[RE-wrenches] Complying with 690.9(B)

[Christopher Warfel]

I've attached a 2009 product specification from Littlefuse.  Their phone 
number is:1-800-TEC-FUSE.


Chris

On 10/5/2022 11:13 AM, Mac Lewis via RE-wrenches wrote:
> Hello Wrenches,
>
> I have an inspector who doesn't like my heavy duty square D disconnect 
> loaded with 20A Littelfuse FLSR RK5 Littelfuses for use as a OCPD and 
> disconnect on a PV circuit.  I am operating below the 300Vdc rating 
> for this fuse but I'm having trouble finding documentation that states 
> that this fuse is listed for use in PV systems.
> Does anyone know if these fuses have this listing for PV 
> specifically?  Its not easy to find if they do.
> Or perhaps a solar listed fuse designed for this disconnect?
>
> If not, is there another disconnecting device that can work for this?  
> I am looking closely at the MNPV6-250 DISCO but again, the 300Vdc 
> breakers that come with this are listed to DC branch circuit 
> protection (UL 489A, IEC / EN 60947-2) not necessarily calling out PV 
> specifically.
>
> Any input is appreciated!
>
> Thanks
>
> -- 
>
>
>
> Mac Lewis
>
> *
>
> "Yo solo sé que no sé nada." -Sócrates
>
> *
>
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-- 
             Christopher Warfel
                      ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
                                 401-466-8978
<http://entech-engineering.com>

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