Skip to Main Content


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 https://www.dir.ca.gov/od_pub/disclaimer.html.
 
Subchapter 5. Electrical Safety Orders
Group 1. Low-Voltage Electrical Safety Orders
Article 47. Switches
Return to index
New query

§2480.7. Connection of Switches.


(a) Single-throw knife switches and switches with butt contacts shall be so connected that the blades are deenergized when the switch is in the open position.

(b) For installations built on or after May 5, 2008 single-throw knife switches, molded-case switches, switches with butt contacts, and circuit breakers used as switches shall be connected so that the terminals supplying the load are deenergized when the switch is in the open position.

Exception: Blades and terminals supplying the load of a switch may be energized when the switch is in the open position where the switch is connected to circuits or equipment inherently capable of providing a backfeed source of power. For such installations, a permanent sign shall be installed on the switch enclosure or immediately adjacent to open switches that read, "WARNING-- LOAD SIDE TERMINALS MAY BE ENERGIZED BY BACKFEED."

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

HISTORY

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

2. Amendment deleting subsection (a) designation only filed 8-27-86; effective thirtieth day thereafter (Register 86, No. 37).

3. Amendment of section heading, section and Note filed 5-5-2008; operative 5- 5-2008. Submitted to OAL for printing only pursuant to Labor Code142.3(a)(3) (Register 2008, No. 19).

Go BackGo Back to Article 47 Table of Contents