<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div><pre>I put a temperature probe under the modules almost every job, and it is always <br>drastically lower than the module itself. A frying module at 130 might have an<br>ambient temperature underneath in its shade of 89 degrees. the specifics are <br>always surprisingly low relative to touching the panel and how your face feels <br>up there. <br><br>Nick<br><br><br><br><br>Can anyone think of a more brutal environment for a piece of electronic<br>equipment than under a solar module which day in and day out experiences the<br>elements and temperatures of 130+ plus F?<br><br> <br><br>Despite any so-called accelerated life-cycle testing and estimated mean time<br>to failure probabilities, nothing takes the place of actual time cooking<br>under solar arrays. <br><br> <br><br>Having seen my fair
share of controller and inverter manufacturers come and<br>go out of business in 30+ years in the RE field, I'll be watching with great<br>interest the great Enphase experiment unfold.<br><br> <br><br>And ever heard of the word "recall"? Swapping a central inverter or two is<br>one thing. Imagine doing it with the X number of microinverters you<br>installed six months or two years ago...<br><br> <br><br>But hey, other than my Eeyore-sounding words above, aren't Enphase inverters<br>so cool with all that they can do?<br><br> <br><br>marco in Hawaii<br><br> <br><br>A while back there was a discussion about the reliability of Enphase<br>inverters. As I understand, they have been selling like hot cakes, so a lot<br>must be installed. Some sort of track record must be emerging. <br><br>Has the promised reliability of these inverters been met? Can they be<br>connected to a rail, under a large array without worry that the unit will<br>need to be dug out
and replaced? Should the inverters be located in an<br>attic or other accessible location.<br><br>Thanks, <br><br><br><br>Drake Chamberlin<br>Athens Electric<br>OH License 44810<br>CO License 3773<br>NABCEP TM Certified PV Installer <br>Office - 740-448-7328<br>Mobile - 740-856-9648 <br><br>No virus found in this incoming message.<br><span>Checked by AVG - <a target="_blank" href="http://www.avg.com">www.avg.com</a></span><br>Version: 8.5.425 / Virus Database: 270.14.52/2485 - Release Date: 11/06/09<br>19:39:00<br><br></pre></div>
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