ELECTRICAL BUS SYSTEM

An electro-optic element comprises a first substrate; a second substrate generally parallel to the first substrate; a first bus having a first bus segment disposed on an inner surface of the first substrate and extending along a first portion of a perimeter of the first substrate and a second bus segment disposed on an inner surface of first substrate and extending along a second portion of the perimeter of the first substrate. The second bus segment is in a spaced apart relationship with first bus segment. A second bus has a third bus segment and a fourth bus segment is disposed on the second substrate, each extending along a portion of the perimeter of the second substrate. A controller is configured to be in selective electrical communication with first and second buses and to independently control a voltage applied to each of the bus segments.