[RE-wrenches] SolarEdge inverter blowing fuses

[jay]

HI Dave,

Which exact fuses do they have installed?

I’m guessing they are blowing due to not being constant load rated fuses and summer higher temps.


jay

peltz power

> On Nov 1, 2021, at 2:26 PM, Dave Tedeyan <dave at sungineersolar.com> wrote:
> 
> 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
> 
> -- 
>  <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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