|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.|
| Return to index
Systems to be Grounded. Systems that supply premises wiring shall be grounded as follows:
(a) Two-Wire Direct Current Systems. Two-wire DC systems operating at over 50 volts through 300 volts between conductors shall be grounded.
Exceptions: 1. A system equipped with a ground detector and supplying only industrial equipment in limited areas.
2. A rectifier derived DC system supplied from a grounded AC system.
3. DC Fire Alarm Circuits having a maximum current of 0.030 amperes.
(b) Three-Wire Direct-Current Systems. The neutral conductor of all 3-wire DC systems shall be grounded.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
1. Editorial correction filed 11-2-83 (Register 83, No. 45).
2. Amendment of section and Note filed 5-5-2008; operative 5-5-2008. Submitted to OAL for printing only pursuant to Labor Code 142.3(a)(3) (Register 2008, No. 19).
Go Back to Article 11 Table of Contents