[RE-wrenches] "Qualified solar electric property"?

[Howie Michaelson]

Hi folks,
I have a client that I'm doing a larger inverter and battery upgrade. We're
are putting in 3Sol-Ark 15k inverters and 7 Fortress 18.5kwh units. The
client is wanting manufacturer certification that the equipment is
"qualified solar electric property". I don't know that I've ever run across
this type of request before or that I've seen manufacturers supply such
documentation. Is this something that anyone is familiar with? Did I miss
something here?
Thanks,
Howie
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