Mercury Vapor Lamp: LP-AI-MV250 Wattage (W): 252 Lamp Voltage (V): 130.1 Lamp Current (A): 2.14 Lumens Output (Lm): 14258.7 Light Effency (Lm/W): 56.6 Power Ratio cosˆ: 0.91 Color Temperature(K): 4139 Color Rendering (Ra): 40