For a standard 8-foot ceiling, a pendant light typically hangs 12-20 inches below, which is 84 to 76 inches above the floor. For every additional foot of ceiling height, the pendant-light drop length increases by 3 inches, according to Better Homes and Gardens.
Pendant lights hung over countertops or tables require 30 to 36 inches of clearance between the fixture and the surface below it. Alternatively, the pendant light typically hangs 60 to 66 inches from the floor, when it is placed above a table. When installing a pendant light over a desk, it is hung with only 18 inches of clearance between the fixture and the work surface.
Lights in a foyer are hung at least 7 feet above the floor to provide adequate headroom.