NEC 110.26 requires working clearance in front of equipment likely to require calibration, testing, or adjustment while energized. This means a 30 by 36 inch space (or larger) in front of panels, access panels on HVAC equipment and fused disconnects.
Does this requirement extend to non-fused disconnects? I am thinking specifically of the service disconnects often found installed 12-18 inches behind AC compressors in the side or back yard of dwelling units.
