California Administrative Code

Metallic cable trays may be used as equipment grounding conductors only where continuous maintenance and supervision ensure that qualified persons will service the installed cable tray system.

(a) Grounding of solidly grounded neutral systems shall be accomplished in a manner illustrated by Diagram 2740 if the system neutral is available at the service entrance equipment. (b) If the grounded neutral conductor is carried into the premises, it shall be identified as the …

(a) Faceplates for flush-mounted snap switches. Snap switches mounted in boxes shall have faceplates installed so as to completely cover the opening and seat against the finished surface. (b) Grounding. For installations built on or after May 5, 2008 snap switches, including dimm…

(a) If any Person in proceedings before an appointed Hearing Officer disobeys or resists any lawful order or refuses, without substantial justification, to respond to a subpoena, subpoena duces tecum, or refuses to take the oath or affirmation as a witness or thereafter refuses t…

Flexible cords not smaller than No. 18, and tinsel cords or cords having equivalent characteristics of smaller size approved for use with specific appliances, shall be considered as protected against overcurrent by the overcurrent devices described in Section 2390.1. (Title 24, P…

The conductor shall not be bent to a radius less than eight times the overall diameter for non-shielded conductors or twelve times the diameter for shielded or lead-covered conductors during or after installation. (Title 24, Part 3, Sections 300-34.)

(a) A conductor of a flexible cord or cable that is used as a grounded conductor or an equipment grounding conductor shall have a continuous identifying marker readily distinguishing it from the other conductor or conductors. (1) Conductors having a continuous green color or a co…

(a) Buckets containing hot asphalt or pitch shall not be carried on ladders. (b) Not more than one bucket of hot asphalt or pitch shall be carried at one time by a worker on a roof having a slope ratio of 6 vertical in 12 horizontal (6:12) or steeper. (c) Buckets used in carrying…

Training standards and trainee agreements shall contain graduated wage schedules to be paid trainees that provide for reasonable uniform progressive wage increases during the term of training, except where other schedules are provided in applicable collective bargaining agreement…

Emergency circuit wiring shall be kept entirely independent of all other wiring and equipment and may not enter the same raceway, cable, box, or cabinet or other wiring except either where common circuit elements suitable for the purpose are required, or for transferring power fr…

Provisions shall be made for sufficient diffusion and ventilation of gases from storage batteries to prevent the accumulation of explosive mixtures. See General Industry Safety Orders, Section 5185 for additional requirements.

(a) The entry employer shall ensure that each entry supervisor: (1) Is familiar with and understands the hazards that may be faced during entry, including information on the mode, signs or symptoms, and consequences of the exposure; (2) Verifies, by checking that the appropriate …

§ 2449.2. Assumption of Obligations by Reinsurers. [Repealed] This database is current through 5/1/26 Register 2026, No. 18. Source: https://govt.westlaw.com/calregs/Document/ICFF28ACA5C2F11EC9C68000D3A7C4BC3?viewType=FullText&originationContext=documenttoc&transitionType=Categor…

Definitions for certain terms used in Article 6 and Appendixes A through C are located in Article 1, Section 3207 and Article 5, Section 3281. Definitions for the terms used in Appendix D are located in Appendix D and only apply to Appendix D. (Title 24, Part 2, Section 2-8250(c)…

This Article covers all buildings or that part of a building or structure designed or intended to be used for dramatic, musical, motion picture projection, or similar purposes and to areas of motion picture and television studios which incorporate assembly areas. (Title 24, Part …

External hinged doors or covers for outdoor equipment shall be provided with stops to hold them in the open position. Cover plates intended to be removed for inspection of energized parts or wiring shall be locked or secured by other approved means and equipped with lifting handl…

Flexible conductors used to supply portable stage equipment shall be Type S, SO, ST, or STO. Exception: Reinforced cord shall be permitted to supply stand lamps where the cord is not subject to severe physical damage and is protected by an overcurrent device rated at not over 20 …

Bonding shall be provided where necessary to assure electrical continuity and the capacity to conduct safely any fault current likely to be imposed. (Title 24, Part 3, Section 250-70.)

A metallic enclosure shall be provided on the mobile machine for enclosing the terminals of the power cable. The enclosure shall include provisions for a solid connection for the grounding terminal to effectively ground the machine frame. Ungrounded conductors shall be attached t…

(a) A Board agent may conduct an informal conference to clarify the issues and explore settlement of the case. No record shall be made at such a conference. (b) A Board agent shall give reasonable notice of such conference to each party directed to attend.

The braid on open runs of braid-covered insulated conductors shall be flame-retardant or shall have a flame-retardant saturant applied after installation. This treated braid covering shall be stripped back a safe distance at conductor terminals, according to the operating voltage…

Where a water system as described in Section 2395.81 is not available, the grounding connection shall be made to any of the electrodes specified in (a) through (d) below, where available. (a) The metal frame of the building, where effectively grounded. (Title 24, Part 3, Section …

(a) All machinery and equipment: (1) shall be designed or engineered to safely sustain all reasonably anticipated loads in accordance with recognized engineering principles; and (2) shall not be used or operated under conditions of speeds, stresses, loads, or environmental condit…

Portable plugging boxes shall comply with (a) through (d) below. (a) Enclosure. The construction shall be such that no current-carrying part will be exposed. (b) Receptacles and Overcurrent Protection. Each receptacle shall have a rating of not less than 30 amperes, and shall hav…

Energized parts shall be so located or enclosed as to prevent accidental contact by persons or objects. (Title 24, Part 3, Section 110-31.)

