Original Version

Rule 54.11-F

54.11-F.    Climbing Space

(1)    Where Insulators Are in vertical or Horizontal Climbing Position, more than 750 volts: Climbing space shall be maintained through the levels of conductors for a vertical distance of not less than 4 feet above the top conductor and not less than 4 feet below the lowest conductor.

EXCEPTION:    For a circuit at the top of the pole, the climbing space shall be maintained to the lowest conductor of the circuit on the climbing side of the pole (See Figure 54-10.).

The climbing space shall be a square of horizontal dimensions tabulated below and one side of the climbing space shall pass through the center line of the pole.

(2)    Dimensions Where Conductors Are Dead-ended In vertical Configuration: Climbing space through conductors shall be a square of the horizontal dimensions tabulated below, and shall be located either on one side or a quadrant of the pole (See Figure 54-11).

Strikeout and Underline Version

Rule 54.11-F

54.11-F.    Climbing Space

(1)    WhereInsulators are in Vertical or Horizontal Position, (Vertical or Triangular Configuration), more than 750 volts: C1Lmbing space shall be maintained through the levels of conductors for a vertical distance of not less than 4 feet above the top conductor and not less than 4 feet below the lowest conductor.

EXCEPTION:    For a circuit at the top of the pole, the climbing space shall be maintained to the lowest conductor of the circuit on the climbing side of the pole (See Figure 54-10).  For a pole top circuit that includes buck position conductors located within a vertical distance of 4 feet or less from the lowest associated line conductor, climbing space need only be maintained to the lowest conductor in the buck position on the climbing side of the pole.

The climbing space shall be a square of horizontal dimensions tabulated below and one side of the climbing space shall pass through the center line of the pole. (see Figure 54–10). Where conductors are deadended (e.g., line and buck or corner construction) below pole top in triangular configuration, 750 - 46,000 volts, climbing space can be located in a quadrant of the pole. When quadrant climbing space is used, the dimensions of the square shall be 42 inches.

(2)    Dimensions of climbing space Where Conductors are Deadended In vertical Configuration: Climbing space through conductors shall be a square of the horizontal dimensions tabulated below, and shall be located either on one side or a quadrant of the pole (See Figure 54-11). For a circuit at the top of the pole refer to the exception in Rule 54.11-F1.

Final Version

Rule 54.11-F

54.11-F.    Climbing Space

(1)    Where Insulators are in Vertical or Horizontal Position (Vertical or Triangular Configuration) More than 750 Volts: Climbing space shall be maintained through the levels of conductors for a vertical distance of not less than 4 feet above the top conductor and not less than 4 feet below the lowest conductor.

EXCEPTION:    For a circuit at the top of the pole, the climbing space shall be maintained to the lowest conductor of the circuit on the climbing side of the pole. For a pole top circuit that includes buck position conductors located within a vertical distance of 4 feet or less from the lowest associated line conductor, climbing space need only be maintained to the lowest conductor in the buck position on the climbing side of the pole.

The climbing space shall be a square of horizontal dimensions tabulated below, and one side of the climbing space shall pass through the center line of the pole (See Figure 54-10). Where conductors are deadended (e.g., line and buck or corner construction) below pole top in triangular configuration, 750 - 46,000 volts, climbing space can be located in a quadrant of the pole. When quadrant climbing space is used, the dimensions of the square shall be 42 inches.

(2)    Dimensions of Climbing Space Where Conductors are Deadended in Vertical Configuration: Climbing space through conductors shall be a square of the horizontal dimensions tabulated below, and shall be located either on one side or a quadrant of the pole (See Figure 54-11). For a circuit at the top of the pole, refer to the exception in Rule 54.11–F1 .