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California’s state requirements for electrical safety include a substantial amount of regulatory information beyond the federal requirements. We’ve included a brief listing of regulatory differences and additional requirements along with the state Title 8 menu.
To ensure that you are in full compliance with these requirements, click on the following link to view the actual state regulations regarding electrical safety.
Federal: 29 CFR 1910 Subpart S—Electrical; 301 to 399
California: Title 8, Division 1, Chapter 4, Subchapter 5: Electrical Safety Orders, Group 1-Low-voltage electrical safety orders (<600 volts)
Article 1. Definitions
2300 Scope
Article 2. Administration
2305.1 Purpose
2305.2 Application
2305.3 Variances
2305.4 Approvals - The CA Division of Industrial Safety may require proof that the products, materials,devices, systems, or installations will provide reasonable safety under the conditions of use, in addition to engineering calculations, stress analysis, and other data for each electrical design, model or make.
Article 3. Work procedures
2320.1 General
2320.2 Energized Equipment or Systems - Specific requirements apply to work to be performed on energized parts of equipment or systems, including supervision, training, PPE, and safeguards.
Additional requirements apply once the work has been completed, including posting accident prevention tags.
2320.3 Tests
2320.4 De-Energized Equipment or Systems
2320.5 Energizing (or Re-Energizing) Equipment or Systems
2320.6 Accident Prevention Tags
2320.7 Safety Precautions
2320.8 Fall Protection
2320.9 Backfeeding or Interconnection - Positive means are required to prevent the transmissions of electricity beyond the premises wiring system, or beyond any intentionally segregated parts of the system. Exceptions apply.
Article 4. Requirements for Electrical Installations
2340.1 Maintenance
2340.2 Examination, Installation, and Use of Equipment
2340.5 Conductors
2340.8 Insulation Integrity
2340.9 Interrupting Rating
2340.10 Circuit Impedance and Other Characteristics
2340.11 Deteriorating Agents
2340.12 Mechanical Execution of Work
2340.13 Mounting and Cooling of Equipment
2340.14 Electrical Connections
2340.16 Work Space About Electric Equipment - Special requirements apply to attics, furred ceilings and underfloor spaces.
2340.17 Guarding of Energized Parts
2340.18 Arcing Parts
2340.21 Marking
2340.22 Identification of Equipment - The regulations call for distinct markings on each service disconnecting means.
2340.24 Discontinued Circuits - Differences for abandoned or discontinued circuits.
2340.26 Mechanical Protection
2340.27 Location of Control and Protective Devices
Article 5. Use and Identification of Grounded Conductors
2350.2 General
2350.3 Connection to Grounded System
2350.6 Means of Identifying Grounded Conductors
2350.7 Use of White or Natural Gray Color
2350.9 Means of Identification of Terminals
2350.10 Identification of Terminals
2350.11 Polarity of Connections
Article 6. Branch Circuits
2360.1 Identification of Multiwire Branch Circuits
2360.2 Receptacles and Cord Connectors
2360.3 Ground-Fault Circuit Interrupter Protection for Personnel - General Industry - Additional requirements apply to all 120-volt (nominal), single-phase, 15- and 20-ampere receptacles installed in bathrooms or on rooftops, and for temporary wiring installations that are used during maintenance, remodeling, or repair.
2360.4 Outlet Devices
2360.5 Cord Connections
Article 8. Outdoor Wiring
2375.1 Scope
2375.7 Conductors on Poles
2375.18 Clearance from Ground - Differences for minimum clearances for installations built before May 5, 2008.
2375.19 Clearances from Buildings - Differences in clearances from the highest point of a rooftop.
2375.25 Location of Outdoor Lamps
Article 9. Services
2380.1 Disconnecting Means
Article 10. Overcurrent Protection
2390.1 General
2390.10 Grounded Conductors
2390.20 Disconnecting Means for Fuses
2390.24 Location
2390.41 Arcing or Suddenly Moving Parts
2390.42 Circuit Breakers
2390.81 Indicating
2390.83 Circuit Breakers Used as Switches
Article 11. Grounding
2395.1 Scope
2395.3 Direct-Current Systems - The neutral conductor of all 3-wire DC systems shall be grounded.
2395.5 Alternating-Current Circuits and Systems to Be Grounded
2395.6 Portable and Vehicle-Mounted Generators
2395.21 Objectionable Current over Grounding Conductor
2395.23 Grounding Connections for Alternating-Current Systems
2395.25 Conductor to Be Grounded-Alternating-Current Systems
2395.32 Supports, Enclosures, and Equipment to be Grounded
2395.42 Equipment Fastened in Place or Connected by Permanent Wiring Methods (Fixed)
2395.44 Nonelectrical Equipment
2395.45 Equipment Connected by Cord and Plug - Differences in the types of tools listed and to the conditions that apply to persons standing on various surfaces while using cord- and plug-connected appliances.
