“In determining the arc flash boundary zones in your electrical rooms, do you make any allowances (provisions) for permanent, existing barriers, walls, obstructions when using remote racking systems to rack in/out breakers”? In other words, do you allow personnel to reside behind a permanent barrier when remotely racking a breaker wearing a clothing category less than that specified for the IEEE-calculated energy at barrier’s distance from the equipment. This pertains to calculated arc flash boundary distances that extend beyond the block wall of any electrical room.”