On Sat, 7/2/16, osterberg.paul.l@... [amelyachtowners] <amelyachtowners@...> wrote:

Subject: [Amel Yacht Owners] Re: Solar panels for SM
To: amelyachtowners@...
Date: Saturday, July 2, 2016, 9:02 AM


 









Barry and Penny!I'm fare from an
expert on solar panelsBut hear is my
thought's so fare.We have three 150 w panels
in serie on the Arc, they are Turkish origin, and so fare we
are very pleased with them. The two on the rail are from
Sunbeam (Germany I believe) light weight panels also in
serie, they give compared with the one on the arc fare less,
they give on average 15% of my total solar energy but
nominal it should give 31 % if everything equal, but they
come more often in the shadow from the mizzen boom, We have
two Victron Mppt regulators, and two Victron MPPT Control
units, and I have the feeling that the MPPT for the rail
panels "reads" what's coming in from the
larger solar system and reduce out puts. I have the same
issue with the two Battery charger I have, if I run them
both when on shore power at the same time the smaller
charger does not contribute after a few minutes. I guess it
could be the same with more than one solar charger,
especially if the charge rate for my batteries are high say
+95%, but that is not a big deal, they looks giving OK when
battery around 90%.Our thoughts was to have two
light weight panels on our Bimin in serie with the rail
panels, but the canvas man told us it's not a good idea,
as they will chafe, "destroy" they shape of the
bimin and that it will collect moist between the panels and
the canvas. So we decided not to put them there, but I'm
considering to put them there anyway, to put chafe
protection, the shape I'm less concerned about, then we
have the issue with moister, but our Bimini is not very
large and to replace it now and then is not a major
cost.Paul on S/Y Kerpa SM#259 en route to
Sicily
 











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