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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