On 4/12/2015 9:11 AM, TomR wrote:

snip

I think that I would probably want to go with the new 200A service and run
it down the wall on the outside. But, you are there, and I am here, and you
know better what you want and why.

Are you saying that there is an existing conduit/pipe, but that it runs
through the roof and then down inside a wall but not on the exterior of the
wall outside? If so, I thought that there was some kind of code that
prohibits the feed from running more than just a few feet inside a building
before a service disconnect switch. But, maybe that doesn't apply if the
incoming service line is inside the building but also inside a conduit -- I
don't know.

Yes, the feed is through conduit in the wall.

150 amps is more than enough, and that's what they are doing. A 200 amp
feed on the outside of the wall would have also worked.

They are going to do a sub-panel because it is a better installation to
have the solar going into a sub-panel. That will leave room for
expansion, though there are no more high-current devices that I would be
likely to add. If anything, I'd go to a gas range and oven and scrap the
electric cook top and electric oven.

They actually said that a 100 amp panel would still be sufficient but
that my 100 amp panel (Zinsco) has the usual Zinsco issues.
http://en.wikipedia.org/wiki/Zinsco