This section applies to branch circuit, feeder, and service conductors rated 600 volts, nominal, or less and run outdoors as open conductors.
(1) Conductors supported on poles must provide a horizontal climbing space of at least the following:
(a) For power conductors below communication conductors, 30 inches.
(b) For power conductors alone or above communication conductors:
(i) 300 volts or less, 24 inches;
(ii) More than 300 volts, 30 inches.
(c) For communication conductors below power conductors with power conductors of:
(i) 300 volts or less, 24 inches;
(ii) More than 300 volts, 30 inches.
(2) Open conductors must provide at least the following minimum clearances:
(a) 10 feet, above finished grade, sidewalks, or from any platform or projection from which they might be reached;
(b) 12 feet, over areas subject to vehicular traffic other than truck traffic;
(c) 15 feet, over areas that are subject to truck traffic; except
(d) 18 feet, over public streets, alleys, roads, and driveways.
(3) Conductors must have a clearance of at least 3 feet from windows, doors, porches, fire escapes, or similar locations. Conductors run above the top level of a window are considered to be out of reach from that window and, therefore, do not have to be 3 feet away.
(4) Conductors must have a clearance of at least 8 feet from the highest point of roofs they pass over.
Exceptions: | (a) Where the voltage between conductors is 300 volts or less and the roof has a slope of at least 4 inches in 12, the clearance from the roofs must be at least 3 feet; or |
| (b) Where the voltage between conductors is 300 volts or less, the conductors do not pass over more than 4 feet of the overhang portion of the roof, and they are terminated at a through-the-roof raceway or approved support, the clearance from the roofs must be at least 18 inches. |
(5) Lamps for outdoor lighting must be located below all live conductors, transformers, or other electric equipment, unless such equipment is controlled by a disconnecting means that can be locked in the open position or unless adequate clearances or other safeguards are provided for relamping operations.
[Statutory Authority: RCW
49.17.010,
49.17.040,
49.17.050, and
49.17.060. WSR 20-21-091, § 296-307-36609, filed 10/20/20, effective 11/20/20. WSR 97-09-013, recodified as § 296-307-36609, filed 4/7/97, effective 4/7/97. Statutory Authority: RCW
49.17.040, [49.17.]050 and [49.17.]060. WSR 96-22-048, § 296-306A-36609, filed 10/31/96, effective 12/1/96.]