2395.51 Effective Grounding
2395.54 Common Grounding Electrode
2395.57 Equipment Fastened in Place or Connected by Permanent Wiring Methods (Fixed)-Grounding
2395.58 Electric Equipment Considered Effectively Grounded - Differences in required grounding equipment.
2395.59 Cord- and Plug-Connected Equipment
2395.61 Use of Grounded Circuit Conductor for Grounding Equipment
2395.70 General
2395.71 Bonding Service Equipment
2395.74 Connecting Receptacle Grounding Terminal to Box
2395.75 Bonding Other Enclosures
2395.78 Bonding in Hazardous Locations
2395.79 Equipment Bonding Jumpers
2395.81 Water Pipe Electrode
2395.82 Other Available Electrodes
2395.83 Made Electrodes
2395.84 Resistance of Made Electrodes
2395.86 Use of Lightning Rods
2395.113 Connection Devices for Grounding Conductors - Connection devices or fittings that depend on solder shall not be used.
2395.114 Continuity and Attachment of Branch-Circuit Equipment Grounding Conductors to Boxes - Substantial differences apply to how and where equipment grounding conductors can enter metallic and nonmetallic boxes.
Article 12. Wiring Methods, Components, and Equipment for General Use
2400.1 Scope
2400.2 General Requirements
Article 13. Temporary Wiring
2405.1 Scope - Differences in temporary electric power and lighting and other nonpermanent structures, equipment, and work locations.
2405.2 General Requirements for Temporary Wiring
2405.3 Temporary Poles - Different minimum sizes apply to temporary wood poles.
2405.4 Ground-Fault Circuit Protection-Construction Site - Minor differences apply to the definition of a construction site.
Article 15. Cable Trays
2418.2 Wiring Methods
2418.3 Industrial Establishments
2418.4 Equipment Grounding Conductors
2418.5 Hazardous (Classified) Locations
2418.6 Uses Not Permitted
Article 16. Open Wiring
2420.3 Exposed Wiring, Uses Permitted - Open exposed wiring shall not be installed in any building or portion of a building, with a few exceptions.
2420.4 Conductor Supports
2420.5 Flexible Nonmetallic Tubing
2420.6 Penetrations of Walls, Floors, Wood Cross Members, Etc.
2420.7 Protection from Physical Damage
Article 45. Cabinets, Boxes, and Fittings
2473.1 Conductors Entering Boxes, Cabinets, or Fittings
2473.2 Covers and Canopies
Article 47. Switches
2480.3 Enclosures - All manually operated switches shall be of an approved externally operable type enclosed in boxes or cabinets, except where other types are specifically permitted by these orders. Other regulations apply to switches.
2480.5 Single-Throw Knife Switches
2480.6 Double-Throw Knife Switches
2480.7 Connection of Switches — Specific regulations apply to switches for installations built on or after May 5, 2008.
Article 48. Switchboards and Panelboards
2484.3 Support and Arrangement of Busbars and Conductors
2484.5 Switchboards with Exposed Live Parts
2484.6 Panelboard Enclosures
2484.19 Relative Arrangement of Switches and Fuses
2484.24 Knife Switches Mounted in Switchboards of Panelboards
Article 48.1. Enclosures for Damp or Wet Locations
2485.1 Cabinets, Cutout Boxes, Fittings, Boxes, and Panelboard Enclosures
2485.2 Switches, Circuit Breakers, and Switchboards
Article 49. Flexible Cords and Cables
2500.7 Uses Permitted
2500.8 Uses Not Permitted
2500.9 Splices - Certain restrictions apply to flexible cords.
2500.10 Pull at Joints and Terminals
2500.11 In Show Windows and Show Cases
2500.13 Overcurrent Protection
2500.23 Conductor Identification - Conductors must follow strict color codes.
2500.25 Maintenance of Outer Sheath
Article 50. Fixture Wires
2505.2 General
2505.10 Uses Permitted
2505.11 Uses Not Permitted
2505.12 Overcurrent Protection
Article 51. Lighting Fixtures, Lampholders, Lamps and Receptacles
2510.1 Maximum Voltage - Substantial differences apply to voltage to ground regulations.
2510.3 Location of Lamps
2510.4 Live Parts - No fixtures may have live parts normally exposed to contact.
2510.5 Wet and Damp Locations
2510.6 Portable Handlamps
2510.7 Receptacles
2510.8 Lampholders
2510.56 Receptacles, Cord Connectors and Attachment Plugs (Caps)
2510.58 Non-Grounding-Type Receptacles, Adapters, Cord Connectors, and Attachment Plugs
Article 52. Appliances
Substantial differences apply to portable immersion type electric heaters and their size, weight, and locations.
