[RE-wrenches] Combined Inverter Fuse sizing

[Mac Lewis]

Hi Allen,

I always use the max output current method, not the fuse rating downstream.

Good Luck


On Sat, Oct 24, 2015 at 5:50 AM, Allen Frishman <amfrish at aeonsolar.com>
wrote:

> Wrencher's,
> Quick question regarding sizing the fuse for a combined group of
> inverters.   If I have six 10KW three phase inverters each with a max AC
> current of 30A they each require a 3 pole 40 A breaker.   If I then take
> the combined output of the AC combiner panel I see two possible options for
> sizing the combined fuse size.
>
> 6 inverters x 40A breakers each = 240A so I need to use a 250A fuse
> 6 Inverters x 30A max output each = 180A x 1.25 = 225A Fuse
>
> Seems like both are acceptable options since all wire will be protected.
>
> All feedback is appreciated.
>
> *Al Frishman*
> AeonSolar
>
> *(917) 699-6641 <%28917%29%20699-6641> - cell*
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> *www.aeonsolar.com <http://www.aeonsolar.com/>*
>
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-- 



Mac Lewis

*"Yo solo sé que no sé nada." -Sócrates*
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