Square D has very good pressure switches with unloaders. Pricier than
Furnas. I believe without looking it up that NFPA 70 requires that a
disconnect be within sight of any motor over 1/8 hp. I may have that
hp rating confused with requiring a thermal cut-out and the switch is
required at a higher hp rating but you get the principle.

On Sat, Feb 20, 2010 at 4:09 PM, Tom Duross <[email protected]> wrote:
> I love to digress..
> Does anyone know of a decent replacement pressure switch with unloader for
> an air compressor?  Those old Furnas switches really tee me off and seem
> problematic as heck.  Line switch usually.
> Tom
>
>
> It's a good idea if you need to service the compressor, but I don't think
> it's required in NFPA 13. Maybe in the elec. Code.
>
>
> Does an air compressor for a pre-action system have to be wired on a
> dedicated circuit?
>
> The release panel?
>
>
>
> Thanks,
>
> Greg
>
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-- 
Ron Greenman
Instructor
Fire Protection Engineering
Bates Technical College
Tacoma, WA

Member:
SFPE, ASCET, NFPA, AFSA, NFSA AFAA, NIBS, WSAFM, WFC
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