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

(continued)

Appendix C
Helpful Construction Methods
PLATE C-1 EFFICIENCY OF WIRE ROPE CONNECTIONS

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

APPENDIX. PLATE C-36-a SAFE PRACTICES -HELICOPTERS
1. Do not approach or leave a helicopter while its engines are running unless in a crouched position and the pilot or pilot's designee signals that it is safe to do so.
2. Always approach and leave the helicopter in plain view of the pilot or as directed by the pilot's designee; never from the rear.
3. Approach and leave the helicopter on a level with the craft or a lower level, never from or to higher ground than that of the helicopter.
4. Wear goggles and head protection with chin strap under the chin when in the vicinity of an operating helicopter. Loose-fitting clothing likely to flap in the downwash and possibly be snagged on the hoist line shall not be worn.
5. Load all cargo and secure it to the satisfaction of the pilot or pilot's designee.
6. Do not put tag lines on sling loads without the pilot's or pilot's designee's permission and limit their numbers, their placement, and their lengths to the pilot's satisfaction.
7. Do not place explosives, flammables, or other dangerous materials on board any aircraft without the pilot's knowledge.
8. Carry all materials to or from the helicopter in a horizontal position not above waist level.
9. Do not smoke within 50 feet of a helicopter, fuel storage, or fueling operation.
10. Do not stand directly under a hovering helicopter longer than necessary to hook-up or unhook the load.
11. Always watch the helicopter, sling load, hook, or bottom end of the cable to avoid being hit.
12. Know the escape procedure at each operation site.
13. Keep landing and hovering areas clear of loose and lightweight materials.
14. Notify the person in charge of the project when erecting a suspended line, tower or other navigational hazard.
15. Turn off radio transmitter when in vicinity of explosives or explosive loading operations.
16. Passengers transported by helicopter shall be instructed to:
(A) Board and depart only on instruction from the pilot.

(B) Use seat belts during take off, flight, and landing.
(C) Do not talk unnecessarily to the pilot.
(D) Remain seated during the time you are aboard.
(E) Watch for other airborne aircraft and navigational hazards and call them to the attention of the pilot.
(F) Do not smoke unless permitted by the pilot.
17. When performing as a crew member in external operations, listen to and be familiar with the normal sounds emitted by the helicopter in flight so that you will have the earliest notice of trouble and can avoid dangerous exposure.
(18) When visibility is reduced by dust or other conditions, ground personnel shall exercise special caution to keep clear of main and stabilizing rotors.

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

s 2299. Foreword.

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

s 2300. Scope.
(a) Only definitions of terms peculiar to and essential to the proper use of this Safety Order are included. In general, only those terms used in two or more Articles are defined in Article 1. Other definitions are included in the Article in which they are used but may be referenced in Article 1.
(b) Definitions.
Accessible.
(A) Equipment Application (Other than Wiring Methods). Admitting close approach because not guarded by locked doors, elevation, or other effective means.
(B) Readily. Capable of being reached quickly for operation, renewal, or inspections, without requiring those to whom ready access is requisite to climb over or remove obstacles or to resort to portable ladders, chairs, etc.
(C) Safely. Not exposing persons installing, operating, maintaining, or inspecting electrical apparatus to serious risks of tripping or falling or of coming in contact with energized electrical parts, moving machinery, surfaces or objects operating at high temperatures or other hazardous equipment.
(D) Wiring Method Application. Capable of being removed or exposed without damaging the building structure or finish, or not permanently closed in by the structure or finish of the building (see "Concealed" and "Exposed").
Ampacity. Current-carrying capacity of electric conductors expressed in amperes.

Appliance. Utilization equipment, generally other than industrial, normally built in standardized sizes or types, which is installed or connected as a unit to perform one or more functions such as clothes washing, air conditioning, food mixing, deep frying, etc.
Appliance, Fixed. An appliance which is fastened or otherwise secured at a specific location.
Appliance, Portable. An appliance which is actually moved or can easily be moved from one place to another in normal use.
Askarel. A generic term for a group of nonflammable synthetic chlorinated hydrocarbons used as electrical insulating media. Askarels of various compositional types are used. Under arcing conditions the gases produced, while consisting predominantly of noncombustible hydrogen chloride, can include varying amounts of combustible gases depending upon the askarel type.
Attachment Plug (Plug Cap) (Cap). A device which, by insertion in a receptacle, establishes connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle.

