many of these 3^rd party
“compatibility” tests.
*From:*Brian Mehalic [mailto:br...@solarenergy.org
<mailto:br...@solarenergy.org>]
*Sent:* Thursday, September 19, 2019 1:16 PM
*To:* Bryan Norkunas
*Cc:* RE-wrenches
*Subject:* Re: [RE-wrenches] connector mismatch
rty
> “compatibility” tests.
>
>
>
> *From:* Brian Mehalic [mailto:br...@solarenergy.org]
> *Sent:* Thursday, September 19, 2019 1:16 PM
> *To:* Bryan Norkunas
> *Cc:* RE-wrenches
> *Subject:* Re: [RE-wrenches] connector mismatch
>
>
>
> You say you've se
Yes, I have seen and have copies of many of these 3rd party “compatibility”
tests.
From: Brian Mehalic [mailto:br...@solarenergy.org]
Sent: Thursday, September 19, 2019 1:16 PM
To: Bryan Norkunas
Cc: RE-wrenches
Subject: Re: [RE-wrenches] connector mismatch
You say you've seen many
ct
> connectors/homerun cables needed to complete the install.
>
>
>
>
>
> *Bryan Norkunas*
>
> br...@pv-cables.com
>
>
>
> [image: Description: Description: PV-Cables_Logo_Transparent_Bkgnd_140x140]
>
> *PV-Cables Inc.*
>
> 1155 Redway Drive
>
> PO Box 2562
>
> Re
Of Ray
Sent: Thursday, September 19, 2019 12:08 PM
To: re-wrenches@lists.re-wrenches.org
Subject: Re: [RE-wrenches] connector mismatch
I did some research on the modules we've used over the past 15+ years to see if
we had potential mismatched connector issues. We've used Amphenol H4 connects
sinc
I did some research on the modules we've used over the past 15+ years to
see if we had potential mismatched connector issues. We've used Amphenol
H4 connects since the advent of locking solar connectors. We had
assumed they were compatible back then.
Solarworld switched from MC4 to H4
matched”).
>
>
>
> This is a very important issue so my advice to Wrenches is to keep firm
> and don’t budge on this one.
>
>
>
> Also curious if you all still think you can’t cut off module connectors?
> We need to correct that if so.
>
>
>
> Jason Fisher
Has anyone noticed whether the location in the string or the array
voltage makes a difference in the failures? Is this more an issue at
higher array voltages (>600 v) and at points in the array that the
voltage would be highest? We primarily do low voltage (<200 v) off
grid systems, and
by
replying to this email, and destroy all copies of the original message.
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of August Goers
Sent: Monday, September 09, 2019 6:34 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] connector mismatch
Jason - I'm curious about yo
estroy all copies of the original message.
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of August Goers
Sent: Monday, September 09, 2019 6:34 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] connector mismatch
Jason - I'm curious about your statement on c
urious if you all still think you can’t cut off module connectors?
> We need to correct that if so.
>
> Jason Fisher
> --
> *From:* RE-wrenches on behalf
> of Jerry Shafer
> *Sent:* Thursday, September 5, 2019 11:25 AM
> *To:* RE-wrenches
> *
> Jason Fisher
> From: RE-wrenches on behalf of
> Jerry Shafer
> Sent: Thursday, September 5, 2019 11:25 AM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] connector mismatch
>
> Brian
> Missing the point, yes they are compatible but as we have seen in the real
> w
: [RE-wrenches] connector mismatch
Brian
Missing the point, yes they are compatible but as we have seen in the real
world there are issues. This can give module and micro inverter manufacturers
an out regarding failures and responsibility
Jerry
On Thu, Sep 5, 2019, 1:41 AM Brian Mehalic
mailto:br
Hi Jerry
I’m not sure I understand.
Are you saying that the white paper overrules ( if that’s the correct way to
say it) the UL and OEM guidelines?
Jay
> On Sep 5, 2019, at 8:25 AM, Jerry Shafer wrote:
>
> Brian
> Missing the point, yes they are compatible but as we have seen in the real
Brian
Missing the point, yes they are compatible but as we have seen in the real
world there are issues. This can give module and micro inverter
manufacturers an out regarding failures and responsibility
Jerry
On Thu, Sep 5, 2019, 1:41 AM Brian Mehalic wrote:
> I don’t think “some white paper”
Just to add, l had a lab and l did testing on connectors, we found that
most of the aec issues were under low light. This appeared to be when
iradiance was low and once the irads went up the issue was less likely,
this was because the Male-female contact was not tight enough and under
lower power
I don’t think “some white paper” is sufficient based on Code requirements, UL
standards (6703), and verified field failures. Also see 2020 NEC® 690.33(C) -
now requiring intermatability.
Brian
> On Sep 4, 2019, at 2:06 PM, Jerry Shafer wrote:
>
> Wrenches
> Per some white papers connectors
Everyone,
Just to add to this, I've seen multiple melted connectors that couldn't be
traced to anything other than mixing manufacturers. I've seen some
connectors where you can clearly seeing arcing on the pin itself and
nowhere else. The crimps and the housing were fine. I've postulated it
Wrenches
Per some white papers connectors are interchangeable, this being said l
have had arc issues as a result. FYI there are knock-offs out there to.
Jerry
On Wed, Sep 4, 2019, 1:42 PM Brian Mehalic wrote:
> Are you saying each module has, for example, a positive factory H4 lead
> and a
Are you saying each module has, for example, a positive factory H4 lead and
a negative factory MC4 lead?
I definitely know of H4 problems, both mated with H4s and mismatched.
Brian Mehalic
NABCEP Certified Solar PV Installation Professional™ R031508-59
National Electrical Code® CMP-4 Member
I've recently been looking for the cause of random power drop offs to
zero in an Enphase M215 system with LG260 PV module that was installed
in 2013. Just one inverter in a system of fourteen has been doing this.
Enphase suggested moving the inverter to a different PV module and sure
enough
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