[RE-wrenches] Fwd: Grounding on a glacier, SunPower modules

[Larry Crutcher, Starlight Solar]

I meant to type ...NO noticeable loss of power.


On Jul 23, 2009, at 7:27 PM, Larry Crutcher, Starlight Solar wrote:

> I have installed tons of SunPower 90's without any ground connection  
> on RV's with noticeable loss of power. I believe the problem only  
> occurs when you have a path to ground from the frame.
>
> Larry
>
> On Jul 23, 2009, at 12:58 PM, boB Gudgel wrote:
>
>> Larry Crutcher, Starlight Solar wrote:
>>> Hi Jay,
>>>
>>> An interesting quandary indeed.
>>
>> This is another good example of an application that I was trying to  
>> grill Sunpower about --- as far as grounding their modules that  
>> need to be positive grounded
>> in order to take advantage of their higher efficiencies.   They  
>> couldn't answer this simple question.  How would you use one in an  
>> airplanefor instance ?
>> There are solar powered airplanes (sort  of)   Is a large faraday  
>> shield enough ?   Sort of like the ground radials that Larry has  
>> mentioned.  I would
>> imagine that if you get large enough radials that it ~might~  
>> approach being a virtual ground. Works for antennas though.
>>
>> I like questions like this one.  Sure makes one think a bit.
>>
>> boB
>>
>>
>>
>>
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