[RE-wrenches] MC4s are listed for THWN, right?

[Jason Szumlanski]

I found this gem today while tracking down an AFCI fault. This was one of
three strings connected to a Sunny Boy 9000TL. I was surprised at how rare
and intermittent the AFCI fault was. The THWN pulled out effortlessly.

I was surprised because usually I spend many hours tracking down AFCI
problems only to find out it's a bad inverter.

Jason
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