CCLME.ORG - DIVISION 1. DEPARTMENT OF INDUSTRIAL RELATIONS CHAPTERS 1 through 6

(continued)
(f) Physical Protection. Flexible cords and cables shall be protected from accidental damage. Sharp corners and projections shall be avoided. When passing through doorways or other pinch points, protection shall be provided to avoid damage.
(g) Grounding. Temporary wiring installations specified in Section 2405.1(b) shall be grounded to grounding electrode or to the grounding electrode of a permanent wiring system.

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

s 2405.3. Temporary Poles.
The minimum size of a temporary wood pole shall be 6 inches by 6 inches (nominal) if square, or have a top diameter of at least 5 inches if round, and be of sufficient length to maintain all required overhead clearances specified in Section 2375.18, but not less than 20 feet long. The lower end shall be embedded not less than 4 feet in the ground. A pole of a material other than wood, if of equivalent strength, may be used.
Exception: For distribution poles in areas accessible to pedestrians only, a 4-inch x 4-inch (nominal) wood pole, or equivalent (embedded 4 feet in the ground), shall be permitted, provided that a minimum overhead conductor clearance of 10 feet is maintained.

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

s 2405.4. Ground-Fault Circuit Protection-Construction Site.
(a) General. For purposes of this Section, a construction site is a place of employment where erection, demolition, modification, alteration or excavation is being performed on a building, structure or underground facility, other than mining.
(b) Construction Sites. To protect employees on construction sites, the employer shall use either or both ground-fault circuit interrupters as specified in Subsection (c) of this Section or an assured equipment grounding conductor program as specified in Subsection (d) of this Section. These requirements are in addition to any other requirements for equipment grounding conductors.
Exception: An individual cord set, supplied from a receptacle on a 15- or 20-ampere branch circuit which is part of the permanent wiring of that building or structure, shall not be required to comply with Section 2405.4(c) or (d).
(c) Ground-Fault Circuit Interrupters. All 120-volt, AC, single-phase, 15- and 20-ampere receptacle outlets on construction sites, which are not a part of the permanent wiring of the building or structure and which are in use by employees, shall have approved ground-fault circuit interrupters for personnel protection. Receptacles on a two-wire, single phase portable or vehicle-mounted generator rated not more than 5 KW, where the circuit conductors of the generator are insulated from the generator frame and all their grounded surfaces, need not be protected with ground-fault circuit interrupters.
Feeders supplying 15- and 20-ampere receptacle branch circuits shall be permitted to be protected by a ground-fault circuit interrupter approved for the purpose in lieu of the above provisions .
(d) Assured Equipment Grounding Conductor Program. The employer shall establish and implement an assured equipment grounding conductor program on construction sites covering all 120-volt, AC, single-phase, cord sets, receptacles which are not a part of the permanent wiring of the building or structure and equipment connected by cord and plug, which are used by employees. This program shall comply with the following minimum requirements:
(1) A written description of the program, including the specific procedures adopted by the employer shall be available at the job site for inspection and copying by the Division of Occupational Safety and Health and any affected employee.
(2) The employer shall designate one or more qualified persons as defined in Section 2300 to implement the program.
(3) Each cord set, attachment cap, plug and receptacle of cord sets, and any equipment connected by cord and plug including these which are not required to be grounded, except cord sets and receptacles which are fixed and not exposed to damage, shall be visually inspected before each day's use for external defects, such as, deformed or missing pins or insulation damage, and for indication of possible internal damage. Equipment found damaged or defective shall not be used until repaired.
(4) The following tests shall be performed on all cord sets and receptacles which are not a part of the permanent wiring of the building or structure, and cord- and plug-connected equipment required to be grounded:
Note: Double-insulated tools or other similar equipment are not required to be grounded. See Section 2395.45(d)(5).
(A) All equipment grounding conductors shall be tested for continuity and shall be electrically continuous.
(B) Each receptacle and attachment cap or plug shall be tested for correct attachment of the equipment grounding conductor. The equipment grounding conductor shall be connected to its proper terminal.
(5) All tests required in Subsection (d)(4) shall be performed:
(A) Before first use for newly acquired equipment;