Authorized Person. A qualified person delegated to perform specific duties under the conditions existing.
Bond. An electrical connection from one metallic element to another for the purpose of minimizing potential differences and providing suitable conductivity for fault current or for mitigation of leakage current and electrolytic action.
Bonding. The permanent joining of metallic parts to form an electrically conductive path which will assure electrical continuity and the capacity to conduct safely any current likely to be imposed.
Bonding Jumper. A reliable conductor to assure the required electrical conductivity between metal parts required to be electrically connected.
Bonding Jumper, Circuit. The connection between portions of a conductor in a circuit to maintain required ampacity of the circuit.
Bonding Jumper, Equipment. The connection between two or more portions of the equipment grounding conductor.
Bonding Jumper, Main. The connection between the grounded circuit conductor and the equipment grounding conductor at the service.
Branch Circuit. The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s).
Branch Circuit, Appliance. A branch circuit supplying energy to one or more outlets to which appliances are to be connected; such circuits to have no permanently connected lighting fixtures not a part of an appliance.
Branch Circuit, General Purpose. A branch circuit that supplies a number of outlets for lighting and appliances.
Branch Circuit, Individual. A branch circuit that supplies only one utilization equipment.
Branch Circuit, Multiwire. A branch circuit consisting of two or more ungrounded conductors having a potential difference between them, and an identified grounded conductor having equal potential difference between it and each ungrounded conductor of the circuit and which is connected to the neutral conductor of the system.

Building. A structure which stands alone or which is cut off from adjoining structures by fire walls with all openings therein protected by approved fire doors.
Building Space. A room, vault, or wiring enclosures such as conduit, pull box, switchboards, and other like enclosures.
Cabinet. An enclosure designed either for surface or flush mounting and provided with a frame, mat, or trim in which a swinging door or doors are or may be hung.
Circuit Breaker. A device designed to open and close a circuit by nonautomatic means and to open the circuit automatically on a predetermined overcurrent without injury to itself when properly applied within its rating.
(A) Adjustable. (As applied to Circuit Breakers.) A qualifying term indicating that the circuit breaker can be set to trip at various values of current and/or time within a predetermined range.
(B) Instantaneous Trip. (As applied to Circuit Breakers.) A qualifying term indicating that no delay is purposely introduced in the tripping action of the circuit breaker.
(C) Inverse Time. (As applied to Circuit Breakers.) A qualifying term indicating there is purposely introduced a delay in the tripping action of the circuit breaker, which delay decreases as the magnitude of the current increases.
(D) Nonadjustable. (As applied to Circuit Breakers.) A qualifying term indicating that the circuit breaker does not have any adjustment to alter the value of current at which it will trip or the time required for its operation.
(E) Setting. (Of Circuit Breaker.) The value of current and/or time at which an adjustable circuit breaker is set to trip.
Concealed. Rendered inaccessible by the structure or finish of the building. Wires in concealed raceways are considered concealed, even though they may become accessible by withdrawing them. [See "Accessible -(As applied to wiring methods)"]
Conductor.

(A) Bare. A conductor having no covering or electrical insulation whatsoever. (See "Conductor, Covered.")
(B) Covered. A conductor encased within material of composition or thickness that is not recognized by these Orders as electrical insulation. (See "Conductor, Bare.")
(C) Insulated. A conductor encased within material of composition and thickness that is recognized by these Orders as electrical insulation.
Conduit. (See "Raceway.")
Connector, Pressure (Solderless). A device that establishes a connection between two or more conductors or between one or more conductors and a terminal by means of mechanical pressure and without the use of solder.
Continuous Duty. (See under "Duty.")
Continuous Load. A load where the maximum current is expected to continue for three hours or more.

Controller. A device or group of devices that serves to govern, in some predetermined manner, the electric power delivered to the apparatus to which it is connected.
Cooking Unit, Counter-Mounted. A cooking appliance designed for mounting in or on a counter and consisting of one or more heating elements, internal wiring, and built-in or separately mountable controls. (See "Oven, Wall-Mounted.")
Covered Conductor. (See under "Conductor.")
Cutout Box. An enclosure designed for surface mounting and having swinging doors or covers secured directly to and telescoping with the walls of the box proper. (See "Cabinet.")
Damp Location. (See under "Location.")
Dead Front (As applied to switches, circuit breakers, switchboards, control panels, and panelboards). So designed, constructed, and installed that no energized parts are exposed on the front.
Demand Factor. The ratio of the maximum demand of a system, or part of a system, to the total connected load of a system or the part of the system under consideration.
Device. A unit of an electrical system which is intended to carry but not utilize electric energy.
Different Systems. Those which derive their supply from different sources, or from individual transformers or banks of transformers which do not have their secondary windings interconnected, or from individual service switches.
Disconnecting Means. A device, or group of devices, or other means by which the conductors of a circuit can be disconnected from their source of supply.
Division. Unless otherwise designated in this subchapter, the term "Division" refers to the current Division of Occupational Safety and Health or any of its predecessors including the former Division of Industrial Safety or the Division of Occupational Safety and Health Administration. Reference to the former Division of Industrial Safety or Division of Occupational Safety and Health Administration in these orders is meant to refer to their successor, the Division of Occupational Safety and Health, or any subsequent successor agency.

