reglab/statecodes huggingface dataset:
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2834 - Fused Interrupter Switches

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
						Fused interrupter switches shall be so installed that all supply terminals
						shall be at the top of the switch enclosure.
EXCEPTION: Supply terminals are not required to be at
						  the top of the switch enclosure if barriers are installed to prevent persons
						  from accidentally contacting energized parts or dropping tools or fuses into
						  energized arts.
(b) Where
						fuses can be energized by backfeed, a sign shall be placed on the enclosure
						door reading, "WARNING--FUSES MAY BE ENERGIZED BY BACKFEED."
(Title 24, Part 3, Section
						  710-24(o).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No. 45).
2.
						  Editorial correction of subsection (c) filed 11-3-83 (Register 83, No.
						  45).
3. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No.
						  1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2837 - Ratings

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) The continuous
						current rating of a circuit breaker shall equal or exceed the maximum
						continuous current at the point of installation.
(b) The interrupting rating of a circuit
						breaker shall equal or exceed the maximum fault current the circuit breaker
						will be required to interrupt, including contributions from all connected
						sources of energy.
(c) The closing
						rating of a circuit breaker shall equal or exceed the maximum asymmetrical
						fault current into which the circuit breaker can be closed.
(d) The momentary rating of a circuit breaker
						shall equal or exceed the maximum asymmetrical fault current at the point of
						installation.
(e) The rated maximum
						voltage of a circuit breaker shall equal or exceed the maximum circuit voltage.
(Title 24, Part 3, Section
						  710-21(a)(5)-(a)(9).)
1.
						  Editorial correction including renumbering of former Article 70 to Article 21
						  filed 11-2-83 (Register 83, No. 45).
2. Removal of article 21
						  heading filed 4-1-2009; operative 4-1-2009. Submitted to OAL for printing only
						  pursuant to Labor Code section
						  142.3 (Register
						  2009, No. 14).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2838 - Grounding

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Metallic enclosures for circuit breakers shall be
						  grounded as required by Article 6.
(Title 24, Part 3, Section
						  3-710 -
						  21(a)(10).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2839 - General

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Circuit breakers shall comply with all the provisions
						  of American National Standard ANSI/IEEE C37.04--1979, Rating Structure for AC
						  High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis, which is
						  hereby incorporated by reference, and shall be permitted to be single pole or
						  multi-pole. They shall:
(a) Have an
						accessible mechanical or other approved means for manual tripping, independent
						of control power.
(b) Be release
						free (trip free).
(c) Have positive
						means to prevent unintended operation during inspection or
						maintenance.
(d) When operated
						manually while energized, open and close the main contacts independent of the
						speed of the manual operation.
(e)
						Be equipped with a mechanical position indicator to show the open or closed
						position of the main contacts.
(Title 24, Part 3, Section
						  710-21 (a) (4)
						  a-e.)
1.
						  Amendment filed 2-1-83; effective thirtieth day thereafter (Register 83, No.
						  6).
2. Editorial correction filed 11-2-83 (Register 83, No.
						  45).
3. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No.
						  1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2840 - Identification

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Circuit
						breakers shall have a permanent and legible nameplate including the following
						information: manufacturer's name or trademark, manufacturer's type or
						identification number, continuous current rating, interrupting rating in MVA or
						amperes, and maximum voltage rating.
(b) Modifications of a circuit breaker
						affecting its rating(s) shall be accompanied by an appropriate change in the
						identification data on the nameplate.
(Title 24, Part 3, Section
						  710-21(a)(4)
						  f.)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2841 - Isolation

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Means shall be
						provided to isolate each circuit breaker or circuit breaker installation from
						all sources of potential.
(b) The
						isolating means shall provide a visible gap in the electrical circuit adequate
						for the operating voltage.
(c)
						Isolating or disconnecting switches (with no interrupting rating) shall be
						mechanically interlocked with the circuit breaker or shall be provided with
						prominently displayed caution signs in accordance with Section
						2835 to prevent switching load
						current.
(d) The isolating means
						shall be permitted to be individually or group operated.
(Title 24, Part 3, Section
						  3-710 -
						  21(a)(11).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No. 45).
2.
						  Editorial correction of subsection (c) filed 11-3-83 (Register 83, No.
						  45).
3. Amendment of subsection (d) filed 12-10-87; operative 1-9-88
						  (Register 88, No. 1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2843 - General

