[C320-list] Solar panels and shading

[Pat Tormey]

Yes, you are right. I was supposing that they wanted to charge 12 volt batteries. Putting 2, 12 volt rated panels in series will output 24 volts just like batteries.

 

Catalina 320’s are 12 volt systems, right?

 

Pat

Pat Tormey 



 

From: sail-ability sail-ability [mailto:sail-ability at sympatico.ca] 
Sent: Monday, January 29, 2018 7:30 PM
To: Pat Tormey <ptormey at 4square.net>; c320-list <c320-list at catalina320.com>
Subject: RE: [C320-list] Solar panels and shading

 

I'm sorry but this is incorrect, the panels can indeed be connected in Series so that they put out 24V same as connecting 12V batteries in series to produce 24V.

Regards

JohnM

1999#574

 

---------- Original Message ---------- 
From: Pat Tormey <ptormey at 4Square.net <mailto:ptormey at 4Square.net> > 
Date: January 29, 2018 at 5:41 PM 

Since most Panels have reverse polarity protection you don’t want to put them in series, you can simply parallel them (in theory)

 

 

Pat

Pat Tormey PE
Microsoft MVP <https://mvp.microsoft.com/en-us/PublicProfile/4025688?fullName=Pat%20Tormey> 

603.437.5726

 

From: sail-ability sail-ability [mailto:sail-ability at sympatico.ca] 
Sent: Monday, January 29, 2018 4:47 PM
To: ptormey <ptormey at 4square.net <mailto:ptormey at 4square.net> >; c320-list <c320-list at catalina320.com <mailto:c320-list at catalina320.com> >
Subject: Re: [C320-list] Solar panels and shading

 

I have a single 180W panel on the davits on Luffin Life. Never had a shading issue due to location of the panel. I have learned however that if you have two panels hooked in series that the shading issue is mitigated somewhat. There's a guy in Mississauga ON (S.A.W. Technologies) who sells semiflex 100W panels which weigh in at 4lb. The issue is that you need a controller which will handle 24V; my Blue Sky controller will do that. I'm thinking of an upgrade as my single solid panel weighs in at 40lb and difficult to handle. I think those panels come in at 280 CAD each.

Cheers

JohnM

---------- Original Message ----------
From: ptormey at 4square.net <mailto:ptormey at 4square.net> 
Date: January 29, 2018 at 1:13 PM


Keep in mind that you can always add another panel someplace else if you
have two smaller spaces or to keep one in the sun.


Pat

Pat Tormey

>