| Note: | The distance from the point-of-operation guards to the danger line depends on the size of the opening. The required distances are outlined in the table below: |
| Guarding line or distance of opening from point of operation hazard (inches) |
Maximum width of opening (inches) |
1/2 to 1 1/2 |
1/4 |
| 1 1/2 to 2 1/2 | 3/8 |
| 2 1/2 to 3 1/2 | 1/2 |
| 3 1/2 to 5 1/2 | 5/8 |
| 5 1/2 to 6 1/2 | 3/4 |
| 6 1/2 to 7 1/2 | 7/8 |
| 7 1/2 to 12 1/2 | 1 1/4 |
| 12 1/2 to 15 1/2 | 1 1/2 |
| 15 1/2 to 17 1/2 | 1 7/8 |
| 17 1/2 to 31 1/2 | 2 1/8 |