Employees were installing an inline pole to increase the ground clearance of a sagging power line. Once the new pole was in place, the employee in the bucket truck attached the energized line to the jib on the new pole. As the employees finished emplacing the new pole, the energized line (7,620 volts) broke loose from the jib on the new pole. Due to the sag in the energized wire, it dropped low enough to contact the boom of the digger derrick truck. Two employees standing next to the truck sustained an electrical shock.