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Automatic circuit reclosers shall comply with all the
						  provisions of American National Standard ANSI/IEEE C37.60-1981, Requirements
						  for Overhead, Pad Mounted, Dry Vault, and Submersible Automatic Circuit
						  Reclosers and Fault Interrupters for AC Systems, which is hereby incorporated
						  by reference, and with all the requirements of Article 21, except that the
						  provisions of ANSI/IEEE C37.04-1979 referenced in Article 21 do not apply to
						  circuit reclosers.
(Title 24, Part 3, Section
						  3-710 -
						  21(d)(9).)
1.
						  Amendment filed 2-1-83; effective thirtieth day thereafter (Register 83, No.
						  6).
2. Editorial correction including renumbering of former Article
						  71 to Article 22 filed 11-2-83 (Register 83, No. 45).
3. Amendment
						  filed 12-10-87; operative 1-9-88 (Register 88, No. 1).
4. Removal of
						  article 22 heading filed 4-1-2009; operative 4-1-2009. Submitted to OAL for
						  printing only pursuant to Labor Code section
						  142.3 (Register
						  2009, No. 14).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2845 - Power Fuses

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
						Use. Where fuses are used to protect conductors and equipment, a fuse shall be
						placed in each ungrounded conductor.
(1)
						Parallel (Multiple) Power Fuses. Two power fuses shall be permitted to be used
						in parallel (multiple) to protect the same load, provided:
(A) Both fuses have identical ratings,
						and
(B) Both fuses are installed in
						an identified common mounting with electrical connections that will divide the
						current equally.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2847 - Distribution Cutouts and Fuse Links-Expulsion Type

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Installation. The cutouts shall be so
						located that they may be readily and safely operated and refused, and so that
						the exhaust of the fuses will not endanger persons. Distribution cutouts shall
						not be used indoors, underground, or in metal enclosures.
(b) Interrupting Rating. The interrupting
						rating of distribution cutouts shall equal or exceed the maximum fault current
						which can occur at the fuse location. The available fault current at the fuse
						location shall include contributions from all connected sources of energy, such
						as the other lines, generators, large motors, etc.
(c) Voltage Rating. The maximum voltage
						rating of cutouts shall equal or exceed the maximum circuit voltage.
(d) Operation. Where fused cutouts are not
						suitable to interrupt the circuit manually while carrying full load, an
						approved means shall be installed to interrupt the entire load.
Unless the fused cutouts are interlocked with the
						  switch to prevent opening of the cutouts under load, a conspicuous sign shall
						  be placed at such cutouts reading, "Warning--Do Not Operate Under
						  Load."
(e) Identification.
						Distribution cutouts and fuse links shall have a permanent and legible
						nameplate or identification including the following information:
(1) Cutout Body, Door, or Fuse Tube.
						Manufacturer's type or designation, continuous current rating, maximum voltage
						rating, interrupting rating.
(2)
						Fuse Links. Continuous current rating, type identification following the
						continuous current rating.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2849 - Continuous Current Rating

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
The continuous current rating of oil-filled cutouts
						  shall equal or exceed the maximum continuous current at the point of
						  installation.
(Title 24, Part 3, Section
						  710-21(d)(1).
1.
						  Editorial correction including renumbering of former Article 74 to Article 25
						  filed 11-2-83 (Register 83, No. 45).
2. Amendment filed 12-10-87;
						  operative 1-9-88 (Register 88, No. 1).
3. Removal of article 25
						  heading filed 4-1-2009; operative 4-1-2009. Submitted to OAL for printing only
						  pursuant to Labor Code section
						  142.3 (Register
						  2009, No. 14).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2850 - Interrupting Rating

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
The interrupting rating of oil-filled cutouts shall
						  equal or exceed the maximum fault current available at the cutout location,
						  including contributions from all connected sources of energy, such as other
						  lines, generators, large motors, etc.
(Title 24, Part 3, Section
						  710-21(d)(2).)
1.
						  Editorial correction adding NOTE filed 11-2-83 (Register 83, No.
						  45).
2. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No.
						  1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 189243(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2851 - Voltage Rating

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
The maximum voltage rating of oil-filled cutouts shall
						  equal or exceed the maximum circuit voltage.
(Title 24, Part 3, Section
						  710-21
						  (d)(3).)
1.
						  Editorial correction adding NOTE filed 11-2-83 (Register 83, No.
						  45).
2. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No.
						  1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2852 - Fault Closing Rating

