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Old 07-31-2018
robertnm robertnm is offline
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Default Solar pv wattage on a 1983 PT 40

Does anyone know the wattage of the solar panel that came on a 1983 PT 40?
Cheers
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Old 07-31-2018
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sfedeli sfedeli is offline
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The '83 did not come with solar panels. Someone must have added them. A typical 3' x 5' panel from 5 or 10 years ago is around 200W in full, direct sunlight. They are a little better now, maybe closer to 275W.
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Old 07-31-2018
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Quote:
Originally Posted by robertnm View Post
Does anyone know the wattage of the solar panel that came on a 1983 PT 40?
Cheers
Were there Solar Panels in 1983?
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Old 07-31-2018
Jim Brookshire Jim Brookshire is offline
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Yes, there were solar panels in 1983. However almost all panels installed on RV at that time were low voltage and were much smaller than today’s panels. I have not seen any installations from that time that are able to do anything on a Bird, except maybe maintain the batteries while stored. And that is if they are disconnected from the coach. People completely wasted their money. At least in my opinion.
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Old 07-31-2018
robertnm robertnm is offline
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It is about 35 or 40 watt not sure when installed.
The controller is shot so I spent $18 to get a new one. Will use to trickle charger coach batteries.
There is enough real estate on the roof to put up a large array and still have room for walkway.
I have about 225 watts on our old 1951 General American aero coach installed in the late 80's tilted and they still operate today.
We park the coach where there are no facilities so keeping the coach batteries up is the first priority.
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Old 08-10-2018
DW SD DW SD is online now
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I had almost 600W on my old PT (now Gio’s)
I stripped the parasitic solenoids out of it to drop consumption down to about 1 to 2 amps with refrigerator and propane sensor safety circuit on.

With this much solar it’s stay charged 9 months of the year with mostly sunny weather while dry camping and thoughtfully turning off appliances.

An MPPT charge controller might have helped efficiency.
Another way to look at it....
I could offset about 130 to 170Ahours per day with the solar.

Don’t see how 40W offers much. Maybe if fully charged and batteries totally off.

Maybe I don’t understand the use case.
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