Hint: a double hole-in-one
See the answer below.
Golfers strive to achieve that elusive hole-in-one shot, but electricians should strive for no holes-in-one.
Section 110.12(A) has been requiring unused openings, other than those needed for the operation of the equipment, or for mounting purposes, or as part of the design of the equipment, to be closed in a manner that provides protection equivalent to the walls of the equipment, for the 35 years that I have been an electrician, and probably longer! This installer chose to ignore this long-standing Code requirement. For a few cents, some knockout seals could have been installed to close up these two holes in the bottom of this feeder disconnect switch.
Another problem here is the lack of identification for each ungrounded conductor. All three are black. Section 215.12(C)(1) requires ungrounded feeder conductors to be identified by phase, or line, and system where the premises has feeders supplied by more than one nominal voltage system. This property has both a 240V delta service and a 120/208V wye service providing power to feeders and branch circuits. These feeder conductors need to be properly identified in accordance with Sec. 215.12(C).