2522.2 Energized Parts
2522.7 General
2522.9 Portable Immersion Heaters
2522.10 Protection of Combustible Material
2522.11 Stands for Portable Appliances
2522.12 Signals for Heated Appliances
2522.15 Infrared Lamp Industrial Heating Appliances - Differences in requirements for infrared heating lamps and lampholders.
2522.17 Wall-Mounted Ovens and Counter-Mounted Cooking Units - Differences in requirements for wall-mounted ovens.
2522.20 Disconnecting Means
2522.21 Disconnection of Fixed Appliances
2522.22 Disconnection of Portable Appliances
2522.23 Disconnection of Stationary Appliances
2522.26 Disconnecting Means for Motor-Driven Appliances
2522.30 Nameplate
2522.31 Marking of Heating Elements - Requirements apply to all heating elements that are rated over one ampere.
2522.32 Appliances Consisting of Motors and Other Loads - Special marking requirements apply.
Article 53. Fixed Electric Space Heating Equipment
2524.1 Scope
2524.19 Disconnecting Means - Means shall be provided to disconnect the heater, controller(s), and overcurrent protective device(s) of all fixed electric space heating equipment from all ungrounded conductors.
2524.21 Switch and Circuit Breaker to Be Indicating - Switches and circuit breakers used as disconnecting means shall be of the indicating type.
2524.65 Location of Disconnecting Means - Duct heater controller equipment shall be accessible with the disconnecting means installed at or within sight from the controller.
Article 54. Fixed Outdoor Electric De-Icing and Snow Melting Equipment
2526.1 Scope
2526.20 Disconnecting Means
2526.50 Disconnecting Means - All fixed outdoor electric de-icing and snow melting equipment shall be provided with a means for disconnection from all ungrounded conductors.
Article 55. Fixed Electric Heating Equipment for Pipelines and Vessels
2527.1 Scope
2527.2 Definitions
2527.10 General
2527.11 Use
2527.12 Marking
2527.13 Identification - The presence of electric pipeline and vessel heating equipment shall be evident by the posting of appropriate signs or other markings at frequent intervals in the area involved.
2527.20 Disconnecting Means
2527.22 Overcurrent Protection
2527.55 Disconnecting Means - Different requirements apply to disconnecting means, especially covering factory-installed attachments.
Article 56. Motors, Motor Circuits and Controllers
2530.4 In Sight From
2530.36 Fuses
2530.43 Automatic Restarting - Restrictions apply to motors.
2530.74 Disconnection - Differences in requirements for disconnecting means for power supplies for motors and controllers.
2530.81 General
2530.82 Controller Design - Differences for starting and stopping motors, autotransformers, and rheostats.
2530.83 Rating - Different restrictions apply to horsepower ratings for controllers, motors, circuits, switches, and circuit breakers.
2530.84 Need Not Open All Conductors
2530.86 Motor Not in Sight from Controller
2530.102 In Sight from Controller Location
2530.103 To Disconnect Both Motor and Controller
2530.104 To Be Indicating
2530.105 Grounded Conductors
2530.106 Service Switch as Disconnecting Means
2530.107 Readily Accessible
2530.112 Motors Served by Single Disconnecting Means
2530.113 Energy from More Than One Source
2530.120 Motors, Motor-Control Apparatus, and Motor Branch-circuit Conductors
2530.121 Live Parts of Motors or Controllers
Article 57. Transformers and Transformer Vaults (Including Secondary Ties)
2533.1 Scope
2533.2 Location
Article 58. Capacitors
2534.2 Enclosing and Guarding - Differences in requirements for enclosing and guarding capacitors, along with exceptions.
2534.6 Drainage of Stored Charge - Differences in the time and means of discharge for capacitors.
2534.8 Disconnecting Means - Differences in requirements for disconnecting means for ungrounded conductors and capacitors.
Article 58.1 Storage Batteries
2535.1 Storage Batteries
Article 59. Hazardous (Classified) Locations
Special precautions apply to vehicle service and repair operations, aircraft hangars, gasoline dispensing and service stations, bulk storage plants, finishing area (locations where paints, lacquers, or other flammable finishes are applied), wastewater wells, and oil and gas wells. California has adopted a variety of specific electrical requirements for the following:
