One (1) 2500/3500KVA General Electric Transformer, Class OA/FA, Serial No. 246552, 3 phase, 60 hertz. High Voltage: 13,200 Delta, Low Voltage: 480Y/277. KVA rating: 2500 continuous, 55°C rise self cooled. KVA rating: 3125 continuous, 55°C rise forced air. KVA rating: 3500 continuous 65°C rise forced air. Two (2) 21/2% taps above and below. All windings aluminum. Equipped with fans, motors, gauges and bushings. NP 231A3486.