 2/0 cu from the meters to the new panels in each unit through the existing conduit. (He's happy 'cause he doesn't have to pay me to rip out his old pipe and install new. I'm happy 'cause I can get this job done faster... I'm doing this more as a favor to a friend than a money maker)
Do I need to run 400 kcmil (400A) as the new drop to the two meters, or it there a reduced conductor sizing FPN that I'm missing in reviewing the Code?
Thanks in advance,
Doug
