<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">Wrenches,<br><br>Can anyone tell how PTC ratings are determined for modules on the CEC list of eligible modules? I seem to recall having heard that the manufacturers provide this data on the honor system. Can anyone verify this?<br><br>The test is obviously more involved than flash testing at STC. Even though PTC is supposed to simulate more real-world conditions, it must still require a controlled environment. How exactly is this done, and how long does it take?<br><br>Best,<br>Jerry Caldwell<br>Recurrent Energy<br></div><br>
</body></html>