Stanley CS11, User Manual

9

ELECTRICAL HAZARDS

Table 2 - Minimum approach distances to energized conductors for persons other than qualifi ed 

line-clearance arborists and qualifi ed line- clearance arborist trainees. 

Nominal Voltage

kV phase-to-phase

1)

Distance

ft-in

m

0.0 - 1.0

10-00

3.05

1.1 - 15.0

10-00

3.05

15.1 - 36.0

10-00

3.05

36.1 - 50.0

10-00

3.05

50.1 - 72.5

10-09

3.28

72.6 - 121.0

12-04

3.76

138.0 - 145.0

13-02

4.00

161.0 - 169.0

14-00

4.24

230.0 - 242.0

16-05

4.97

345.0 - 362.0

20-05

6.17

500.0 - 550.0

26-08

8.05

785.0 - 800.0

35-00

10.55

1)

 Exceeds phase-to-ground.

The tie-in position should be above the work area and located in such a way that a slip would swing the arborist away 

from any energized electrical conductors or other identi

fi

 ed hazard.

While climbing, the arborist should climb on the side of the tree that is away from energized electrical conductors as re-

quired in Tables 1 and 2.

Footwear, including lineman’s overshoes, having electrical-resistant soles, shall not be considered as providing any mea-

sure of safety from electrical hazards.

Rubber gloves, with or without leather or other protective covering, shall not be considered as providing any measure of 

safety from electrical hazards.

Ladders, platforms and aerial devices, including insulated aerial devices, shall be subject to minimum approach distances 

in Table 1 and 2.

Aerial devices and attached equipment (such as chippers) contacting energized electrical conductors shall be considered 

energized. Contact shall be avoided, except where emergency rescue procedures are being carried out. Emergency res-

cue should be performed in accordance with 4.3.

Storm Work and Emergency Conditions-Line Clearance

Line clearance shall not be performed during adverse weather conditions such as thunderstorms, high winds and snow 

and ice strorms.

Quali

fi

 ed line-clearance arborists and quali

fi

 ed line-clearance arborists trainees performing line clearance in the aftermath 

of a storm or under similar conditions shall be trained in the special hazards associated with this type of work.

Line-clearance operations shall be suspended when storm work or emergency conditions develop involving energized 

electrical conductors. Electrical system owners/operators shall be noti

fi

 ed immediately.