> until evening (and why not one facing West ?) I'd have thought that
> would be the most effective way
>

I submitted a complaint to the parent company and ended up with the
installer returning.  Shortly after his return a lively discussion on
the roof about what was optimum followed.

He finally made a honorable offer to relocate at his cost which I
declined.  I felt to some degree that he installed them where he
thought was best and not just the easiest.  I had to agree that his
option included shortest cable run, easier future upgrade option. (if
I do upgrade it will be on the North section)

While we were on the roof, the time of day was such  that the east
facing panels were in shadow, at the same time as it turned out the
North facing roof section was also in shadow from neighbours trees.
So it seemed futile to move them.

One thing we could not agree on however, was my suggestion to face
some East and some North.  He ended up getting some national head
honcho on the phone wanting to bet $500 that the inverter would sense
the worst case panel and track it.  I kept stating that the tracking
inverter only "sees" the array as a single power source and it will
load it to achieve maximum power transfer.  Both the installer and the
gambler refused to accept this quoting x years installing etc and that
it would track the worst panel.
--=20
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