2540.1 Scope
2540.2 General - Different information applys to intrinsically safe equipment.
2540.3. Electrical Installations
2540.4 Protection Techniques
2540.5 Commercial Garages, Repair and Storage
2540.6 Aircraft Hangars
2540.7 Gasoline Dispensing and Service Stations
2540.8 Bulk-Storage Plants
2540.9 Finishing Processes
2540.10 Wastewater Wells
2540.11 Class I, Zone 0, 1, and 2 Locations
Article 60. Oil and Gas Wells
2548.21 General
2548.22 Drilling Wells
2548.23 Producing Wells
2548.24 Overload Protection
2548.25 Wiring Methods
2548.26 Lighting
Article 69. Places of Assembly
2551.1 Scope
2551.2 Other Articles
2551.3 Wiring Methods
Article 70. Theaters and Similar Locations
2552.1 Scope
2552.2 Motion Picture Projectors
2552.3 Sound Reproduction
2552.21 Dead Front
2552.22 Guarding Back of Switchboard
2552.47 Lamps in Scene Docks
2552.51 Supply
2552.52 Overcurrent Protection
2552.53 Construction
2552.61 Arc Lamps
2552.62 Portable Plugging Boxes
2552.63 Bracket Fixture Wiring
2552.64 Portable Strips
2552.65 Festoons
2552.66 Special Effects
2552.67 Cable Connectors
2552.68 Conductors for Portables
2552.71 Pendant Lampholders
2552.72 Lamp Guards
Article 71. Motion-picture Studios and Similar Locations
2553.1 Scope
2553.12 Portable Wiring
2553.14 Stage Lighting and Effects Control
2553.14 Plugging Boxes
2553.15 Enclosing and Guarding Live Parts
2553.16 Portable Lamps
2553.17 Portable Arc Lamps
2553.18 Overcurrent Protection-Short-Time Rating
2553.19 Sizing of Feeder Conductors for Television Studio Sets
2553.20 Grounding
2553.41 Lamps at Tables
2553.51 Lamps in Cellulose Nitrate Film Storage Vaults
2553.52 Motors and Other Equipment in Cellulose Nitrate Film Storage Vaults
2553.64 Working Space and Guarding
2553.65 Portable Substations
2553.66 Grounding at Substations
Article 72. Motion Picture Projectors
2554.1 Scope
2554.2 Professional Projector-Definition
2554.10 Location of Equipment
2554.11 Equipment Prohibited
2554.12 Motor-Driven Projectors
2554.13 Conductors Size
2554.14 Conductors on Lamps and Hot Equipment
2554.15 Flexible Cords
2554.16 Lamp Guards
2554.17 Location of Equipment
2554.19 Equipment Prohibited
2554.20 Approval
2554.21 Marking
2554.30 Nonprofessional Projector-Definition
2554.31 Booth Not Required
2554.32 Approval
2554.33 Source of Illumination
2554.34 Marking
2554.35 Nonprofessional Film Marking
2554.50 Sound Recording and Reproduction
Article 73. Electric Signs and Outline Lighting
2560.2 Disconnecting Means - Differences for cord-connected signs and outline lighting installations.
2560.3 Location
2560.10 Clearances - Substantial differences apply to vertical clearances above and under signs and outline systems.
Article 74. Cranes and Hoists
California applies special requirements to crane and hoist operations, particularly as they affect:
2561.1 Scope
2561.2 Special Requirements for Particular Locations
2561.3 Clearance
2561.7 Lifting Magnets
2561.8 Remote Control Circuits
2561.11 Wiring Method
2561.32 Disconnecting Means for Cranes and Hoists
2561.51 Separate Controls
2561.55 Limit Switch
Article 74.1. Elevators, Dumbwaiters, Escalators, Moving Walks, Wheelchair Lifts, and Stairway Chair Lifts
2562.1 Scope
2562.2 Disconnecting Means
2562.3 Identification and Signs
2562.4 Single-Car and Multicar Installations
2562.5 Warning Sign for Multiple Disconnecting Means
2562.6 Interconnection Between Multicar Controllers
2562.7 Motor Controllers
Article 75. Electric Welders
2563.22 Overcurrent Protection - Special restrictions apply to overcurrent devices.
2563.23 Disconnecting Means-Arc Welders
2563.33 Disconnecting Means-Resistance Welders
Article 76. Sound Recording and Similar Equipment
2564.1 Scope
2564.6 Grouping of Conductors
Article 77. Information Technology Equipment
2565.2 Supply Circuits and Interconnecting Cables - California has adopted restrictions applying data-processing systems, including requirements for branch circuit conductors, connecting cables and raised floors.
2565.3 Disconnecting Means
Article 77.1. X-Ray Equipment
2566.1 Scope
2566.2 Disconnecting Means
2566.3 Control
Article 77.2. Induction and Dielectric Heating Equipment
2567.1 Scope
2567.2 Guarding and Grounding
2567.3 Remote Control
Article 78. Electrically Driven or Controlled Irrigation Machines
Differences for irrigation cables and fittings and special grounding requirements for irrigation machines.
