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Subchapter 5. Electrical Safety Orders
Group 1. Low-Voltage Electrical Safety Orders
Article 11. Grounding
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§2395.42. Equipment Fastened in Place or Connected by Permanent Wiring Methods (Fixed).

Exposed noncurrent-carrying metal parts of fixed equipment that may become energized shall be grounded under any of the following conditions:

(a) Where within 8 feet vertically or 5 feet horizontally of ground or grounded metal objects and subject to contact by persons.

(b) Where located in a wet or damp location and not isolated.

(c) Where in electrical contact with metal.

(d) Where in a hazardous (classified) location as covered by Article 59.

(e) Where supplied by a metal-clad, metal-sheathed, or grounded metal-raceway wiring method.

(f) Where equipment operates with any terminal at over 150 volts to ground.

(g) Grounding of equipment mounted on poles shall comply with the Rules of Overhead Electric Line Construction of the California Public Utilities Commission, General Order No. 95.

Exceptions: to Section 2395.42: Exposed noncurrent-carrying metal parts of the following types of fixed equipment need not be grounded:

1. Enclosures for switches or circuit breakers used for other than service equipment and accessible to qualified persons only;

2. Electrically heated appliances that are permanently and effectively insulated from ground;

3. Distribution apparatus, such as transformer and capacitor cases, mounted on wooden poles, at a height exceeding 8 feet (2.44 m) above ground or grade level; and

4. Listed equipment protected by a system of double insulation, or its equivalent, and distinctively marked as such.

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


1. Repealer and new section filed 3-20-79; effective thirtieth day thereafter

(Register 79, No. 12). For history of former section, see Register 75, No. 42.

2. Amendment filed 2-1-83; effective thirtieth day thereafter (Register 83, No. 6).

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

4. Amendment filed 8-27-86; effective thirtieth day thereafter (Register 86, No. 37).

5. 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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