Dry Location. (See under "Location.")
Dustproof. So constructed or protected that dust will not interfere with its successful operation.
Dust-Tight. So constructed that dust will not enter the enclosing case.
Duty.
(A) Continuous Duty. Operation at a substantially constant load for an indefinitely long time.
(B) Intermittent Duty. Operation for alternate intervals of (1) load and no load; or (2) load and rest; or (3) load, no load and rest.
(C) Periodic Duty. Intermittent operation in which the load conditions are regularly recurrent.
(D) Short Time Duty. Operation at a substantially constant load for a short and definitely specified time.

(E) Varying Duty. Operation at loads, and for intervals of time, both of which may be subject to wide variation.
Enclosed. Surrounded by a case, housing, fence or walls which will prevent persons from accidentally contacting energized parts.
Enclosure. The case or housing of apparatus, or the fence or wall surrounding an installation to prevent personnel from accidentally contacting energized parts, or to protect the equipment from physical damage.
Energized Parts (Live Parts). Parts which are of a potential different from that of the earth, or some conducting body which serves in place of the earth.
Equipment. A general term including material, fittings, devices, appliances, fixtures, apparatus, and the like used as a part of, or in connection with, an electrical installation.
Explosion-Proof Apparatus. Apparatus enclosed in a case that is capable of withstanding an explosion of a specified gas or vapor which may occur within it and of preventing the ignition of a specified gas or vapor surrounding the enclosure by sparks, flashes, or explosion of the gas or vapor within, and which operates at such an external temperature that a surrounding flammable atmosphere will not be ignited thereby.
Exposed. (As applied to live parts.) Capable of being inadvertently touched or approached nearer than a safe distance by a person. It is applied to parts not suitably guarded, isolated, or insulated. (See "Accessible" and "Concealed.")
Exposed. (As applied to wiring methods.) On or attached to the surface or behind panels designed to allow access. [See "Accessible -(As applied to wiring methods)"]
Externally Operable. Capable of being operated without exposing the operator to contact with live parts.
Feeder. All circuit conductors between the service equipment, or the generator switchboard of an isolated plant, and the final branch circuit overcurrent device.
Fitting. An accessory such as a locknut, bushing, or other part of a wiring system that is intended primarily to perform a mechanical rather than an electrical function.

Ground. A conducting connection, whether intentional or accidental, between an electrical circuit or equipment and the earth, or to some conducting body that serves in place of the earth.
Grounded. Connected to earth or to some conducting body that serves in place of the earth.
Grounded Conductor. A system or circuit conductor that is intentionally grounded.
Grounding Conductor. A conductor used to connect equipment or the grounded circuit of a wiring system to a grounding electrode or electrodes.
Grounding Conductor, Electrode. The conductor used to connect the grounding electrode to the equipment grounding conductor and/or to the grounded conductor of the circuit at the service or at the source of a separately derived system.
Grounding Conductor, Equipment. The conductor used to connect noncurrent-carrying metal parts of equipment, raceways, and other enclosures to the system grounded conductor at the service and/or the grounding electrode conductor or at the source of a separately derived system.
Ground-Fault Circuit-Interrupter. A device intended for the protection of personnel that functions to de-energize a circuit or portion thereof within an established period of time when a current to ground exceeds some predetermined value that is less than that required to operate the overcurrent protective device of the supply circuit.
Guarded. Covered, shielded, fenced, enclosed, or otherwise protected by means of suitable covers, casings, barriers, rails, screens, mats, or platforms to remove the likelihood of approach or contact by persons or objects to a point of danger.
Interlock. An electrical, mechanical, or key-locked device intended to prevent an undesired sequence of operations.
Interrupting Rating. The highest current at rated voltage that an overcurrent protective device is intended to interrupt under standard test conditions.
Isolated. Not readily accessible to persons unless special means for access are used.