(B) Before equipment is returned to service following any repairs;
(C) Before equipment is used after any incident which can be reasonably suspected to have caused damage (for example, when a cord set is run over); and
(D) At intervals not to exceed three (3) months, except that cord sets and receptacles which are fixed and not exposed to damage shall be tested at intervals not exceeding 6 months.
(6) The employer shall not make available or permit the use by employees of any equipment which has not met the requirements of Subsection (d) of this Section.
(7) Receptacles, cord sets and cord- and plug-connected equipment passing the tests required in Subsection (d) shall be identified. Identification may be made by means of logs, color coding or other effective means, shall be maintained until replaced by a more current identification, and shall indicate the last test date or the interval for which the tests were performed. These dates or intervals shall be readily available to the Division of Occupational Safety and Health and affected employees.

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

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

s 2418.2. Uses Permitted.

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

s 2420.3. Exposed Wiring.
(a) Scope. Open exposed wiring shall not be installed in any building or portion of a building except:
(1) In substations, transformer vaults, transformer enclosures, on the supply side of electric furnace electrodes, or in tunnels or similar locations, where such spaces are restricted to electrical use and are accessible to qualified and authorized persons only.

(Title 24, Part 3, Section 3-320.3 exception.)
(2) For insulated conductors as permitted in Article 13; Temporary Wiring.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2420.17. Exposed Wiring.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

Note: Authority and reference cited: Section 142.3, Labor Code.

s 2473.7. Space in Enclosures.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2473.8. Enclosures for Switches or Overcurrent Devices.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

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

s 2480.1. Enclosures.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2480.3. Enclosures.
Switches shall comply with the following: 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. Switches are not required to be of the externally operable type when operating at 50 volts or less; as for example, in some electric furnace and electrolytic installations. In such cases the switches shall be protected by suitable guards or enclosures if they are exposed to danger of short circuiting or accidental contact.
(Title 24, Part 3, Section 380-3.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2480.6. Position of Knife Switches.
Single-throw knife switches shall be so placed that gravity will not tend to close them. Double-throw knife switches shall be permitted to be mounted so that the throw will be either vertical or horizontal. Where the throw is vertical, a locking device shall be provided that will insure the blades remaining in the open position when so set.
(Title 24, Part 3, Section 380-6.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2480.7. Connection of Knife Switches.
Single-throw knife switches shall be so connected that the blades are dead when the switch is in the open position.
(Title 24, Part 3, Section 380-7.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2480.8. Accessibility and Grouping.
Suitable disconnecting switches or plug connectors shall be installed to permit the disconnection of all ungrounded conductors of each temporary circuit.
(Title 24, Part 3, Section 380-8.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2480.18. Capacity.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2480.19. Signs.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2484.3. Support and Arrangement of Busbars and Conductors.
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.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2484.19. Relative Arrangement of Switches and Fuses.
In panelboards, fuses of any type shall be installed on the load side of any switches.
(Title 24, Part 3, Section 384-19.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2484.24. Knife Switches.
Exposed blades of knife switches shall be dead when open.
(Title 24, Part 3, Section 384-24.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2500.7. Uses Permitted.
(a) Flexible cords and cables shall be used only for (1) pendants; (2) wiring of fixtures; (3) connection of portable lamps or appliances; (4) elevator cables; (5) wiring of cranes and hoists; (6) connection of stationary equipment to facilitate their frequent interchange; or (7) prevention of the transmission of noise or vibration; or (8) fixed or stationary appliances where the fastening means and mechanical connections are designed to permit removal for maintenance and repair; or (9) data processing cables as permitted by Section 2565.2.
(b) Where used as permitted in subsections (a)(3), (a)(6), and (a)(8) above, each flexible cord shall be equipped with an attachment plug and shall be energized from an approved receptacle outlet.
(Title 24, Part 3, Section 400-7.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2500.8. Uses Not Permitted.
(a) Flexible cords and cables shall not be used (1) as a substitute for the fixed wiring of a structure; (2) where run through holes in walls, ceilings, or floors; (3) where run through doorways, windows or similar openings; (4) where attached to building surfaces; or (5) where concealed behind building walls, ceilings, or floors.
(Title 24, Part 3, Section 400-8.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2500.9. Splices.
(a) Flexible cords shall be used only in continuous lengths without splice or tap. Hard service flexible cords No. 12 or larger shall be permitted to be repaired if spliced so that the splice retains the insulation, outer sheath properties, and usage characteristics of the cord being spliced.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2500.10. Pull at Joints and Terminals.
(a) Flexible cords shall be connected to devices and fittings so that strain relief is provided which will prevent pull from being directly transmitted to joints or terminal screws.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2500.11. In Show Windows and Show Cases.
Flexible cords used in show windows and show cases shall be Type S, SO, SJ, SJO, ST, STO, SJT, SJTO, or AFS.
Exception: No. 1: For the wiring of chain-supported lighting fixtures.
Exception: No. 2: As supply cords for portable lamps and other merchandise being displayed or exhibited.
(Title 24, Part 3, Section 400-11.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2500.13. Overcurrent Protection.
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, Part 3, Section 400-13.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2500.23. Grounding-Conductor Identification.
A conductor intended to be used as a grounding conductor shall have a continuous identifying marker readily distinguishing it from the other conductor or conductors. Conductors having a continuous green color or a continuous green color with one or more yellow stripes shall not be used for other than grounding purposes. The identifying marker shall consist of one of the methods in (a) or (b) below:

(a) Colored Braid. A braid finished to show a continuous green color or a continuous green color with one or more yellow stripes.
(b) Colored Insulation or Covering. For cords having no braids on the individual conductors, an insulation of a continuous green color or a continuous green color with one or more yellow stripes.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2500.25. Maintenance of Outer Sheath.
Flexible cords shall be repaired or replaced if the outer sheath is damaged such that any conductor insulation or conductor is exposed. Repair of the outer sheath shall only be permitted if the conductors are not damaged and the completed repair retains the insulation, outer sheath properties, and usage characteristics of the cord being repaired.

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

s 2505.1. Scope.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2505.10. Uses Permitted.
Fixture wires shall be permitted: (1) for installation in lighting fixtures and in similar equipment where enclosed or protected and not subject to bending or twisting in use; or (2) for connecting lighting fixtures to the branch-circuit conductors supplying the fixtures.
(Title 24, Part 3, Section 402-10.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2505.11. Uses Not Permitted.
Fixture wires shall not be used as branch-circuit conductors.
(Title 24, Part 3, Section 402-11.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2505.12. Overcurrent Protection.
Overcurrent protection for fixture wires shall be as specified in Section 2390.1.
(Title 24, Part 3, Section 402-12.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2510.1. Maximum Voltage.
Voltage to Ground. Lampholders, fixtures, or standard receptacles rated 15 amperes or less shall not be supplied by voltages exceeding 150 volts to ground.
Exception: No. 1: Supply voltages between 150 and 300 volts to ground shall be permitted provided all of the following conditions are met:
a. Only qualified persons will service the lighting fixtures;
b. The lighting fixtures are approved for the supply voltage;
c. The fixtures, other than permanently installed electric discharge-type, are mounted not less than 8 feet above the floor. Where conditions do not permit 8 feet, the light fixture shall be permitted at the available height provided the fixtures are suitably guarded; and
d. Integral lighting switches, if used, shall not be readily accessible.
Exception: No. 2: The supply voltage may exceed 300 volts for permanently installed fixtures at a height of 18 feet or more.

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

s 2510.2. Receptacles.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2510.3. Location of Lamps.
Lamps for lighting shall be safely accessible.

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

s 2510.4. Live Parts.
Fixtures, lampholders, lamps, and receptacles shall have no live parts normally exposed to contact.
(Title 24, Part 3, Section 3-410-3.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2510.5. Wet and Damp Locations.
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.

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

s 2510.6. Portable Handlamps.
Handlamps of the portable type supplied through flexible cords shall be equipped with a handle of molded composition or other material approved for the purpose, and a substantial guard shall be attached to the lampholder or the handle.

