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

[Blake Gleason]

Bryan,

Thank you for the link.  I am confused by the "PVC" section you
referenced.  Here's the complete text:

  For safety reasons Stäubli prohibits the use of PVC cables. Cables made
> from PVC can be connected to MC4-Evo 2 since the insulation material of the
> connector (Polyamide) is suitable to be connected to PVC. PVC cables
> usually have an upper limiting temperature of 70 °C, in fixed installations
> sometimes 80 °C.


THHN/THWN-2 is made with PVC insulation, so I assume that it falls under
the category of a "PVC cable."

So, the first sentence seems to say that it's not allowed by Staubli.  But
then the second sentence seems to say that is IS allowed.  And then the
third sentence doesn't seem to be contemplating the most common PVC wire
type of all (in the US), which is THHN/THWN-2, which has a 90 degree
rating?!

Can you help un-confuse me?

Thank you!
Blake

On Mon, Apr 26, 2021 at 8:55 AM Bryan Norkunas <Bryan at pv-cables.com> wrote:

> Trying this again since my first link didn’t work, here is the link to the
> MFG specs for NON PV , low DC applications:
>
>
>
> https://ec.staubli.com/AcroFiles/Technical%20Info/PV_SOL-LVDC_(en).pdf
>
>
>
>
>
> For safety reasons Stäubli prohibits the use of thermoplastic PVC
> insulation cables.
>
>
>
>
>
>
>
>
>
> Bryan Norkunas
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
> Behalf Of *Chris Sparadeo
> *Sent:* Friday, April 23, 2021 8:30 AM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] MC4s are listed for THWN, right?
>
>
>
> Also have to appreciate the 8 screws holding that 6x6”.
>
>
>
> On Fri, Apr 23, 2021 at 12:13 AM Jay <jay.peltz at gmail.com> wrote:
>
> 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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> --
>
> Chris Sparadeo
>
>
>
>
>
> C_802-369-4458
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-- 

Blake Gleason, PE | Employee Owner
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