(a) Flexible cords and cables shall be listed for extra-hard usage. When used outdoors, flexible cords and cables shall also be listed for wet locations and shall be sunlight resistant. (b) Single conductor cable shall be size No. 2 or larger. (c) Open conductors are prohibited e…

Work on or from structures shall be discontinued when adverse weather, such as high winds, ice on structures, or the progress of an electrical storm in the immediate vicinity, makes the work hazardous, except during emergency restoration procedures.

Conductors in size 1/0 or larger shall be permitted to be run in multiple. Where conductors are run in multiple, they shall be so installed and terminated to prevent overloading of any conductor. Where conductors are run in multiple, the conductors shall be connected together at …

Pursuant to this article: (a) Revenue earned and resulting costs of apprenticeship classes will be based on the attendance of apprentices only. (b) Any joint agreement shall be completed prior to the beginning of course instruction and shall be reviewed annually, or as mutually a…

(a) Pull boxes shall be of sufficient size and design to accommodate the installation and maintenance of all conductors installed in them without damaging the insulation on any conductor. (Title 24, Part 3, Section 3-370-51(a).) (b) Where permanent barriers are installed in a box…

(a) Lead-in or aerial-drop cables from a pole or other support, including the point of initial attachment to a building or structure, shall be kept away from electric light, power, Class 1, or nonpower-limited fire alarm circuit conductors so as to avoid the possibility of accide…

Motors driving single or multiple d.c. generators supplying a system operating on a cyclic load basis do not require running overcurrent protection, provided that the thermal rating of the a.c. drive motor cannot be exceeded under any operating condition. However, the branch circ…

This Article applies to the installation of the electrical components and accessory equipment of electrolytic cells, electrolytic cell lines, and process power supply for the production of aluminum, cadmium, chlorine, copper, fluorine, hydrogen peroxide, magnesium, sodium, sodium…

All metal sections of continuous rigid cable supports and fittings shall be electrically continuous and effectively grounded to provide a continuous circuit for fault current. A continuous rigid cable support system shall not be used either as a grounded circuit conductor or as a…

(a) For purposes of this section, all references to “employees” means employees who provide direct patient care or who provide services that directly support care to patients in a general acute care hospital, as that term is defined in subdivision (a) of section 1250 of the Healt…

(a) Where Required and Located. (1) The car of every elevator suspended by wire ropes shall be provided with one or more approved car safety devices of a type identified in section 3035(e). The safeties shall be attached to the car frame, and one safety shall be located within or…

The minimum bending radii for portable cables during installation and handling in service shall be adequate to prevent damage to the cable.

Compliance personnel of the Division are responsible for conducting inspections and investigations under the California Occupational Safety and Health Act for the purpose of invoking civil enforcement remedies only. If hazardous or violative conditions are found, the civil enforc…

(a) Construction of Hoistways and Hoistway Enclosures. (1) Hoistways of hand elevators shall be enclosed as required for power-driven elevators in Section 3010(a). (2) The strength of the hoistway enclosure shall be as required in Section 3010(b). (3) The construction at the bott…

These High-Voltage Electrical Safety Orders are intended to establish essential requirements and minimum standards for the installation, operation, and maintenance of electrical installations and equipment to provide practical safety and such freedom from danger to personnel as t…

Transformer vaults shall be constructed so as to contain fire and combustible liquids within the vault and to prevent unauthorized access. (a) Strength. Vault structures shall have sufficient strength to withstand the loading to which they may be subjected and to support the equi…

The central function of the Bureau of Investigations, within the Division of Occupational Safety and Health, is to conduct criminal investigations. The Bureau must investigate accidents involving violations of a standard, order, or special order, or section 25910 of the Health an…

Conductors and busbars on a switchboard, panelboard, or control board shall be so located as to be free from physical damage and shall be held firmly in place.

(a) Where a counterweight runway is not in the same hoistway as the car, an enclosure meeting the requirements of Section 3085.1 shall be provided. (b) Access shall be provided for inspection, maintenance and repair of an enclosed counterweight and its ropes. Doors in the counter…

(a) All electrical equipment and systems shall be treated as energized until tested or otherwise proven to be deenergized. (b) Operating voltage of equipment or conductors shall be determined before working on or near energized parts. (c) The employer shall provide and require em…

(a) Fixed and Mobile Tower Cranes--Application for Permit--Location. (1) In the case of a fixed tower crane the application must be filed at he District Office nearest the location where the tower crane will be operated. (2) In the case of a mobile tower crane the application may…

All electrical installations and wiring shall conform to the California Code of Regulations. Title 24, Part 3, California Electrical Code. (Title 24, Part 7, Section 7-3087.3)

Wiring and equipment in portable substations shall conform to the sections applying to installations in permanent fixed substations; but, due to the limited space available, the working spaces shall be permitted to be reduced, provided that the equipment shall be so arranged that…

(a) Live steam or air hoses used to agitate liquids in tanks and vats shall be securely fastened to prevent hose ends from whipping out of the tank or vat. This does not apply to hoses used with pipe lances which are manually held in position for agitation. (b) Steam and air hose…

Fixtures installed in wet or damp locations shall be approved for the purpose and shall be so constructed or installed that water cannot enter or accumulate in wireways, lampholders, or other electrical parts. (a) A receptacle installed in a wet or damp location shall be suitable…