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

s 2510.7. Receptacles.
(a) Grounding Type.
Receptacles shall be of the grounding type. Unless installed in a complete metallic raceway, each branch circuit shall contain a separate equipment grounding conductor and all receptacles shall be electrically connected to the grounding conductor.
(Title 24, Part 3, Section 210-7.)
(b) Skirted Plugs. Attachment plugs or other connectors supplying equipment at more than 300 volts shall be of the skirted type.
Exception: Plugs or connectors so designed that the arc will be confined within the body or case of the device shall be acceptable.
(Title 24, Part 3, Section 3-400-24(b).)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2510.56. Receptacles, Cord Connectors and Attachment Plugs.
(a) Attachment Plugs. All new or replacement 15- and 20-ampere attachment plugs shall be of dead-front construction such that there are no exposed current-carrying metal parts except the prongs, blades or pins.
Exception: Attachment plugs with separate insulating discs secured in place shall be permitted when the assembly is maintained in a safe condition.
(b) Noninterchange ability. Receptacles, cord connectors and attachment plugs shall be constructed so that the receptacle or cord connectors will not accept an attachment plug with a different voltage or current rating than that for which the device is intended. Nongrounding-type receptacles and connectors shall not accept grounding-type attachment plugs.
Exception: A 20-ampere T-slot receptacle or cord connector shall be permitted to accept a 15-ampere attachment plug of the same voltage rating.
(Title 24, Part 3, Section 410-56(g).)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2510.58. Grounding-Type Receptacles, Adapters, Cord Connectors, and Attachment Plugs.
(a) Grounding Poles. Grounding-type receptacles, cord connectors, and attachment plugs shall be provided with one fixed grounding pole in addition to the circuit poles.
(Title 24, Part 3, Section 410-58(a) without Exception.)
(b) Grounding-Pole Connection. Grounding-type receptacles, adapters, cord connectors, and attachment plugs shall be grounded.
Exception: Receptacles mounted on portable and vehicle-mounted generators in accordance with Section 2395.6 or 2405.4(c).
(Title 24, Part 3, Section 210-7(b).)
(c) Grounding Terminal Use. A grounding terminal or grounding-type device shall not be used for purposes other than grounding.
(Title 24, Part 3, Section 410-58(c).)
(d) Adapters. Two-pole to three-pole adapters shall not be used. Adapters permitting change to different rated (amperes or volts) configurations shall not be used.
Exception: No. 1: 15-amp receptacles shall be permitted to supply 20-amp adapters.
Exception: No. 2: Where grounding is not a requirement by Article 11 of these Orders.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.2. Energized Parts.
(a) Appliances shall have no energized parts normally exposed to contact.
Exception: Toasters, grills, or other appliances in which the current-carrying parts at high temperatures are necessarily exposed.
(Title 24, Part 3, Section 422-2.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.7. General.
All appliances shall be installed in an approved manner.
(Title 24, Part 3, Section 422-7.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.8. Flexible Cords.
(a) Heater Cords. All smoothing irons and portable electrically heated appliances that are rated at more than 50 watts and produce temperatures in excess of 121 degrees C (250 degrees F) on surfaces with which the cord is likely to be in contact shall be provided with approved heater cords.
(b) Other Heating Appliances. All other portable electrically heated appliances shall be connected with approved types of cord.
(c) Other Appliances. Flexible cord shall be permitted (1) for connection of portable appliances; (2) for connection of stationary appliances to facilitate their frequent interchange or to prevent the transmission of noise or vibration; or (3) to facilitate the removal or disconnection of fixed appliances for maintenance or repair.
(Title 24, Part 3, Section 422-8(a)-(c).)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.9. Portable Immersion Heaters.
Electric heaters of the portable immersion type shall be so constructed and installed that current-carrying parts are effectively insulated from electrical contact with the substance in which they are immersed. The authority having jurisdiction may make exceptions for special applications of apparatus if suitable precautions are taken.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.10. Protection of Combustible Material.
Each electrically heated appliance that is intended by size, weight, and service to be located in a fixed position shall be so placed as to provide ample protection between the appliance and adjacent combustible material.
(Title 24, Part 3, Section 422-10.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.11. Stands for Portable Appliances.