Labeled. Equipment or materials having a label, symbol, or other identifying mark of a nationally recognized testing laboratory, inspection agency, or other organization concerned with product evaluation that maintains periodic inspection of production of labeled equipment or materials and by whose labeling is indicated compliance with nationally recognized standards or tests to determine suitable usage in a specified manner.
Lighting Outlet. An outlet intended for the direct connection of a lampholder, a lighting fixture, or a pendant cord terminating in a lampholder.
Listed. Equipment or materials included in a list published by a nationally recognized testing laboratory, inspection agency, or other organization concerned with product evaluation that maintains periodic inspection of production of listed equipment or materials, and whose listing states either that the equipment or material meets nationally recognized standards or has been tested and found suitable for use in a specified manner.
The means for identifying listed equipment may vary for each testing laboratory, inspection agency, or other organization concerned with product evaluation, some of which do not recognize equipment as listed unless it is also labeled. The authority having jurisdiction should utilize the system employed by the listing organization to identify a listed product.
Location.
(A) Damp Location. Partially protected locations under canopies, marquees, roofed open porches, and like locations, and interior locations subject to moderate degrees of moisture, such as some basements, some barns, and some cold storage warehouses.
(B) Dry Location. A location not normally subject to dampness or wetness. A location classified as dry may be temporarily subject to dampness or wetness, as in the case of a building under construction.
(C) Wet Location. Installations underground or in concrete slabs or masonry in direct contact with the earth, and locations subject to saturation with water or other liquids, such as vehicle washing areas, and locations exposed to weather and unprotected.
Locking in the Open Position. The use of lockable devices, such as padlocks, combination locks or other positive methods or procedures which will effectively prevent unexpected or inadvertent energizing of a designated circuit, equipment or appliance.
Metal-Enclosed. Metal-enclosed, as an adjective, refers to electrical apparatus surrounded by a metal case or housing.
Open Wiring. Uninsulated conductors or insulated conductors without grounded metallic sheaths or shields installed above ground, but not inside apparatus or wiring enclosures.
Outlet. A point on the wiring system at which current is taken to supply utilization equipment.
Outline Lighting. An arrangement of incandescent lamps or electric discharge tubing to outline or call attention to certain features such as the shape of a building or the decoration of a window.
Oven, Wall-Mounted. An oven for cooking purposes designed for mounting in or on a wall or other surface and consisting of one or more heating elements, internal wiring, and built-in or separately mountable controls. (See "Cooking Unit, Counter-Mounted.")

Panelboard. A single panel or group of panel units designed for assembly in the form of a single panel including buses, automatic overcurrent devices, and with or without switches for the control of light, heat, or power circuits; designed to be placed in a cabinet or cutout box placed in or against a wall or partition and accessible only from the front. (See "Switchboard.")
Power Outlet. An enclosed assembly which may include receptacles, circuit breakers, fuseholders, fused switches, buses and watt-hour meter mounting means; intended to supply and control power to mobile homes, recreational vehicles or boats, or to serve as a means for distributing power required to operate mobile or temporarily installed equipment.
Premises Wiring (System). That interior and exterior wiring, including power, lighting, control, and signal circuit wiring together with all of its associated hardware, fittings, and wiring devices; both permanently and temporarily installed which extends from the load end of the service drop, or load end of the service lateral conductors to the outlet(s). Such wiring does not include wiring internal to appliances, fixtures, motors, controllers, motor control centers, and similar equipment.

Pull Box. A box with a blank cover into which workers may reach but not enter which is inserted in one or more runs of raceway to facilitate pulling, joining, supporting, distributing or inspecting conductors. The term "pull box" includes but is not limited to: junction boxes, splice boxes, conductor support boxes, inspection boxes, and handholes.
Qualified Person. A person, designated by the employer, who by reason of experience or instruction has demonstrated familiarity with the operation to be performed and the hazards involved.
Raceway. An enclosed channel designed expressly for holding wires, cables, or busbars, with additional functions as permitted in these orders.
Raceways may be of metal or insulating material, and the term includes rigid metal conduit, rigid nonmetallic conduit, intermediate metal conduit, liquid-tight flexible metal conduit, flexible metallic tubing, flexible metal conduit, electrical nonmetallic tubing, electrical metallic tubing, underfloor raceways, cellular concrete floor raceways, cellular metal floor raceways, surface raceways, wireways, and busways.
Rainproof. So constructed, protected, or treated as to prevent rain from interfering with successful operation of the apparatus.
Raintight. So constructed or protected that exposure to a beating rain will not result in the entrance of water.
Receptacle. A contact device installed at the outlet for the connection of a single attachment plug.
A single receptacle is a single contact device with no other contact device on the same yoke. A multiple receptacle is a single device containing two or more receptacles.
Receptacle Outlet. An outlet where one or more receptacles are installed.
Remote-Control Circuit. Any electric circuit that controls any other circuit through a relay or an equivalent device.
Separately Derived System. A premises wiring system whose power is derived from generator, transformer, or converter windings and has no direct electrical connection, including a solidly connected grounded circuit conductor, to supply conductors originating in another system.

