Skip to Main Content

This information is provided free of charge by the Department of Industrial Relations from its web site at 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
Subchapter 5. Electrical Safety Orders
Group 2. High-Voltage Electrical Safety Orders
Article 29. Capacitors (Formerly Article 78)
Return to index
New query

§2891. Overcurrent Protection.

(a) A means shall be provided to detect and interrupt fault current liable to cause dangerous pressure within an individual capacitor.

(b) Single-phase or multi-phase devices shall be permitted to be used for this purpose.

(c) Capacitors shall be permitted to be protected individually or in groups.

(d) Protective devices supplied integrally with a capacitor equipment shall be rated or adjusted in accordance with the recommendations of the manufacturer.

(e) Protective devices installed external to capacitor equipment shall be rated or adjusted to operate in accordance with the requirements of Section 5 of American National Standard ANSI/IEEE Std. 18-1980, IEEE Standard for Shunt Power Capacitors, which is hereby incorporated by reference.

(Title 24, Part 3, Section 460-25.)

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


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

2. Editorial correction of subsection (e) filed 11-3-83 (Register 83, No. 45).

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

Go BackGo Back to Article 29 Table of Contents