Hello,

I have seen a couple Otis E401 and E411 installations here on some 40+ story high rises where there is a separate 480V power disconnect safety switch labeled 'GROUP DISCONNECT'. Without looking at the prints, what does that usually power, the control power transformer in each controller which feeds the elevator OCSS boards? Each elevator in the group has their own separate 480V 3-phase power connection for the machine, and there is another separate 480V power feed for the "group".

Thanks.