Outside Conductors, 600 Volts or Less

Certain requirements apply to branch-circuit, feeder, and service conductors run outdoors as open conductors that are rated 600 volts, nominal, or less.

Conductors supported on poles must provide a horizontal climbing space no less than the following:

• Power conductors below communication conductors: 30 inches
• Power conductors alone or above communication conductors: 24 inches for 300 volts or less; 30 inches for more than 300 volts
• Communication conductors below power conductors: Same as power conductors

Lamps for outdoor light must be located below live conductors, transformers, and other electric equipment unless the following conditions are met:

• The equipment is controlled by a disconnection means that can be locked in the open position.
• Adequate clearances or other safeguards are provided for re-lamping operations.

To learn more about Construction Electrical Safety visit our Construction Electrical Safety Online Training web page.