This information is provided free of charge by the Department of Industrial Relations from its web site at www.dir.ca.gov. These regulations are for the convenience of the user and no representation or warranty is made that the information is current or accurate. See full disclaimer at http://www.dir.ca.gov/od_pub/disclaimer.html.

Subchapter 5. Electrical Safety Orders
Group 2. High-Voltage Electrical Safety Orders
Article 6. Grounding (Formerly Article 55)

Return to index
New query

§2741. Impedance Grounded Neutral Systems.

(a) Grounding of impedance grounded neutral systems shall be accomplished in a manner illustrated by Diagram 2741, if practicable.

(b) If the impedance grounded neutral conductor is carried into the premises, it shall be identified, as well as fully insulated with the same insulation as the phase conductors.

(c) The system neutral shall not be connected to ground except through the neutral grounding impedance.

(d) Equipment grounding conductors shall be permitted to be bare and shall be connected to the ground bus and grounding electrode conductor at the service entrance equipment. (See Diagram 2741.)

(Title 24, Part 3, Section 250-153.)

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

HISTORY

1. Editorial correction filed 11-2-83 (Register 83, No. 45).

2. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No. 1).

Diagram 2741 IMPEDANCE GROUNDED SYSTEM

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

HISTORY

1. Repealer of Diagram 2741(a) and new Diagram 2741 filed 12-10-87; operative 1-9-88 (Register 88, No. 1).

2. Change without regulatory effect providing more legible versions of Diagram 2741 filed 11-6-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 45).

Go BackGo Back to Article 6 Table of Contents