[RE-wrenches] PID

[Drake]

Hello Wrenches,

Attached is an article from Home Power that came in my email. It says 
module degradation is increased by PID (Potential Induced 
Degradation) by the use of transformerless inverters.  It says power 
degradation can occur over days or weeks and cause a 10% to 60% loss 
of efficiency.

I called Power One and SMA and their tech support people have not had 
any reports of problems. Is this something we need to be concerned about?


Thanks,


Drake


Drake Chamberlin
Athens Electric LLC
OH License 44810
CO License 3773
NABCEP Certified Solar PV
740-448-7328
<http://athens-electric.com/>http://athens-electric.com/

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