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

[Jay]

Yes they are. 

Their rating is based on wire size, number of strands, material, insulation thickness. 

Insulation material isn’t specified. 

Jay 

Peltz power. 

> On Apr 22, 2021, at 7:35 PM, Jason Szumlanski <jason at floridasolardesigngroup.com> wrote:
> 
> 
> 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
> 
> 
> 
> <20210422_123715-resized-1024.jpg>
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