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Subchapter 5. Electrical Safety Orders
Group 1. Low-Voltage Electrical Safety Orders
Article 11. Grounding
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§2395.25. Conductor to Be Grounded-- Alternating-Current Systems.

For AC premises wiring systems the conductor required to be grounded by Section 2395.5 shall be as follows:

(a) One conductor of a single-phase, two-wire system shall be grounded;

(b) The neutral conductor of a single-phase, three-wire system shall be grounded;

(c) The common conductor of a multiphase system having one wire common to all phases shall be grounded;

(d) One phase conductor of a multiphase system where one phase is grounded shall be grounded; and

(e) The neutral conductor of a multiphase system in which one phase is used as a neutral conductor 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. Repealer and new section filed 8-27-86; effective thirtieth day thereafter (Register 86, No. 37).

3. 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).

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