Service. The conductors and equipment for delivering energy from the electricity supply system to the wiring system of the premises served.
Service Conductors. The supply conductors that extend from the street main or from transformers to the service equipment of the premises supplied.
Service Drop. The overhead service conductors from the last pole or other aerial support to and including the splices, if any, connecting to the service-entrance conductors at the building or other structure.
Service-Entrance Conductors, Overhead System. The service conductors between the terminals of the service equipment and a point usually outside the building, clear of building walls, where joined by tap or splice to the service drop.
Service-Entrance Conductors, Underground System. That portion of the service conductors between the terminal box located either inside or outside the building wall, or the point of entrance in the building if no terminal box is installed, and the service equipment.

Service Equipment. The necessary equipment, usually consisting of a circuit breaker or switch and fuses, and their accessories, located near the point of entrance of supply conductors to a building or other structure, or an otherwise defined area, and intended to constitute the main control and means of cutoff of the supply.
Service Lateral. The underground service conductors between the street main, including any risers at a pole or other structure or from transformers, and the first point of connection to the service-entrance conductors in a terminal box or meter or other enclosure with adequate space inside or outside the building wall. Where there is no terminal box, meter, or other enclosure with adequate space, the point of connection shall be considered to be the point of entrance of the service conductors into the building.
Service Raceway. The raceway that encloses the service-entrance conductors.
Suitable. Capable of performing with safety the particular function specified in these Orders.
Switches.

(A) General-Use Switch. A switch intended for use in general distribution and branch circuits. It is rated in amperes, and it is capable of interrupting its rated current at its rated voltage.
(B) General-Use Snap Switch. A form of general-use switch so constructed that it can be installed in flush device boxes or on outlet box covers, or otherwise used in conjunction with wiring systems recognized by this Order.
(C) Isolating Switch. A switch intended for isolating an electric circuit from the source of power. It has no interrupting rating, and it is intended to be operated only after the circuit has been opened by some other means.
(D) Motor Circuit Switch. A switch, rated in horsepower, capable of interrupting the maximum operating overload current of a motor of the same horsepower rating as the switch at the rated voltage.
Switchboard. A large single panel, frame, or assembly of panels on which are mounted, on the face or back or both, switches, overcurrent and other protective devices, buses, and usually instruments. Switchboards are generally accessible from the rear as well as from the front and are not intended to be installed in cabinets. (See "Panelboard.")

Thermal Cutout. An overcurrent protective device that contains a heater element in addition to and affecting a renewable fusible member which opens the circuit. It is not designed to interrupt short-circuit currents.
Thermally Protected. (As applied to motors.) The words "Thermally Protected" appearing on the nameplate of a motor or motor-compressor indicate that the motor is provided with a thermal protector.
Thermal Protector. An inherent overheating protective device which is responsive to temperature and/or current and which protects the equipment against overheating due to overload or failure to start.
Utilization Equipment. Equipment which utilizes electric energy for mechanical, chemical, heating, lighting, or similar purposes.
Vehicle. A device by which any person or property may be propelled, moved, or drawn, excepting a device moved by human power or used exclusively upon stationary rails or tracks.
Volatile Flammable Liquid. A flammable liquid having a flash point below 38 degrees C (100 degrees F) or whose temperature is above its flash point.
Voltage (Of A Circuit). The greatest root-mean-square (effective) difference of potential between any two conductors of the circuit concerned.
Some systems, such as 3-phase 4-wire, single-phase 3-wire, and 3-wire direct-current may have various circuits of various voltages.
Voltage, Nominal. A nominal value assigned to a circuit or system for the purpose of conveniently designating its voltage class (as 120/240, 480Y/277, 600, etc.).
The actual voltage at which a circuit operates can vary from the nominal within a range that permits satisfactory operation of equipment. (See "Voltage Ratings for Electric Power Systems and Equipment (60 Hz)," ANSI C84.1-1977 and supplement C84.1a-1980.)
Voltage to Ground. For grounded circuits, the voltage between the given conductor and that point or conductor of the circuit that is grounded; for ungrounded circuits, the greatest voltage between the given conductor and any other conductor of the circuit.

Watertight. So constructed that moisture will not enter the enclosure.
Weatherproof. So constructed or protected that exposure to the weather will not interfere with successful operation.
Rainproof, raintight, or watertight equipment can fulfill the requirements for weatherproof, where varying weather conditions other than wetness, such as snow, ice, dust, or temperature extremes, are not a factor.
(Title 24, Part 3, Article 3-100.)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 1893(c), Health and Safety Code.

s 2305.1. Purpose.
The purpose of these Electrical Safety Orders is to provide minimum safety requirements and assist in the elimination of accidents which may result from the operation, installation, removal, use and maintenance of electrical equipment and tools.