2568.2 Definitions
2568.4 Irrigation Cable
2568.8 Disconnecting Means
2568.12 Grounding
2568.15 Lightning Protection
2568.16 Energy from More Than One Source
Article 79. Swimming Pools, Fountains and Similar Installations
2569.1 Scope
2569.5 Receptacles
2569.6 Lighting Fixtures, Lighting Outlets, and Ceiling Suspended (Paddle) Fans
2569.7 Cord-and Plug-Connected Equipment
2569.20 Underwater Equipment
2569.30 Pumps - California has adopted requirements for filter pumps and means of grounding for storable swimming pools.
2569.31 Ground-Fault Circuit Interrupters Required
2569.51 Fountains
Article 80. Emergency Systems
2571.1 Scope
2571.4 Tests and Maintenance - Differences in testing schedules and maintenance requirements for emergency systems.
2571.9 Wiring Methods
2571.14 Emergency Illumination
2571.16 Emergency Illumination
2571.19 Switch Location
2571.21 Switch Location - Substantial differences apply to requirements for manual switches located in places of assembly.
2571.25 Accessibility - The branch circuit overcurrent devices in emergency circuits shall be accessible to authorized persons only.
2571.30 Signs
Article 81. Stand-By Power Generation Systems
2575.1 Scope
2575.10 Legally Required Stand-By Power Generation Systems
Article 82. Electrolytic Systems
Differences in wiring systems, especially for insulated open conductors.
2580.1 Scope
2580.2 Wiring Methods
2580.6 Wiring Methods
2599 General
Article 83. Electrolytic Cells
2583.1 Scope
2583.2 Application
2583.3 Disconnecting Means
2583.4 Portable electric Equipment
2583.5 Power Supply Circuits and Receptacles for Portable Electric Equipment
2583.6 Fixed and Portable electric Equipment
2583.7 Auxiliary nonelectrical Connections
2583.8 Cranes and Hoists
Article 84. Carnivals, Circuses, Fairs, and Similar Events
2584.1 Scope
2584.2 Protection of Electric Equipment
2584.3 Services
2584.4 Overhead Conductor Clearances
2584.5 Wiring Methods
2584.6 Inside Tents and Concessions
2584.7 Portable Distribution and Termination Boxes
2584.8 Disconnecting Means
Article 85. Class 1, Class 2, and Class 3 Remote Control, Signaling, And Power-Limited Circuits
2585.1 Classification
2585.2 Marking
2585.3 Separation from Conductors of Other Circuits
Article 86. Fire Alarm Systems
2586.1 Classifications
2586.2 Power Sources
2586.3 Separation from Conductors of Other Circuits
2586.4 Identification
Article 87. Communications Systems
2587.1 Scope
2587.2 Protective Devices
2587.3 Conductor Location
2587.4 Equipment Location
2587.5 Grounding
Article 88. Solar Photovoltaic Systems
2588.1 Scope
2588.2 Conductors of Different systems
2588.3 Disconnecting Means
Article 89. Integrated Electrical Systems
2589.1 Scope
2589.2 Location of Overcurrent Devices in or on Premises
The following regulations apply to high-voltage electrical safety orders. To be sure you are in full compliance, be sure to read the actual state regulations.
California: Title 8, Division 1, Chapter 4, Subchapter 5: Electrical Safety Orders, Group 2-High-voltage electrical safety orders (>600 volts):
Article 1. Definitions
2700 Definitions
Article 2. Administration
2703 Special Requirements
2704 Titles and Subtitles
2705 Scope
2706 Application
2707 Approvals - Additional requirements apply to testing of equipment and recognition by a nationally recognized testing laboratory.
2709 Variances from These Orders
Article 3. General
2710 Examination, Installation, and Use of Equipment
2710.1 Mounting and Cooling of Equipment
2711 Readily and Safely Accessible
2712 Atmospheric and Environmental Protection
2713 Protection Against Physical Damage
2714 Installation and Maintenance
2715 Electrical Connections
2716 Ampacities
2716.1 Arcing Parts
2717 Energized Parts
2718 Marking - All switches, circuit breakers, and other control devices shall be located or marked to indicate clearly the equipment controlled by them.
2718.1 Disconnecting Means and Circuits
Article 4. Service and Service Entrance Equipment
2719 Application
2720 General - Conditions apply to the capacity requirements, continuity of service, character of the load, and location of the load.
2721 Service Raceways - Regulations applying to service raceways differ substantially from federal requirements.
2722 Service Through Buildings
2723 Service Entrance Conductors and Clearances
2724 Conductors in Service Entrance Raceway - California requires service disconnecting means to simultaneously disconnect all ungrounded conductors supplied through service entrance conductors. Exceptions are listed.
2725 Location of Switching Devices and Other Service Entrance Equipment
2726 Enclosure
2728 Overcurrent Protection Requirements - Differences in requirements for conductors from the federal regulations.
2729 Switching Requirements - Switches must be group operated and capable of being padlocked in the open position.
2730 Switches in Parallel (Multiple)
2731 Isolation Requirements - Requirements apply to isolate the load.
2732 Paralleling and Isolating Switches
Article 5. Feeders and Branch Circuits
2734 Ampacity
2735 Overcurrent Protection
2736 Switching Requirement - Additional requirements apply to feeders and switches.
2737 Isolation Requirements - California requires feeders to be isolated from all sources of supply.
2738 Identification of Multiwire Branch Circuits
Article 6. Grounding
Differences from the federal for grounding connections and grounding electrodes, including specific requirements for grounding equipment.
