Current-carrying parts need not be guarded if they are maintained at the following distances above the floors which may be occupied by persons:
Voltage of Conductors | Elevation (in feet) |
300-750 | 7 |
750-2,500 | 7 |
2,500-7,500 | 8 |
7,500-30,000 | 9 |
30,000-70,000 | 10 |
70,000-100,000 | 12 |
Over 100,000 | 14 |
34 Pa. Code § 39.106
This section cited in 34 Pa. Code § 39.143 (relating to isolation by elevation); 34 Pa. Code § 39.160 (relating to guarding live parts of switches and automatic cut-outs not installed on switchboards); and 34 Pa. Code § 39.199 (relating to guarding or isolating live parts).