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Oil-filled cutouts shall have a fault closing rating
						  equal to or greater than the available fault current which can occur at the
						  cutout location, unless suitable interlocks or operating procedures preclude
						  the possibility of closing into a fault.
(Title 24, Part 3, Section
						  710-21(d)(4).)
1.
						  Editorial correction adding NOTE filed 11-2-83 (Register 83, No.
						  45).
2. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No.
						  1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2853 - Location

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
The cutouts shall be so located that they will be
						  readily and safely accessible for refusing, with the top of the cutout not more
						  than 5 feet above the floor or platform.
(Title 24, Part 3, Section
						  710-21(d)(7).)
1.
						  Editorial correction adding NOTE filed 11-2-83 (Register 83, No.
						  45).
2. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No.
						  1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2854 - Identification

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Oil-Filled Cutouts. Oil-filled cutouts shall have a
						  permanent and legible nameplate showing the rated continuous current, rated
						  maximum voltage, and rated interrupting current.
(Title 24, Part 3, Section
						  710-21(d)(5).)
(b) Fuses. Fuse links shall have a permanent
						and legible identification showing the rated continuous current.
(Title 24, Part 3, Section
						  710-21(d)(6).)
1.
						  Editorial correction adding NOTE filed 11-2-83 (Register 83, No.
						  45).
2. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No.
						  1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 20 - Interrupting and Isolating Devices › Section 2855 - Enclosure

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Suitable barriers or enclosures shall be provided to
						  prevent contact with non-shielded cables or energized parts of oil-filled
						  cutouts.
(Title 24, Part 3, Section
						  710-21(d)(8).)
1.
						  Editorial correction adding NOTE filed 11-2-83 (Register 83, No.
						  45).
2. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No.
						  1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2857 - Scope

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
This article covers assemblies of metal-enclosed power
						  switchgear and industrial control, including but not limited to switches,
						  interrupting devices and their control, metering, protection and regulating
						  equipment, when an integral part of the assembly, with associated
						  interconnections and supporting structures. This article also includes
						  metal-enclosed power switchgear assemblies which form a part of unit
						  substations, power centers, or similar equipment.
(Title 24, Part 3, Section
						  710-24(a).)
1.
						  Editorial correction including renumbering of former Article 75 to Article 26
						  filed 11-2-83 (Register 83, No. 45).
2. Amendment filed 12-10-87;
						  operative 1-9-88 (Register 88, No. 1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2858 - Metal-Enclosed Power Switchgear

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Metal-enclosed power switchgear
						assemblies shall be constructed in accordance with American National Standard
						ANSI/IEEE C.37.20-1969 and supplements to and including C37.20d-1978,
						Switchgear Assemblies Including Metal-Enclosed Bus, which is hereby
						incorporated by reference.
(b)
						Metal-enclosed industrial control assemblies shall be constructed in accordance
						with American National Standard ANSI/NEMA ICS 2-1978, Standards for Industrial
						Control Devices, Controllers and Assemblies, which is hereby incorporated by
						reference.
(Title 24, Part 3, Section
						  3-710 -
						  24(q).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No. 45).
2.
						  Editorial correction filed 11-3-83 (Register 83, No. 45).
3.
						  Amendment filed 12-10-87; operative 1-9-88 (Register 88, No.
						  1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2859 - Arrangement of Devices in Assemblies

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Arrangement of devices in assemblies shall be such that
						  individual components can safely perform their intended function without
						  adversely affecting the safe operation of other components in the
						  assembly.
(Title 24, Part 3, Section
						  710-24(b).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2860 - Guarding of High-Voltage Energized Parts Within a Compartment

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
When access for other than visual inspection is
						  required to a compartment which contains energized high-voltage parts, barriers
						  shall be provided (a) to prevent accidental contact with energized parts, and
						  (b) to prevent tools or other equipment from being dropped on energized
						  parts.
(Title 24, Part 3, Section
						  710-24(c).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No. 45).
2.
						  Amendment filed 12-10-87; operative 1-9-88 (Register 88, No.
						  1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2861 - Guarding of Low-Voltage Energized Parts Within a Compartment