Each smoothing iron and other portable electrically heated appliance intended to be applied to combustible material shall be equipped with an approved stand, which shall be permitted to be a separate piece of equipment or a part of the appliance.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.12. Signals for Heated Appliances.
Electrically heated appliance or group of appliances intended to be applied to combustible material shall be provided with a signal.
Exception: If an appliance is provided with an integral temperature-limiting device.
(Title 24, Part 3, Section 422-12.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.15. Infrared Lamp Industrial Heating Appliances.
(a) Infrared heating lamps rated at 300 watts or less shall be permitted with lampholders of the medium-base, unswitched porcelain type or other types approved for the purpose.
(b) Screw shell lampholders shall not be used with infrared lamps over 300 watts rating.
Exception: Lampholders approved for the purpose.
(c) Lampholders shall be permitted to be connected to any of the branch circuits supplying lighting and/or appliance loads and, in industrial occupancies, shall be permitted to be operated in series on circuits of over 150 volts to ground provided the voltage rating of the lampholders is not less than the circuit voltage.
Each section, panel, or strip carrying a number of infrared lampholders (including the internal wiring of such section, panel, or strip) shall be considered an appliance. The terminal connection block of each such assembly shall be considered an individual outlet.
(Title 24, Part 3, Section 422-15.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.17. Wall-Mounted Ovens and Counter-Mounted Cooking Units.
(a) Wall-mounted ovens and counter-mounted cooking units complete with provisions for mounting and for making electrical connections shall be considered as fixed appliances.
(b) A separable connector or a plug and receptacle combination in the supply line to an oven or cooking unit used only for ease in servicing or for installation shall:
(1) Not be installed as the disconnecting means.
(2) Be approved for the temperature of the space in which it islocated.
(Title 24, Part 3, Section 422-17.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.21. Disconnection of Fixed Appliances.
(a) For fixed appliances rated at not over 300 volt amperes or 1/8 hp., the branch circuit overcurrent device shall be permitted to serve as the disconnecting means.
(b) For fixed appliances of greater rating the branch circuit switch or circuit breaker shall be permitted to serve as the disconnecting means where readily accessible to the user of the appliance.
(Title 24, Part 3, Section 422-21.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.22. Disconnection of Portable Appliances.
(a) For portable appliances, a separable connector or an attachment plug and receptacle shall be permitted to serve as the disconnecting means.
(b) The rating of a receptacle or of a separable connector shall not be less than the rating of any appliance connected thereto.
Exception: Demand factors authorized elsewhere in these Orders shall be permitted to be applied.
(c) Attachment plugs and connectors shall conform to the following:
(1) Energized Parts. They shall be so constructed and installed as to guard against inadvertent contact with energized parts.
(2) Interrupting Capacity. They shall be capable of interrupting their rated current without hazard to the operator.
(3) Interchange ability. They shall be so designed that they will not fit into receptacles of lesser rating.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.23. Disconnection of Stationary Appliances.
(a) For stationary appliances rated at not over 300 volt amperes or 1/8 horsepower, the branch circuit overcurrent device shall be permitted to serve as the disconnecting means.
(Title 24, Part 3, Section 422-21(a).)
(b) For stationary appliances of greater rating, the branch circuit switch or circuit breaker shall be permitted to serve as the disconnecting means where readily accessible to the user of the appliance.
(Title 24, Part 3, Section 422-21(b).)
(c) For cord-connected appliances, such as free-standing household-type ranges and clothes dryers, a separable connector or an attachment plug and receptacle shall be permitted to serve as the disconnecting means. Attachment plugs and connectors shall comply with Section 2522.22(c).
For household electric ranges, an attachment plug and receptacle connection at the rear base of a range, if it is accessible from the front by removal of a drawer, shall be considered as meeting the intent of this rule.
(Title 24, Part 3, Section 422-22(a) and (b).)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.26. Disconnecting Means for Motor-Driven Appliances.
If a switch or circuit breaker serves as the disconnecting means for a stationary or fixed motor-driven appliance of more than 1/8 horsepower, it shall be located within sight from the motor controller and shall comply with the disconnecting means specified in Article 56.