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

s 2305.2. Application.
(a) These Low-Voltage Electrical Safety Orders apply to all electrical installations and electrical equipment operating or intended to operate on systems of 600 volts, nominal, or less and to all work performed directly on or in proximity to such electrical installations, equipment or systems in all places of employment in the State of California as defined in Labor Code Section 6303. These Orders do not apply to:

(1) Installations or conductors and equipment in ships, watercraft, railway rolling stock, or aircraft.
(2) Installations of conductors and equipment in vehicles, operating at less than 50 volts or to their ignition system, unless otherwise specified.
(3) Installations of conductors, equipment, and associated enclosures subject to the jurisdiction of the California Public Utilities Commission, that are owned, operated and maintained by an electric, communication or electric railway utility.
Exception: No. 1. These orders apply to conduit, vaults, and other like enclosures containing the conductors and equipment of such a utility when located indoors on premises not used exclusively for utility purposes, but do not apply to the utilities conductors and the equipment therein.
Exception: No. 2. Article 3, Work Procedures, apply to all work performed by electric utilities.
(Title 24, Part 3, Section 3-089-4.)
(b) After the date on which these Orders become effective, all installations and equipment shall conform to these Orders.
Exception: Existing installations and equipment which were in compliance with safety orders, or variances therefrom, in effect prior to the effective date of these Safety Orders, unless the hazard presented by the installation or equipment is, in the judgement of the Chief of the Division, of such severity as to warrant control by the application of the applicable Sections of these Orders.
(c) Regulations herein which may affect Building Standards apply to all building, or building alteration, or building modification for which construction is commenced after the effective date of the regulations. Date of commencement of construction for the purpose of this Section, shall be:
(1) The advertising date for invitation of bids for State and local government projects;
(2) The building construction permit issuance date for other than government projects.

(Title 24, Part 3, Section 3-089-14.)
(d) For installation requirements not specifically contained herein, installations in compliance with Title 24, Part 3, State Electrical Code, in effect at the time of construction, will be considered as complying with the intent of these orders.
(e) Nothing contained in these regulations shall be considered as abrogating the provisions relating to public safety of any ordinance, rule or regulation of any governmental agency, providing such local ordinance, rule or regulation does not lessen the provisions for safety contained in these regulations.

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

s 2305.3. Variances.
(a) Any employer may apply to the Division for a temporary order granting a variance from an occupational safety and health standard. Such temporary order shall be granted only if the employer files an application which meets the requirements of Section 6450 through 6457, inclusive, of the California Labor Code.
(b) Any employer may apply to the Occupational Safety and Health Standards Board for a permanent variance from an occupational safety and health standard, order, special order, or portion thereof upon a showing of an alternative program, method, practice, means, device or process which will provide equal or superior safety for employees. Such application shall conform to the requirements of the California Administrative Code, Title 8, Chapter 3.5.

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

s 2305.4. Approvals.
The conductors and equipment required or permitted by these orders shall be acceptable only if approved.
(Title 24, Part 3, Section 110-2.)
(a) When the term "approved" is used in these orders, it shall refer to products, materials, devices, systems, or installations that have been approved, listed, labeled, or certified as conforming to applicable governmental or other nationally recognized standards, or applicable scientific principles. The approval, listing, labeling, or certification of conformity, shall be based upon an evaluation performed by a person, firm, or entity with appropriate registered engineering competence or by a person, firm, or entity, independent of the manufacturer or supplier of the product, with demonstrated competence in the field of such evaluation.
Exception: Where written approval by the Division is required in these orders.
(b) The Division may require proof in addition to that under (a) that the products, materials, devices, systems, or installations will provide reasonable safety under the conditions of use.
(c) When these orders require an approval of products, materials, devices, systems, or installations and that approval is not available under (a), it will be necessary to submit to the Division engineering calculations, stress analyses, and other data for each design, model, or make for which an approval is requested. The Division will then approve or disapprove the product, material, device, system, or installation as submitted or under specified conditions.

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

s 2320.1. General.
(a) Only qualified persons shall work on electrical equipment or systems.
(b) Only qualified persons shall be permitted to perform any function in proximity to energized overhead conductors unless means to prevent accidental contact have been provided in accordance with Articles 3 and 4 of these orders.

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

s 2320.2. Energized Equipment or Systems.
(a) Work shall not be performed on exposed energized parts of equipment or systems until the following conditions are met:
(1) Responsible supervision has determined that the work is to be performed while the equipment or systems are energized.
(2) Involved personnel have received instructions on the work techniques and hazards involved in working on energized equipment.
(3) Suitable personal protective equipment and safeguards (i.e., approved insulated gloves or insulated tools) are provided and used.
(A) Rubber insulating gloves shall meet the provisions of the American Society for Testing Materials (ASTM) D 120-95, Standard Specification for Rubber Insulating Gloves, which is hereby incorporated by reference.
(B) Insulated tools shall meet the provisions of the American Society for Testing Materials (ASTM) F 1505-94, Standard Specification for Insulated and Insulating Hand Tools, which is hereby incorporated by reference.
(4) Approved insulated gloves shall be worn for voltages in excess of 250 volts to ground.
(5) Suitable barriers or approved insulating material shall be provided and used to prevent accidental contact with energized parts.
(6) Suitable eye protection has been provided and is used.