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Energized bare parts mounted on doors shall be
						  effectively guarded or enclosed where the door must be opened for maintenance
						  of equipment or removal of drawout equipment.
(Title 24, Part 3, Section
						  710-24(d).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2862 - Clearance for Cable Conductors Entering Enclosure

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
The unobstructed space opposite terminals or opposite
						  conduits or other raceways entering a switchgear or control assembly shall be
						  adequate for the type of conductor and method of termination.
(Title 24, Part 3, Section
						  710-24(e).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2863 - Accessibility of Energized Parts

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Doors or removable panels which could
						provide non-qualified persons access to high-voltage energized parts shall be
						locked or secured by other approved means. When high-voltage metal-enclosed
						switchgear or control assemblies are accessible only to qualified persons,
						bolted-on or hinged and bolted cover plates shall be permitted to be
						used.
(b) Low-voltage control
						equipment, relays, motors, and the like (except instrument or control
						transformers which are connected to the high voltage) shall not be installed in
						compartments with exposed high-voltage energized parts or high-voltage wiring
						unless the access door or cover is interlocked with the high-voltage switch or
						disconnecting means to prevent the door or cover from being opened or removed
						unless the switch or disconnecting means is in the open position.
(c) Switchboards with exposed live parts.
						Switchboards that have any exposed live parts shall be located in permanently
						dry locations and shall be accessible only to qualified persons.
(d) Panelboard enclosures. Panelboards shall
						be mounted in cabinets, cutout boxes, or enclosures designed for the purpose
						and shall be dead front. However, panelboards other than the dead front
						externally-operable type are permitted where accessible only to qualified
						persons.
(e) Knife switches mounted
						in switchboards or panelboards. Exposed blades of knife switches mounted in
						switchboards or panelboards shall be dead when open.
1.
						  Editorial correction filed 11-2-83 (Register 83, No. 45).
2.
						  Amendment filed 12-10-87; operative 1-9-88 (Register 88, No. 1).
3.
						  Amendment of subsection (b), new subsection (c) and amendment of NOTE filed
						  4-1-2009; operative 4-1-2009. Submitted to OAL for printing only pursuant to
						  Labor Code section
						  142.3 (Register
						  2009, No. 14).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2864 - Grounding

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Frames of switchgear and control assemblies shall be
						  grounded in accordance with Article 6.
(Title 24, Part 3, Section
						  710-24(g).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2865 - Grounding of Devices

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Devices with metal cases and/or frames, such as
						  instruments, relays, meters, and instrument and control transformers, located
						  in or on switchgear or control, shall have the frame or case effectively
						  grounded.
(Title 24, Part 3, Section
						  710-24(h).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2866 - Door Stops and Cover Plates

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
External hinged doors or covers for outdoor equipment
						  shall be provided with stops to hold them in the open position. Cover plates
						  intended to be removed for inspection of energized parts or wiring shall be
						  locked or secured by other approved means and equipped with lifting handles and
						  shall not exceed 12 square feet in area or 60 pounds in weight. If they exceed
						  12 square feet in area or 60 pounds in weight, they shall be hinged and bolted
						  or locked.
(Title 24, Part 3, Section
						  710-24(i).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2867 - Gas Discharge from Interrupting Devices

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Gas discharged during operation of interrupting devices
						  shall be so directed as not to endanger personnel.
(Title 24, Part 3, Section
						  710-24(j).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2868 - Inspection Windows

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Windows intended for inspection of disconnecting
						  switches or other devices shall be of suitable transparent material.
(Title 24, Part 3, Section
						  710-24(k).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2869 - Location of Devices

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Control and instrument transfer switch handles or push
						  buttons shall be located in a readily accessible location at an elevation not
						  in excess of 78 inches.
EXCEPTION: NO. 1: Operating handles requiring more than
						  50 pounds of force shall not be higher than 66 inches in either the open or
						  closed position.
EXCEPTION: NO. 2: Operating handles for infrequently
						  operated devices, such as drawout fuses, fused potential or control
						  transformers and their primary disconnects, and bus transfer switches, need not
						  be readily accessible, provided they are otherwise safely operable and
						  serviceable from a portable platform.
(Title 24, Part 3, Section
						  710-24 (l ).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2870 - Interlocks-Interrupter Switches

