In order to meet the NEC (NFPA 70) requirements for emergency service, how long must the on-site fuel supply be able to operate the prime mover at full engine-generator output?
In order to meet the NEC (NFPA 70) requirements for emergency service, how long must the on-site fuel supply be able to operate the prime mover at full engine-generator output?
The National Electrical Code (NEC) mandates that the on-site fuel supply for emergency services must be sufficient to operate the prime mover at full engine-generator output for a minimum of 3 hours. Therefore, the correct answer is 3 hours.
REFER TO FPH 10-6