(7) Where required for personnel protection, suitable barricades, tags, or signs are in place.
(8) Each employee who is exposed to the hazards of flames or electric arcs wears apparel that, when exposed to flames or electric arcs, does not increase the extent of injury that would be sustained by the employee. This subsection prohibits clothing made from the following types of fabrics, either alone or in blends, unless the employee can demonstrate that the fabric has been treated with flame retardant: acetate, nylon, polyester, and rayon.
(b) After the required work on an energized system or equipment has been completed, an authorized person shall be responsible for:
(1) Removing from the work area any temporary personnel protective equipment, and
(2) Reinstalling all permanent barriers or covers.

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

s 2320.3. Tests.
All electrical equipment and systems shall be treated as energized as required by Section 2320.2 until tested or otherwise proven to be de-energized.

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

s 2320.4. De-Energized Equipment or Systems.
(a) An authorized person shall be responsible for the following before working on de-energized electrical equipment or systems unless the equipment is physically removed from the wiring system:
(1) Notifying all involved personnel.
(2) Locking the disconnecting means in the "open" position with the use of lockable devices, such as padlocks, combination locks or disconnecting of the conductor(s) or other positive methods or procedures which will effectively prevent unexpected or inadvertent energizing of a designated circuit, equipment or appliance. Note:See also Section 3314 of the General Industry Safety Orders (GISO) for lock-out requirements pertaining to the cleaning, repairing, servicing and adjusting of prime movers, machinery and equipment.
Exception: Locking is not required under the following conditions: (A) Where tagging procedures are used as specified in subsection (a)(3), and (B) Where the disconnecting means is accessible only to personnel instructed in these tagging procedures.
(3) Tagging the disconnecting means with suitable accident prevention tags conforming to the provisions of Section 2320.6 and GISO Section 3314(e).
(4) Effectively blocking the operation or dissipating the energy of all stored energy devices which present a hazard, such as capacitors or pneumatic, spring-loaded and like mechanisms.

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

s 2320.5. Energizing (or Re-Energizing) Equipment or Systems.
(a) An authorized person shall be responsible for the following before energizing equipment or systems which have been de-energized:
(1) Determining that all persons are clear from hazards which might result from the equipment or systems being energized.
(2) Removing locking devices and tags.

(A) Locking devices and tags may be removed only by the employee who placed them. Locking devices and tags shall be removed upon completion of the work and after the installation of the protective guards and/or safety interlock systems.
Exception: When the employee has left the premises or is otherwise unavailable, other persons may be authorized by the employer to remove the locking devices and tags in accordance with a procedure determined by the employer.

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

s 2320.6. Accident Prevention Tags.
(a) Suitable accident prevention tags shall be used to control a specific hazard. Such tags shall provide the following minimum information:
(1) Reason for placing tag.
(2) Name of person placing the tag and how that person may be contacted.

(3) Date tag was placed.

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

s 2320.7. Safety Precautions.
(a) Suitable temporary barriers, or barricades, shall be installed when access to opened enclosures containing exposed energized electrical equipment is not under the control of an authorized person.
(b) Conductive measuring tapes, ropes or similar measuring devices shall not be used when working on or near exposed energized conductors or parts of equipment.
(c) Conductive fish tapes shall not be used in raceways entering enclosures containing exposed energized parts unless such parts are isolated by suitable barriers.
(d) Prior to climbing poles or other elevated structures supporting overhead electrical lines or equipment, an inspection shall be made to assure that such poles or structures are in safe condition for the work to be performed. Where poles or structures are determined to be unsafe for climbing, they shall not be climbed until made safe by guying, bracing or other adequate means.

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

s 2320.8. Fall Protection.
(a) Fall Protection. When work is performed at elevated locations more than 4 feet (1.2 meters) above the ground on poles, towers or similar structures, the employer shall require the employees to use either fall arrest equipment, work positioning equipment, or travel restricting equipment, if other fall protection methods have not been provided (e.g., guardrails, safety nets, etc.). The use of body belts for fall arrest systems is prohibited.
Exception: Point to point travel by a qualified person, unless conditions such as ice, high winds, design of the structure, or other condition (e.g., chemical contaminants) prevents the employee from gaining a firm hand or foothold while traveling.