2739 Grounding of Systems and Circuits-General
2739.0 Scope
2739.1 Grounding of Systems and Circuits-General
2739.4 Grounding Connections
2740 Solidly Grounded Neutral Systems
2741 Impedance Grounded Neutral Systems
2742-0 Grounding Path
2742-1 Grounding of Supports, Enclosures and Equipment
2742-2 Nonelectrical Equipment2742-3 Methods of Grounding Fixed Equipment
2743 Grounding of Systems Supplying Portable High-Voltage Equipment
Article 7. General Requirements--Wiring Methods
Differences in requirements for junction boxes, raceways, and conductors.
2745 Covers Required
2745.0 Scope
2745.1 General Requirements
2745.2 Covers Required
2746 Conductors of Different Systems
2747 Inserting Conductors in Raceways
2748 Conductor Bending Radius
2749.1 Aboveground Wiring Methods
2749.2 Braid-Covered Insulated Conductors - Open Installations
2750 Grounding
2751 Overcurrent Devices in Grounded Conductors
Article 8. Pull and Junction Boxes
Substantial differences apply to requirements for pull boxes and construction and installation regulations, including labeling requirements for junction boxes.
2752 Size of Pull Boxes and Raceway Entrance Locations
2753 Construction and Installation Requirements
2754.1 Conductors Entering Boxes, Cabinets, or Fittings
2754.2 Corers and Canopies
Article 9. Open Wiring (Bare)
Table 2756 lists the minimum spacing for bare energized parts and adjacent surfaces.
2755 Scope
2756 Spacing Between Bare Energized Parts and Adjacent Surfaces
2757 Insulators
2758 Clearances
Article 10. Conduit
California had adopted substantial differences in its requirements for conduit, including listing specific sizes and materials for conduit fittings.
2760 General
2761 Rigid Metal Conduit
2762 Rigid Nonmetallic Conduit
Article 11. Metal-Enclosed Bus
2764 Grounding
2765 Adjacent and Supporting Structures
2766 Neutral
2767 Barriers and Seals - Bus runs having sections located both inside and outside of building shall provide a vapor seal at the building wall to prevent interchange of air between indoor and outdoor sections unless forced cooled. Fire barriers shall be provided at walls where fire separation is required.
2768 Perforated Enclosures
2769 Terminations and Connections - Specific requirements apply to flexible or expansion connections and bus enclosure terminations.
2770 Switches - Disconnecting links must be plainly marked to be removable only when the bus is de-energized. Additional requirements apply to switches.
2771 Identification - Differences in how bus runs shall be labeled.
2772 Drain Facilities
2773 Low-Voltage Wiring
Article 12. Continuous Rigid Cable Supports
California has adopted substantial requirements for continuous rigid cable supports, including requiring installation as a complete support system, grounding requirements for metal sections of continuous grid, and construction using continuous rigid cable supports.
2775 Definitions
2776 Use
2777 Installation
2778 Grounding
2779 Construction
Article 13. Metal-Clad Cable
Certain differences apply for metal-clad cables used in both wet and dry locations.
2781 Use
2782 Grounding. Grounding Conductor
2783 Supports
2784 Bends
2785 Fittings
2786 Elevation
2787 Strength
2787.1 Splices and Terminations of Metal-Clad Cable
Article 14. Portable (Flexible) Cable
2789 Scope
2790 Conductor Construction2791 Shielding
2792 Equipment Grounding Conductors
2793 Minimum Bending Radii
2794 Fittings
2795 Splices and Terminations
Article 15. Temporary Wiring
2796 Scope
2797 Use
2798 Guarding - Suitable fencing, barriers, or other means shall be provided to prevent access of other than authorized and qualified personnel to temporary wiring.
2799 Time Limit (Renumbered)
2799.0 Time Limit - Temporary wiring is limited to 90 days, with a few exceptions.
2799.1 Feeders
2799.2 Branch Circuits
2799.3
2799.4
2799.5
2799.6
Article 16. Vertical Suspension of Cables
California has adopted regulations that differ from the federal for cable suspensions, including specific weight limitations.
2801 Cable Suspended by Its Conductor(s)
2802 Cable Suspended by Wire or Messenger
2803 Wire Mesh Holding Devices
Article 17. Enclosures For Electrical Installations
Substantial differences apply to enclosures, including construction requirements for transformer vaults, vaults containing oil-filled equipment, electrical equipment containing flammable gas, and electrical equipments installed on roofs.