(Title 24, Part 3, Section 422-26.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.30. Nameplate.
(a) Each electric appliance shall be provided with a nameplate, giving the identifying name and the rating in volts and amperes, or in volts and watts. If the appliance is to be used on a specific frequency or frequencies, it shall be so marked.
When motor overload protection external to the appliance is required, the appliance shall be so marked.
(b) Marking shall be located so as to be visible or easily accessible after installation.
(Title 24, Part 3, Section 422-30.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.31. Marking of Heating Elements.
All heating elements that are rated over one ampere, replaceable in the field, and a part of an appliance shall be legibly marked with the ratings in volts and amperes, or in volts and watts, or with the manufacturer's part number.
(Title 24, Part 3, Section 422-31.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2522.32. Appliances Consisting of Motors and Other Loads.
Appliances shall be marked in accordance with (a) or (b) below.
(a) In addition to the marking required in Section 2522.30, the marking on an appliance consisting of a motor with other load(s) or motors with or without other load(s) shall specify the minimum circuit size and the maximum rating of the circuit overcurrent protective device.
Exception: No. 1: Portable appliances and other appliances, factory-equipped with cords and attachment plugs, complying with Section 2522.30.
Exception: No. 2: An appliance where both the minimum circuit size and maximum rating of the circuit overcurrent protective device are not more than 15 amperes and complies with Section 2522.30.
(b) An alternate marking method shall be permitted to specify the rating of the largest motor in volts and amperes, and the additional load(s) in volts and amperes or volts and watts in addition to the marking required in Section 2522.30.
Exception: No. 1: Portable appliances and other appliances, factory-equipped with cords and attachment plugs, complying with Section 2522.30.
Exception: No. 2: The ampere rating of a motor 1/8 hp. or less or a nonmotor load one ampere or less shall be permitted to be omitted unless such loads constitute the principal load.
(Title 24, Part 3, Section 422-32.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2524.1. Scope.
This article covers fixed electric equipment used for space heating. Equipment shall be of a type approved for the purpose and location where installed. For the purpose of this article, heating equipment shall include heating cable, unit heaters, boilers, central systems, or other approved fixed electric space heating equipment. This article shall not apply to process heating and room air conditioning.
(Title 24, Part 3, Section 424-1.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 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.
(Title 24, Part 3, Section 424-19.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2524.21. Switch and Circuit Breaker to Be Indicating.
Switches and circuit breakers used as disconnecting means shall be of the indicating type.
(Title 24, Part 3, Section 424-21.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 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 .
Exception: The disconnecting means shall be arranged to be locked in the "open" position if it is not within sight of the controller. A distance of 50 feet shall be considered as equivalent to being out of sight.
(Title 24, Part 3, Section 424-65.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2526.1. Scope.
This article covers electrically energized heating units, panels, and cables where embedded in driveways, walks, steps, and other areas.
(Title 24, Part 3, Section 426-1(a).)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2526.20. Disconnecting Means.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 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. Where readily accessible to the user of the equipment, the branch circuit switch or circuit breaker shall be permitted to serve as the disconnecting means. Switches used as disconnecting means shall be of the indicating type.
(Title 24, Part 3, Section 426-50.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2527.1. Scope.
The requirements of this article shall apply to electrically energized heating systems and the installation of these systems used with pipelines and/or vessels. This article covers electrical heating of pipelines and/or vessels by separate external heating elements, other than the skin electric current tracing or impedance methods.
(Title 24, Part 3, Section 427-1.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2527.2. Definitions.
For the purpose of this article:
(a) A pipeline is a length of pipe including pumps, valves, flanges, control devices, strainers and/or similar equipment for conveying fluids.
(b) A vessel is a container such as a barrel, drum, or tank for holding fluids or other material.

