EE WENT TO #33-4 SWITCH HOUSE TO USE HIS PERSONAL CELLULAR PHONE. HE WAS IN AN UNAUTHERIZED ENTRANCE IN THE SWITCH HOUSE. HE OPENED AN UNUSED MOTOR CONTROL CUBICLE THAT HAD ACTIVE 480 VOLT BUS S BARS. HE STATES THAT HE SET A BOTTLE OF WATER INSIDE THE CUBICLE. A FLASH OCCURRED, BURNING HIS FACE, ARMS AND CHEST. EE BEGAN LOSING TIME 12/31/01.