California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 19 - Outdoor Wiring › Section 2824 - Overhead Lines

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
						Supports. Open conductors shall be supported on insulators of sufficient
						mechanical and dielectric strength for the application.
(Title 24, Part 3, Section
						  3-710 -
						  84(a).)
(b) Vertical Clearances. All conductors of
						outside wiring shall comply with clearances specified in Rule 37, General Order
						No. 95, 1981 Edition, Rules for Overhead Electric Line Construction of the
						California Public Utilities Commission, which is hereby incorporated by
						reference. The following table for overhead conductors and sign clearances is
						extracted from Tables 1 and 2A of these rules:
Minimum
									 Clearance
Overhead Conductors Nature
									 of Vertical Clearance
750- 20,000
									 volts
Over 20,000
									 volts
1.
Above tracks of railroads which
								  transport freight cars where not operated by overhead contact
								  wires..........................
28 feet
34 feet
2.
Above tracks of railroads operated by
								  overhead contact wires..........................
30 feet
34 feet
3.
Above and along thoroughfares in
								  urban areas and above thoroughfares in rural
								  areas..........................
25 feet
30 feet
4.
Above areas (other than
								  thoroughfares) where it is possible to drive
								  vehicles..........................
25 feet
30
								  feet
5.
Above areas accessible to pedestrians
								  only..........................
17 feet
25 feet
6.
Above
								  structures..........................
12 feet
12
								  feet
7.
Vertical clearance above all signs
								  upon which men can walk..........................
12 feet
12 feet
8.
Vertical clearance above all signs
								  upon which men cannot walk..........................
8 feet
8 feet
9.
Vertical clearance under
								  signs..........................
Prohibited
Prohibited
10.
Horizontal clearance from
								  signs..........................
6 feet
6 feet
(Title 24, Part 3, Section
						  3-710 -
						  85(a).)
(c) Clearance from Buildings. Open
						high-voltage conductors shall be substantially supported independently of
						buildings or structures and shall have a clearance from buildings or structures
						as follows:
(1) They shall be maintained not
						less than 6 feet horizontally from buildings or other structures or any portion
						thereof. Where the vertical distance above ground of conductors of 7,500 volts
						or less is in excess of 35 feet, this horizontal clearance from buildings shall
						be permitted to be less than 6 feet, but shall be not less than 4
						feet.
(2) They shall be kept not
						less than 12 feet vertically above any part of buildings or structures over
						which they pass.
(3) High-voltage
						conductors shall be permitted to be attached to a building at only one point,
						and shall be suitably guarded against accidental contact. There shall be not
						more than 3 feet of open conductor between the point of attachment and the
						point where the conductor enters the conduit or is connected to a
						bushing.
(4) A conspicuous and
						permanent "HIGH VOLTAGE" sign shall be placed on the outside at the point where
						a high-voltage conductor enters the building. Where the conductors are not in
						conduit, a similar sign shall be placed on the inside of the building also, at
						the point of entrance.
(Title 24, Part 3, Section
						  3-710 -
						  85(b).)