I am working on a project (group home - non ambulatory) with a limited service fire pump taking suction from a tank. Main power is from the public utility and there is a back-up generator. The generator is hooked up through a standard transfer switch, which I am not sure is listed for use with a fire pump. The generator is sized to run the fire pump and emergency lighting only. The switch is satisfactorily sized, the system tested fine and the AHJ has signed off on it. Is there a problem? If this was a normal fire pump, I would say yes, but being limited service, I'm not sure. I know that the pumps can only be used when specifically approved by the AHJ, but don't know if they can accept a non-standard arrangement.

Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080 _______________________________________________
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