Kaneka GSA? [RE-wrenches]

[Bill Brooks]

So Matt,

What would the appropriate fuse rating be for two series strings in
parallel? 

Assuming the Isc is 1 amp, then Imax = 1 amp x 1.25 = 1.25 amp [690.8(A)].

Therefore you must subtract the 1.25 amps from the 5 amp rating so the max
fuse rating is 3.75 amps

Two strings in parallel have a max current of 2.5 amps (1.25 x 2), and the
minimum series fuse rating is 2.5 amps x 1.25 = 3.1 amps [690.8(B)]. So the
correct number is 3.5 amps.

The only fuse allowable for this arrangement of two strings in parallel is a
3.5 amp fuse. I'd be interested to see if they have this in their
literature.

Bill.


-----Original Message-----
From: Matt Tritt [mailto:solarone at charter.net] 
Sent: Tuesday, August 15, 2006 8:55 AM
To: RE-wrenches at topica.com
Cc: Travis Creswell, Ozark Solar
Subject: Re: Kaneka GSA? [RE-wrenches]



-Hi Travis,

The panel label info. trumps the manual info, so that would be 5 amps. The
actual output from a series string is about 1 amp and they are designed to
be fused for 2 parallel strings with a single fuse.

Matt T
DC Power Systems


--- "Travis Creswell wrote: 
> 
> Can someone tell me what the "series fuse" rating of the Kaneka 60 
> watt module is?
> 
> Any comments on this module would be welcome.
> 
> Thanks in advance,
> 
> Travis Creswell
> Ozark Energy Services
> www.ozarkenergyservices.com
> 
> 
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