[RE-wrenches] connector mismatch

[Brian Mehalic]

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
(520) 204-6639

Solar Energy International
http://www.solarenergy.org

SEI Professional Services
http://www.seisolarpros.com



On Wed, Sep 4, 2019 at 1:22 PM Kent Osterberg <kent at coveoregon.com> wrote:

> 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 doing that proved the problem wasn't with the inverter.
> Intermittent zero output was being caused by the PV module.  In making
> the inverter/module change I found that all the LG 260 modules in this
> system have one MC4 connector and one H4 connector. At present I'm
> convinced the mismatched connector is the actual cause of the problem.
> Anyone else ever notice find PV modules with mixed MC4 and H4 connectors?
>
> Kent Osterberg
> Blue Mountain Solar
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