Stanley Black & Decker CS25/28 manual Working In Proximity To Electrical Hazards

ELECTRICAL HAZARDS

The following guidelines must be followed to prevent accidental contact with overhead electrical conductors and/or communication wires and cables. (Ref. ANSI Z133.1-2000)

WORKING IN PROXIMITY TO ELECTRICAL HAZARDS

An inspection shall be made by a qualified arborist to

determine whether an electrical hazard exists before climbing, or otherwise entering, or performing work in or on a tree.

Only qualified line-clearance arborists or qualified line-

clearance arborist trainees shall be assigned to work

where an electrical hazard exists. Qualified line-clear-

ance arborist trainees shall be under the direct supervi-

sion of qualified line-clearance arborist.

A second qualified line-clearance arborists or line-clear-

ance arborist trainees shall be within vision or voice communication during line-clearing operations aloft when line-clearance arborists or line-clearance arborist trainees must approach closer than 10 feet (3.05 me- ters) to any energized electrical conductor in excess of

750 volts (primary conductor) or when:

1.Branches or limbs being removed cannot first be cut (with a pole pruner/pole saw) to sufficiently clear electrical conductors, so as to avoid contact.

2.Roping is required to remove branches or limbs from such electrical conductors. This does not ap- ply to individuals working on behalf of, or employed by, electrical system owners/operators engaged in line-clearing operations incidental to their normal occupation.

Qualified line-clearance arborists and line-clearance arborist trainees shall maintain minimum approach dis- tances from energized electrical conductors in accor- dance with Table 1.

All other arborists shall maintain a minimum approach distance from energized electrical conductors in accor- dance with Table 2.

Branches hanging on an energized electrical conductor shall be removed using non-conductive equipment.

Table 1 – Minimum approach distances from energized conductors for qualified line-clearance arborists and qualified line- clearance arborist trainees.

Nominal Voltage	Includes 1910.269 elevation		Includes 1910.269 elevation		Includes 1910.269 elevation
	factor, sea level to 5000 ft1)		factor, 5001 – 10,000 ft1)		factor, 10,000 – 14,000 ft1)
(kV phase-to-
phase)	ft-in	m	ft-in	m	ft-in		m
0.05 to 1.0	Avoid contact		Avoid contact			Avoid contact
1.1 to 15.0	2–04	0.71	2–08	0.81	2–10		0.86
15.1 to 36.0	2–09	0.84	3–02	0.97	3–05		1.04
36.1 to 46.0	3–00	0.92	3–05	1.04	3–09		1.14
46.1 to 72.5	3–09	1.14	4–03	1.30	4–07		1.40
72.6 to 121.0	4–06	1.37	5–02	1.58	5–07		1.70
138.0 to 145.0	5–02	1.58	5–11	1.80	6–05		1.96
161.0 to 169.0	6–00	1.83	6–10	2.08	7–05		2.26
230.0 to 242.0	7–11	2.41	9–00	2.75	9–09		2.97
345.0 to 362.0	13–02	4.02	15–00	4.58	16–03		4.96
500.0 to 550.0	19–00	5.80	21–09	6.63	23–06		7.17
765.0 to 800.0	27–04	8.34	31–03	9.53	33–10		10.32
	1) Exceeds phase-to-ground; elevation factor per 29 CFR 1910.269.

CS25/28 User Manual ◄ 7