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

s 2527.10. General.
Equipment for pipeline and vessel electrical heating shall be of a type compatible with the chemical, thermal and physical environment.
(Title 24, Part 3, Section 427-10.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2527.11. Use.
Electric heating equipment shall be installed in such a manner as to be afforded protection from physical damage.
(Title 24, Part 3, Section 427-11.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2527.12. Marking.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 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.
(Title 24, Part 3, Section 427-13.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2527.20. Disconnecting Means.

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

s 2527.22. Overcurrent Protection.
Heaters shall be protected against overcurrent.
(Title 24, Part 3, Section 3-427-22.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2527.55. Disconnecting Means.
(a) Means shall be provided to disconnect all fixed electric pipeline or vessel heating equipment from all ungrounded conductors. The branch circuit switch or circuit breaker, where readily accessible to the user of the equipment, shall be permitted to serve as the disconnecting means. Switches used as disconnecting means shall be of the indicating type, and shall be provided with a positive lockout in the "off" position.
(b) The factory-installed attachment plug of cord-connected equipment, rated 20 amperes or less and 150 volts or less to ground is an acceptable means of disconnection.
(Title 24, Part 3, Section 427-55.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2530.4. In Sight From.
If specified that one equipment shall be "in sight from" another piece of equipment, one shall be visible and not more than 50 feet from the other.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2530.36. Fuses -In Which Conductor.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2530.43. Automatic Restarting.
(a) A motor-running overload device that can restart a motor automatically after overload tripping shall not be installed unless approved for use with the motor it protects.
(b) A motor that can restart automatically after shutdown shall not be installed if its automatic restarting can result in injury to persons.
(Title 24, Part 3, Section 430-43.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2530.74. Disconnection.
(a) General. Control circuits shall be so arranged that they will be disconnected from all sources of supply when the disconnecting means is in the "Open" position. The disconnecting means shall be permitted to consist of two or more separate devices, one of which disconnects the motor and the controller from the source(s) of power supply for the motor, and the other(s), the control circuit(s) from its power supply. Where separate devices are used, they shall be located immediately adjacent to each other.
(Title 24, Part 3, Section 430-74(a) without exceptions.)
(b) Control Transformer in Controller. Where a transformer or other device is used to obtain a reduced voltage for the control circuit and is located in the controller, such transformer or other device shall be connected to the load side of the disconnecting means for the control circuit.
(Title 24, Part 3, Section 430-74(b).)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2530.81. General.
This Section, "Motor Controllers," is intended to require suitable controllers for all motors.
(a) Definition. For definition of "Controller," see Article 1. For the purpose of this Article, the term "Controller" includes any switch or device normally used to start and stop a motor.
(b) Stationary Motor of 1/8 Horsepower or Less. For a stationary motor rated at 1/8 horsepower or less that is normally left running and is so constructed that it cannot be damaged by overload or failure to start, such as clock motors and the like, the branch circuit protective device shall be permitted to serve as the controller.
(c) Portable Motor of 1/3 Horsepower or Less. For a portable motor rated at 1/3 horsepower or less, the controller shall be permitted to be an attachment plug and receptacle.
(Title 24, Part 3, Section 430-81.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2530.82. Controller Design.
(a) Starting and Stopping. Each controller shall be capable of starting and stopping the motor it controls, and shall be capable of interrupting the stalled-rotor current of the motor.
(b) Autotransformer. An autotransformer starter shall provide an off position, a running position, and at least one starting position. It shall be so designed that it cannot rest in the starting position or in any position that will render the overload device in the circuit inoperative.
(c) Rheostats. Rheostats shall be in compliance with the following:
(1) Motor-starting rheostats shall be so designed that the contact arm cannot be left on intermediate segments. The point or plate on which the arm rests when in the starting position shall have no electrical connection with the resistor.
(2) Motor-starting rheostats for direct current motors operated from a constant voltage supply shall be equipped with automatic devices that will interrupt the supply before the speed of the motor has fallen to less than 1/3 its normal value.
(Title 24, Part 3, Section 430-82.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.

s 2530.83. Rating.
The controller shall have a horsepower rating not lower than the horsepower rating of the motor.
Exception: No. 1: For a stationary motor rated at 2 horsepower or less, and 300 volts or less, the controller shall be permitted to be a general-use switch having an ampere rating not less than twice the full load current rating of the motor. On AC circuits, general-use snap switches suitable only for use on AC (not general-use AC-DC snap switches) shall be permitted to control a motor rated at 2 horsepower or less and 300 volts or less having a full load current rating not more than 80 percent of the ampere rating of the switch.
Exception: No. 2: A branch circuit inverse time circuit breaker rated in amperes only shall be permitted as a controller. Where this circuit breaker is also used for overload protection, it shall conform to theappropriate provisions of this Article governing overload protection. (continued)