2805 Vaults-General
2806 Vaults Containing Oil-Filled Equipment
2807 Separate Buildings
2808 Roof Installations
2809 Metal Enclosures
2810 Locked Rooms, Vaults, or Enclosures
2811 Warning Signs - Permanent and conspicuous warning signs shall be posted on all doors or gates that provide access to enclosures containing exposed energized parts and conductors. Such signs shall be legible at 12 feet and shall read substantially as follows:
"WARNING--HIGH VOLTAGE--KEEP OUT."
2812 Fenced or Walled Enclosures (Renumbered)
2812.1 Fenced or Walled Enclosures
2812.2 Indoor Installations Accessible to Other Than Qualified Persons
2812.3 Outdoor Electrical Installations
2813 Underground Vaults
Article 18. Conductors
2815 General
2816 Insulation - Differences from the federal in installing conductors in wet locations or under corrosive conditions.
2817 Conductors in Multiple
2818 Neutral Conductors
2819 Conductor Terminations - Specific requirements apply to conductor terminations.
2820 Grounding of Shielding
2821 Ampacities
Article 19. Outdoor Wiring
2823 General
2824 Overhead Lines
2825 Outdoor Lighting
2826 Raceways Above Ground
2827 Raceways (or Ducts) Below Ground
2828 Risers
2829 Terminal Enclosures
2830 Insulated Conductors
2831 Circuit Feedback
Article 20. Interrupting And Isolating Devices
Many differences from the federal for interrupter switches ratings, installation requirements, switching of conductors, identification, and stored energy.
2832
2833 Interrupter Switches
2833.1 Knife Switches
2833.2 Load Interrupter Switches
2834 Fused Interrupter Switches
2835 Disconnecting (Isolating) Switches
2837 Ratings
2838 Grounding
2839 General
2840 Identification
2841 Isolation
2843 General
2845 Power Fuses - Substantial differences from the federal apply to voltage ratings, installation, mountings, disconnecting means, identification, and enclosed fuse types.
2847 Distribution Cutouts and Fuse Links-Expulsion Type - Substantial differences from the federal apply to voltage ratings, identification, cutout body, door, or fuse tubes, fuse links, outdoor mountings, and workspaces.
2849 Continuous Current Rating
2850 Interrupting Rating
2851 Voltage Rating
2852 Fault Closing Rating
2853 Location
2854 Identification
2855 Enclosure
Article 26. Metal-Enclosed Power Switchgear and Industrial Control Assemblies
2857 Scope
2858 Metal-Enclosed Power Switchgear
2859 Arrangement of Devices in Assemblies
2860 Guarding of High-Voltage Energized Parts Within a Compartment
2861 Guarding of Low-Voltage Energized Parts Within a Compartment
2862 Clearance for Cable Conductors Entering Enclosure
2863 Accessibility of Energized Parts - Differences from the federal apply to doors or removable panels and installation requirements.
2864 Grounding
2865 Grounding of Devices
2866 Door Stops and Cover Plates
2867 Gas Discharge from Interrupting Devices
2868 Inspection Windows
2869 Location of Devices
2870 Interlocks-Interrupter Switches
2871 Interlocks-Circuit Breakers
Article 27. Transformers
California has adopted regulations applying to transformers that are substantially different than the federal. Specific requirements apply to transformer ventilation, protection from physical damage, identification and labeling, voltage ratings, and locations.
2873 Scope
2874 General
2875 Requirements Applicable to Specific Types and Locations of Transformers
2876 Switching
2877 Overcurrent Protection
2878 Grounding
Article 28. Rotating Machinery and Its Control Apparatus
2880 Scope
2881 Conductors
2882 Control of Motors and Generators (Renumbered)
2822.1 Motors - Each motor shall be provided with a means for starting and stopping.
2822.2 Generators - Generators must meet specific requirements.
2883 Motor Circuit Protection
2884 Generator Circuit Protection
2885 Identification
Article 29. Capacitors
2887 General
2888 Enclosing and Guarding
2889 Grounding
2890 Switching
2891 Overcurrent Protection
2892 Identification
2893 Means for Discharge - California regulations require a means be provided to reduce the residual voltage of a capacitor to 50 volts or less within 5 minutes after the capacitor is disconnected from the source of supply. Other requirements apply to discharge circuits and capacitors.
2894 Special Handling Precautions
Article 30. Resistors and Reactors
2896 General
2897 Grounding
2898 Oil-Filled Reactors
Article 31. Lightning Arresters
Differences in requirements for lightning arresters in flammable atmospheres, clearances, connections, and identification and labeling.
2900 Flammable Atmospheres
2901 Clearances
2902 Connections
2903 Grounding
2904 Identification
Article 32. Mobile and Portable Equipment
California requires specific, highly visible markings for mobile and portable equipment.