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

s 2320.9. Backfeeding or Interconnection.
No electrical power source, permanent or temporary, shall be connected to a premises wiring system, or parts of such a system, unless positive means are used to prevent the transmission of electricity beyond the premises wiring system, or beyond any intentionally segregated parts of such system.
Exception: When an interconnection has been authorized by the servicing utility.

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

s 2340.1. Maintenance.
Electrical equipment shall be maintained free from recognized hazards that are likely to cause death or serious physical harm to employees.

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

s 2340.5. Conductors.

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

s 2340.8. Wiring Methods.

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

s 2340.9. Interrupting Rating.
(a) Equipment intended to break current at fault levels shall have an interrupting rating sufficient for the system voltage and the current which is available at the line terminals of the equipment.
(b) Equipment intended to break current at other than fault levels shall have an interrupting rating at system voltage sufficient for the current that must be interrupted.
(Title 24, Part 3, Section 110-9.)

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

s 2340.10. Circuit Impedance and Other Characteristics.

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

s 2340.11. Deteriorating Agents.
(a) Unless approved for the purpose, no conductors or equipment shall be:
(1) Located in damp or wet locations.
(2) Exposed to gases, fumes, vapors, liquids, or other agents which could have a deteriorating effect.

(3) Exposed to excessive temperatures.
(Title 24, Part 3, Section 110-11.)

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

s 2340.12. Installation and Maintenance.

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

s 2340.13. Mounting and Cooling of Equipment.
(a) Mounting. Electric equipment shall be firmly secured to the surface on which it is mounted.
(b) Cooling. Electrical equipment provided with ventilating openings shall be maintained so that free circulation of air through the equipment is not obstructed.
(Title 24, Part 3, Section 110-13.)

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

s 2340.14. Electrical Connections.

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

s 2340.16. Work Space About Electric Equipment.
(a) Suitable access and working space shall be provided and maintained about all electric equipment to permit ready and safe operation and maintenance of such equipment.
(b) Work Space. Except as elsewhere required or permitted in these orders, the dimension of the working space in the direction of access to energized parts in switchboards, control panels, fused switches, circuit breakers, panelboards, motor controllers, and similar equipment which require examination, adjustment, servicing, or maintenance while energized, shall not be less than indicated in Table 2340.16. In addition to the dimensions of depth shown in Table 2340.16, the workspace in the direction of access to the equipment shall not be less than 30 inches wide. Depth distances shall be measured from the energized parts if such are normally exposed or from the enclosure front or opening if such are normally enclosed. Concrete, brick, or tile walls shall be considered as grounded. In all cases, the workspace shall be adequate to permit at least a 90 degree opening of doors or hinged panels.
Exception: Working space shall not be required in back of assemblies, such as dead-front switchboards or motor controllers where there are no renewable or adjustable parts such as fuses or switches on the back and where all connections are accessible from locations other than the back.
TABLE 2340.16. WORK SPACE

_______________________________________________________________________________
VOLTAGE TO GROUND MINIMUM CLEAR DISTANCE (Feet)

Condition: 1 2 3
0-150 3 [FNa1] 3 [FNa1] 3
151-600 3 [FNa1] 3-1/2 4
_______________________________________________________________________________
[FNa1] Exception: Minimum clear distances may be 2 feet 6 inches for
installations built prior to April 16, 1981.

Where the "Conditions" are as follows:
(1) Exposed energized parts on one side and no energized or grounded parts on the other side of the working space, or exposed energized parts on both sides effectively guarded by suitable wood or other insulating materials. Insulated wire or insulated busbars operating at 300 volts or less shall not be considered energized parts.
(2) Exposed energized parts on one side and grounded parts on the other side.
(3) Exposed energized parts on both sides of the workspace (not guarded as provided in Condition (1)) with the operator between.

(See also Plates 2340.16(a)(1) and 2340.16(a)(2).)
(c) Clear Spaces. Working space required by this section shall not be used for storage. When normally enclosed energized parts are exposed for inspection or servicing, the working space, if in a passageway or general open space, shall be suitably guarded.
(d) Entrance and Access to Workspace. At least one entrance of sufficient area shall be provided to give access to the working space about electric equipment. For switchboards and control panels rated 1,200 amperes or more and over 6 feet wide, there shall be one entrance not less than 24 inches wide and 6 feet 6 inches high at each end of the workspace.
Attics, furred ceilings and underfloor spaces shall have minimum unobstructed access openings of 22 inches by 30 inches.
(e) Illumination. Portable or fixed illumination, suitable for the nature of the work being performed, shall be provided when working on electrical equipment. The light fixtures and their control points shall be so arranged that persons operating light switches, replacinglamps or making repairs on the lighting system will not be endangered by energized parts of other equipment. (continued)