fire pump

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arkman

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480V service drop. 200A fused disconnect feeds a panel board. 90A breaker feeds a 75kva 408V to 102/208 transformer. the transformer is 300ft from the 90A breaker. the transformer feeds a 2600sqft building that is 20' away from the transformer. My question, can a fire pump that protects the 2600sqft building be feed from the transformer or does a seprate circuit from the main service have to be installed ?
 
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laidman

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Re: fire pump

Check 695.3 (A)(1)the fire pump can be fed from ahead of the main service disconnect.

You want that pump to run even if the main disconnect is turned off. 695.6(A)It should be fed by a feeder run outside of the building or encased in at least 2 inches of concrete

[ March 04, 2005, 07:28 AM: Message edited by: laidman ]
 
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