Thanks to all of you who tried to help answer my questions. For those of you who just chimed in to say that I'm not qualified to work on such a system, that is exactly what I'm trying do do--become qualified. That starts with asking people who may be more experienced than me with this type of switch gear. For you pencil-pushers out there...I appreciate your concern for my safety, but stick to your computers and try not to get your hands dirty. I don't plan on working on this gear until I fully understand how and what it operates. I've operated and worked on numerous MV switches in the past...just none like the aforementioned one. I'll update those of you who may be interested what I found out about this switch: It's a 15.5 kv-rated switchway with vacuum interrupters and SF6 gas insulation. It has a main disconnect which de-energizes all 3 switchways via manual interruption or electronic interruption in the case of a fault. Also, each of the 3 individual switchways can be de-energized by rotating the puffer switch to the "open" position. The "ground" position can be used to bleed off any stored capacitor voltage or to ground the incoming MV cables. I still need to contact the contractor who installed the gear to determine how the switch was wired before I de-energize it and work on the gear. Thanks again to those of you who actually tried to help.