This article was posted 04/10/2009 and is most likely outdated.

Alternative Power Systems
 

 

Subject - Alternative Power Systems

April 10, 2009
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Alternative Power Systems

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Solar, wind, and other alternative power systems have drawn lots of interest this past year. This is a dynamic and fast moving industry and I receive a lot of inquiries about the subject. If you know of any educational material that is directed to the electrical professional, or if you’re an expert on solar, wind, and/or the NEC (Article 690 – Photovoltaic Systems) and are interested in helping me help our industry, please contact me directly at Mike@MikeHolt.com.                     

         

 

 
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Comments

  • I thought you might be interested in a problem my sister had with a photovoltaic installation at her house. For some reason, she bought a 3 KW system even though her house has a peak demand of perhaps half that much. When they tried to feed the excess power back into the utility system, the voltage in her house exceeded 130 volts and the system tripped off. I was not directly involved in the solution, but it appears that this occurred because the utility source impedance was too high. This is an older neighborhood in a climate where few people have air conditioning. --Jim

    Jim Cook
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