I am in the camp that thinks 110.26 gets abused sometimes. I agree 100% that switch gear, load centers and similar equipment needs good working space and illumination but when you get out there to A/C disconnects I have to ask why it is any different than anything in a device box?
In most environments simply hanging a "do not operate" tag on the breaker should suffice but a lockout kit with a LOTO lock on it is pretty idiot proof.
I have seen the 6 holers in the LOTO with 5 locks in it and another 6 holer in the remaining hole with a couple more locks in it (government job).
