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Old 03-03-2010, 05:56 PM   #1
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Is this Overkill? Solar

SolarWorld SW175, 175 Watt 24V Solar Panel :: SolarWorld Solar Panels :: SolarWorld :: Alter Systems On-line Shop | Solar Panels | Solar Inverters | Residential Solar ::

Have a guy whos selling these for almost half the price listed. Is it too much power? Could it work on my airstream?

Just asking, I'm clueless to the Solar thing.

Shane
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Old 03-03-2010, 06:01 PM   #2
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Originally Posted by THEPILL View Post
SolarWorld SW175, 175 Watt 24V Solar Panel :: SolarWorld Solar Panels :: SolarWorld :: Alter Systems On-line Shop | Solar Panels | Solar Inverters | Residential Solar ::

Have a guy whos selling these for almost half the price listed. Is it too much power? Could it work on my airstream?

Just asking, I'm clueless to the Solar thing.

Shane
Shane,

No opinion on the value, but always make sure that you have enough available real estate on the roof for any solar panel(s) you pick.

Bill
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Old 03-03-2010, 06:14 PM   #3
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One problem is that the solar panel is a nominal 24 volt and you've a 12 volt system. You could use it with a charge controler, but you'd only get about half the rated charging wattage.

Cheap ain't always good value.
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Old 03-03-2010, 07:03 PM   #4
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One problem is that the solar panel is a nominal 24 volt and you've a 12 volt system. You could use it with a charge controler, but you'd only get about half the rated charging wattage.

Cheap ain't always good value.
I think that 24V is the usual output for all solar panels, hence the need for a controller with any panel.

Bill
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Old 03-03-2010, 07:16 PM   #5
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I think that 24V is the usual output for all solar panels, hence the need for a controller with any panel.

Bill
Solar panels come in a variety of output voltages. A 12 volt nominal panel will have an open circuit voltage in the 17-22 volt range, the 175 watt panel in question is listed at 44.4 OC voltage.
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Old 03-03-2010, 07:24 PM   #6
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When it comes to power there is no such thing as "overkill"!
(And you can take that to the bank!)
Symbolic speaking ...
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Old 03-09-2010, 02:15 AM   #7
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I heard panels would be dropping in price 40-60% by the end of 2010'.
Even if the volts were that high, wouldn't a mppt put it to good use?
Don't listen to me, I don't know what I'm talking about. I'm trying to figure the same thing.
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Old 03-09-2010, 02:30 AM   #8
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I think the whole solar tax credit thing is going to cut the prices down, it should help the RV industry. Yet again, one more thing to research.
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Old 03-09-2010, 07:07 AM   #9
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If you do enough "Boondocking" to warrant solar, go for it. My advice would be to get someone who REALLY knows their stuff to install everything for you. There's a lot to consider regarding control panel(s), batteries and all the necessary hardware to do it correctly the first time. Good luck.
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Old 03-09-2010, 08:16 AM   #10
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I have those

My 94 Sovereign 21' had four of those on the roof when I got it. I feel like I can man a Lazer light show.
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