A. Factory-assembled and -tested, water-cooled engine, with brushless generator and accessories. B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use. C. Power Rating: Standby. D. Overload Capacity: 110 percent of service load for 1 hour in 12 consecutive hours. E. EPSS Class: Engine generator shall be classified as a Class 24 according to NFPA 110. F. Service Load: 250 kVA. G. Power Factor: 0.8, lagging. H. Frequency: 60 Hz. I. Voltage: 480-V ac. J. Phase: Three-phase, four wire, wye. K. Governor: Adjustable isochronous, with speed sensing. L. Mounting Frame: Structural steel framework to maintain alignment of mounted components without depending on concrete foundation. Provide lifting attachments sized and spaced to prevent deflection of base during lifting and moving. M. Capacities and Characteristics: 1. Power Output Ratings: Nominal ratings as indicated at 0.8 power factor excluding power required for the continued and repeated operation of the unit and auxiliaries. 2. Nameplates: For each major system component to identify manufacturer's name and address, and model and serial number of component.
