Lets see if I can explain this problem. There is a main distribution panel with 4 operating handles. They want to add another disconnect to feed another service in another section in the factory. They want to install a 3 pole 400 amp disconnect, then go to a Ct cabinet, then to an 800 amp main breaker panelboard. One problem is that the main distribution panel (MDP) is custom built and so they can't get a 3 pole 400 amp disconnect, but want to install 2- 200 amp 3 pole breakers and twin the service to the new CT cabinet. My first question to them would be that they needed a common tie handle to make sure that both breakers would trip out at the same time. Any other thoughts here?
Harold
