[RE-wrenches] SolarEdge inverter blowing fuses

[Dave Tedeyan]

Hi All,

I am servicing a system that keeps blowing fuses on the AC side, although it
 appears that everything is sized correctly. It is a SolarEdge SE11400A-US
inverter.
 Max continuous output current is 47.5A x 1.25 = 59.4A. There is a GE
TG3222R
 60A AC disconnect, and it is wired up with #6 THHN wire. The terminals
were tight
 and there was no evidence of arcing or burning in the past. This is
indoors, and not
 exposed to sunlight. No extra conductors are in the conduit.

But they say that they need to replace a fuse roughly once per month. Has
anyone
 seen this before? Could there be some kind of fault in the inverter itself
that
 occasionally induces extra current? Is there any way to tweak the settings
so that it
 actually produces a bit more than 11.4kw? I appreciate your thoughts.

Cheers,
Dave

-- 
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com <http://www.sungineersolar.com/>
c: (607) 288-2898
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