[RE-wrenches] Polaris gone bad?

[Glenn Burt]

Be aware of the application of the correct model of Polaris (grey) when used on finely stranded conductors, like the original Engage trunk cables. 
I have seen many failures due to this problem.

-----Original Message-----
From: "eric at harvesthesun.com" <eric at harvesthesun.com>
Sent: ‎4/‎6/‎2017 13:35
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Cc: "geoff at third-sun.com" <geoff at third-sun.com>
Subject: [RE-wrenches] Polaris gone bad?

Wrenches,
 
We have been having Polaris connectors start to fail on older installs. About 4 or 5 years ago we abandoned wire nuts in favor of the much more pricey, but deemed safer Polaris insulated tap connectors in our combiners. About a year ago we transitioned, about 80% away from Polaris to Buchannon connectors. We have had two recent call-backs on systems downed due to Polaris connectors burning up inside of boxes. (No damage beyond the connector itself). Recently we interfaced with another solar install firm that has gone back to wire nuts due to this same problem. Anyone else seeing this? Wondering if this is an industry-wide issue regarding a Polaris manufacturing defect or if we're still in the realm of isolated flukes.
 
Eric
SunHarvest
(530) 559-5023
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