EXEMPTION: | A fan is considered guarded if it meets all of the following requirements: |
| 1. It is in a basement, tower, or room locked against unauthorized entrance. |
| 2. The vertical clearance in passageways between the floor and power transmission beams, ceiling, or any other objects, is not less than five feet six inches. |
| 3. The intensity of illumination must be a minimum of ten foot candles when the area is occupied. |
| 4. The footing is dry, firm, and level. |
| 5. The route followed by the oiler or authorized personnel is protected in such a manner as to prevent accident. |
| 6. The periphery of the fan blade is covered by a shroud. |