Assume the lighting transformer is rated 480V/277V 3-phase 4 wire and 500KVA. If the lighting system is to illuminate a warehouse space that is 15000 sqft, and the total light level is to be 80000 lumens, how many florescent lamps T-8 at 32 watts each can be powered? If a system contains two lamps and 1 ballast (see slide 37 lecture 2) with total system lumens 6200, and ballast factor of 0.87, calculated system efficacy. How many systems are needed to illuminate the warehouse? Is the lighting transformer large enough? What are in the lumens/sqft