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Interrupter switches equipped with stored energy
						  mechanisms shall have mechanical interlocks to prevent access to the switch
						  compartment unless the stored energy mechanism is in the discharged or blocked
						  position.
(Title 24, Part 3, Section
						  710-24(m).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 26 - Metal-Enclosed Power Switchgear and Industrial Control Assemblies › Section 2871 - Interlocks-Circuit Breakers

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
						Circuit breakers equipped with stored energy mechanisms shall be designed to
						prevent the release of the stored energy unless the mechanism has been fully
						charged.
(b) Mechanical interlocks
						shall be provided in the housing to prevent the complete withdrawal of the
						circuit breaker from the housing when the stored energy mechanism is in the
						fully charged position. In lieu of the above interlock, a suitable device may
						be provided which prevents the complete withdrawal of the circuit breaker until
						the closing function is blocked.
(Title 24, Part 3, Section
						  710-24(p).)
1.
						  Editorial correction filed 11-2-83 (Register 83, No.
						  45).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 27 - Transformers › Section 2873 - Scope

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
This article applies to the installation of all
						  transformers, including voltage and current regulators or regulating
						  transformers.
EXCEPTION: Control, instrument, and other transformers
						  which constitute an integral part of other apparatus (test equipment, X-ray,
						  diathermic, welders, rectifiers, mobile equipment, high frequency, or
						  electrostatic-coating apparatus, etc.) and conform to the requirements of such
						  other apparatus.
1.
						  Editorial correction including renumbering of former Article 76 to Article 27
						  filed 11-2-83 (Register 83, No. 45).
2. Amendment filed 12-10-87;
						  operative 1-9-88 (Register 88, No. 1).
3. Amendment of section and
						  NOTE filed 4-1-2009; operative 4-1-2009. Submitted to OAL for printing only
						  pursuant to Labor Code section
						  142.3 (Register
						  2009, No. 14).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 27 - Transformers › Section 2874 - General

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Ventilation.
						Adequate ventilation shall be provided to assure safe operating temperature of
						apparatus.
(b) Protection from
						Physical Damage. Transformers and attachments, such as conductors and
						externally mounted devices, shall be protected from physical damage by suitable
						barriers, guards, or location.
(c)
						Identification. Each transformer shall be identified by a permanent nameplate
						which includes the following information:
(1)
						The word(s) "Transformer," "Voltage Regulating Transformer," or "Voltage
						Regulator."
(2) Manufacturer's
						name, type, and serial designation.
(3) Rated KVA, phases, and
						frequency.
(4) Voltage ratings and
						tap voltages.
(5) Connection
						diagram.
(6) Polarity (single
						phase).
(7) Impedance.
(8) Rated temperature rise in degrees
						centigrade.
(9) Identification of
						insulating medium.
(10) Amount of
						insulating liquid (not required for sizes 167 KVA and smaller).
(11) Approximate total weight (not required
						for sizes 25 KVA and smaller).
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 27 - Transformers › Section 2875 - Requirements Applicable to Specific Types and Locations of Transformers

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Indoor
						Installations. Oil-insulated transformers shall not be installed indoors except
						in a vault constructed in accordance with Sections
						2805 and
						2806, or a separate building
						meeting the requirements of Section
						2807.
(b) High Fire Point Liquid-Insulated
						Transformers. Transformers insulated with a listed, less flammable liquid (high
						fire point) shall be permitted to be installed without a vault in a
						non-combustible occupancy area of non-combustible buildings, provided there is
						a liquid confinement area and the liquid is listed as having a fire point of
						not less than 300 degrees C. Such transformers installed indoors and rated over
						35,000 volts shall be installed in a vault.
(c) Dry-type, high fire point
						liquid-insulated, and askarel-insulated transformers installed indoors and
						rated over 35kV shall be in a vault.
(d) Protection from Flooding. Transformers
						and associated equipment subject to flooding shall be submersible.
(e) Protection Against Toxic Gases.
						Precautions shall be taken to prevent transformers from venting toxic or
						explosive gases into an inadequately ventilated space.
(f) Outdoor Installations. Transformers shall
						be permitted to be installed in outdoor enclosures meeting the requirements of
						Section 2812.1 or on roofs in accordance
						with Section
						2808. Transformers installed on
						poles or structures shall conform to Rule 58.3, General Order No. 95, 1981
						Edition, Rules for Overhead Electric Line Construction of the California Public
						Utilities Commission, which is hereby incorporated by reference. Transformers
						installed underground shall conform to Rule 34.2C, General Order No. 128, 1974
						Edition, Rules for Construction of Underground Electric Supply and
						Communications Systems of the California Public Utilities Commission which is
						hereby incorporated by reference
1.
						  Amendment filed 10-29-80; effective thirtieth day thereafter (Register 80, No.
						  44).
2. Amendment of subsection (b) filed 3-2-83; effective
						  thirtieth day thereafter (Register 83, No. 10).
3. Editorial
						  correction filed 11-2-83 (Register 83, No. 45).
4. Amendment filed
						  12-10-87; operative 1-9-88 (Register 88, No. 1).
5. Amendment of
						  section and NOTE filed 4-1-2009; operative 4-1-2009. Submitted to OAL for
						  printing only pursuant to Labor Code section
						  142.3 (Register
						  2009, No. 14).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 27 - Transformers › Section 2876 - Switching

