A. Summary 1. The work required under this section of the specifications consists of the installation of the complete Engine Driven Emergency Power Supply System. All materials and devices which are in integral part of this system shall be provided under this section of the specifications. 2. The Emergency Power Supply System (EPSS) shall consist of an engine driven generator set, which contains an engine directly coupled to an electric generator, together with the controls, accessories, transfer devices, and fuel supply to provide electric power for the duration of any failure of the normal power supply. a. Automatic Transfer Switch (ATS): An automatic transfer switch is self-acting equipment for transferring one or more load conductor conections from one power source to another.
