Electroendosmosis DC Circuits

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tbro723

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FPN at the end of NEC 310.13 states that "thermoplastic insulation where used on dc circuits in wet locations may result in electroendosmosis between conductor and insulation."

I know that FPN are only recommendations but does this mean that I should be specifying thermoset type insulations for underground conduit runs in Solar PV applications? This would be an increased cost to the overall system and so I would like to make sure that electroendosmosis is a serious concern for 600V and below systems.

Does anyone have any good articles or white papers on this topic? Or even some good comments/suggestions?

Thanks
 
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