2906 General
2907 Overcurrent Protection
2908 Enclosures 2909 Collector Rings
2910 Power Cable Connections to Mobile Machines 2911 High-Voltage Portable Cable for Main Power Supply
2912 Grounding
Article 33. Mine and Tunnel Installations
2914 General
2915 Overcurrent Protection
2916 Conductors
2917 Bonding and Equipment Grounding Conductor
2918 Transformers, Switches, and Electrical Equipment
2919 Energized Parts
2920 Ventilation System Controls
2921 Disconnecting Means
2922 Enclosures
2923 Grounding
Article 34. Hazardous (Classified) Locations
2925 General
Article 35. Workspace and Guarding
Differences from the federal apply to minimum clear distances for conditions, warning signs, and elevation of unguarded live parts.
2930 Enclosure and Guarding
2931 Entrance and Access to Workspace
2932 Workspace
2933 Illumination
2934 Elevation of Unguarded Live Parts
2935 Installation of Electrical Equipment in an Outdoor Enclosure
2936 Passageway and Open Spaces
Article 36. Work Procedures and Operating Procedures
California lays out clear expectations for safe access to work locations, employer responsibilities, safety training, electrical worker qualifications, and observers. Substantial differences from the federal apply to tools and protective equipment, especially for insulating equipment, and equipment testing.
2940 General Provisions
2940.1 Voltage Determination
2940.2 Clearances. The requirements for minimum approach distances and for line clearance operations apply to employees performing tree trimming activities as well. Under 3423. Electrical Hazards, General, Cal/OSHA is clear that employees must not perform tree trimming activities within 10 feet of high voltage energized power lines and conductors unless the employee meets the requirements of subsection (c). A qualified tree worker must be permitted to perform tree trimming activities within 10 feet, but no closer than 1 foot, of energized low voltage (600 volts or less) power lines and conductors, provided that the qualified tree worker is trained and competent in the requirements outlined by Cal/OSHA in subsection (b)(2).
2940.3 Inclement Weather
2940.4 Illumination
2940.5 Work over or near Water
2940.6 Tools and Protective Equipment
2940.7 Mechanical Equipment - Substantial differences between the state and federal regulations apply to loading and unloading poles, pole hauling operations, equipment storage, tag lines, cleaning insulators, pole steps, working on conductors or equipment energized at 600 volts or more, making or breaking parallel circuits, working with rubber gloves, employee supervisions, stringing or removing conductors, setting up rope nets or guard structures, rigging, grips, transmission clipping crews, reel handling equipments, and installing conductors adjacent to energized high voltage lines. Additional requirements apply to metal tower construction, washing operations, and installing tubular steel power line poles.
California has further requirements for facilities that are owned, operated, and maintained by electric utilities.
2940.8 Material Handling
2940.9 Protection from Backfeed Voltages
2941 Work on or in Proximity to Overhead High Voltage Lines
2941.1 Metal Tower Construction
2941.2 Washing Insulators Supporting Energized Conductors or Equipment
2942 Tubular Steel Poles
2943 Work on or in Proximity to Underground High-Voltage Cables, Conductors or Equipment
2944 Work on or in Proximity to Conductors and Equipment Located in High-Voltage Stations, or Switchyards
2945 Access and Workspace Requirements
Appendix A
Appendix B
Appendix C
Article 37. Provisions for Preventing Accidents Due to Proximity to Overhead Lines
California has strict provisions applying to working around overhead lines. These regulations set requirements for clearances and safeguards, overlapping regulations with the Federal Aviation Administration, boom-type lifting or hoisting equipment, equipment storage, and warning signs.
2946 Provisions for Preventing Accidents Due to Proximity to Overhead Lines
2947 Warning Signs Required
2948 Notification to the Operators of High-Voltage Lines and Responsibility for Safeguards
2949 Special Exemption
Article 38. Line Clearance Tree Trimming Operations
2950 Application — The requirements for line clearance tree trimming operations also apply to tree and ornamental palm maintenance and removal as referenced in Article 12, 3423. Electrical Hazards, General. Only qualified line clearance tree trimmers, or trainees, as defined in Section 2700 of the High-Voltage Electrical Safety Orders shall be permitted to perform such line clearance tree trimming work.
2951 Line Clearance Operations
Article 39. Signs and Outline Lighting--Exceeding 600 Volts
2970 Installation of Conductors
2971 Transformers
2972 Electric-Discharge Tubing
2973 Terminals and Electrode Receptacles for Electric-Discharge Tubing
2974 Switches on Doors
Article 40. Electronic News Gathering
2980 Definitions
2981 Provisions for Preventing Accidents Due to Operation of Electronic News Gathering Vehicles in Proximity of Overhead Power Lines.
2982 Employee Training
2983 Safety Inspections
Article 41. Communications Systems
2985.0 Scope
2985.1 Equipment Location
2985.2 Grounding
Article 42. Induction and Dielectric Heating Equipment
2987.0 Scope
2987.1 Guarding and Grounding
Specific requirements apply to warning labels or signs.
Article 43. Integrated Electrical Systems
2989.0 Scope
2989.1 Location of Overcurrent Devices in or on Premises