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Power requirements for fire pumps

Question asked by agathadoctor on Dec 27, 2019
Latest reply on Dec 27, 2019 by chiefns830

NFPA 409 latest version states two fire pumps are required for Aircraft Hangars.  Does NFPA 20 require alternate power for each individual fire pump?  How does NFPA 20 define independent power source?  Separate tap off the main?  Different substation?

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