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Means shall be provided for interrupting the load and
						  magnetizing currents and for isolation of each transformer, transformer bank,
						  or transformer installation. Switches used for these purposes shall be capable
						  of carrying the maximum load current at the point of installation and shall
						  meet the requirements of Article 20.
(a) Load Current. Means shall be installed on
						either the supply or load side to interrupt the maximum load current of each
						transformer, transformer bank, or transformer installation that will be
						switched as a unit. If the load break means is installed on the load side, it
						may consist of a main transformer switching device or a combination of two or
						more switching devices carrying the entire transformer load.
(b) Magnetizing Current. Means shall be
						installed to interrupt the magnetizing current of each voltage regulator,
						transformer, transformer bank, or transformer installation that will be
						switched as a unit. Interrupter switches that are not rated to interrupt the
						maximum load current at the point of installation shall be mechanically
						interlocked with the load break device required by subsection (a)
						above.
(c) Isolation. Means shall
						be installed to isolate from all sources of potential each transformer,
						transformer bank, or transformer installation that will be removed from service
						as a unit. Isolating or disconnecting switches that are not rated to interrupt
						the maximum load current at the point of installation shall be mechanically
						interlocked with the load break device required by subsection (a) above. If not
						rated to interrupt magnetizing current,they shall also be interlocked with any
						separate magnetizing current interrupting switch(es) that may be provided.
EXCEPTION: Where such interrupter switches or
						  disconnects are mounted out of doors, a permanent warning sign meeting the
						  requirements of Section
						  2835 (h) shall be
						  permitted to be provided in lieu of interlocking.
(d) Additional Requirements for Voltage
						Regulators. Proper switching sequence for regulators shall be assured by use of
						one of the following:
(1) Mechanically
						sequenced regulator bypass switch(es).
(2) Mechanical interlocks.
(3) Switching procedure prominently displayed
						at the switching location. (Title 24, Part 3, Section
						3-450 -
						51.)
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 5 - Electrical Safety Orders › Group 2 - High-Voltage Electrical Safety Orders › Article 27 - Transformers › Section 2877 - Overcurrent Protection

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Each transformer or bank of transformers operating as a
						  unit shall be protected against fault and overload currents by an overcurrent
						  device in each ungrounded conductor in the primary connection. The protective
						  device shall be permitted to be integral with or external to a
						  transformer.
EXCEPTION: No. 1: On grounded systems, a relay in each
						  of two phases, in conjunction with a ground relay, meets this
						  requirement.
EXCEPTION: No. 2: More than one transformer or
						  transformer bank shall be permitted to be protected by the same overcurrent
						  device, provided the protection for each transformer meets the requirements of
						  Section 2877 (b).
(a) Internal protective devices supplied
						integrally with a transformer shall be rated or adjusted in accordance with the
						specifications of the manufacturer.
(b) External protective means shall prevent
						the flow of current through the transformer in excess of the magnitudes and
						times in the following table:
Multiples of Transformer Self-cooled
								  Rating
Maximum Time in
								  Seconds
8 Times
300
								  Sec.
14.3 Times
5 Sec.
25 Times
2 Sec.
50 Times
0.5 Sec.
100 Times
0.125 Sec.
(Title 24, Part 3, Section
						  450-3.)
1.
						  Editorial correction filed 11-2-83 (Register 83, No. 45).
2.
						  Amendment filed 12-10-87; operative 1-9-88 (Register 88, No.
						  1).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.