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Subchapter 5. Electrical Safety Orders
Group 2. High-Voltage Electrical Safety Orders
Article 3. General

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§2710. Examination, Installation, and Use of Equipment.

(a) Examination. Electric equipment shall be free from recognized hazards that are likely to cause death or serious physical harm to employees. Safety of equipment shall be determined using the following considerations:
(1) Suitability for installation and use in conformity with the provisions of these Orders;
NOTE to subsection (a)(1):
Suitability of equipment for an identified purpose may be evidenced by listing or labeling for that identified purpose.
(2) Mechanical strength and durability, including, for parts designed to enclose and protect other equipment, the adequacy of the protection thus provided;
(3) Wire-bending and connection space;
(4) Electrical insulation;
(5) Heating effects under all conditions of use;
(6) Arcing effects;
(7) Classification by type, size, voltage, current capacity, and specific use; and
(8) Other factors that contribute to the practical safeguarding of persons using or likely to come in contact with the equipment.
(b) Installation and use. Listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling.
(c) Insulation integrity. Completed wiring installations shall be free from short circuits and from grounds other than those required or permitted by these Safety Orders.
(d) Interrupting rating.
(1) Equipment intended to interrupt current at fault levels shall have an interrupting rating sufficient for the nominal circuit voltage and the current that is available at the line terminals of the equipment.
(2) Equipment intended to interrupt current at other than fault levels shall have an interrupting rating at nominal circuit voltage sufficient for the current that must be interrupted.
(e) Circuit impedance and other characteristics. The overcurrent protective devices, the total impedance, the component short-circuit current ratings, and other characteristics of the circuit to be protected shall be selected and coordinated to permit the circuit protective devices used to clear a fault to do so without the occurrence of extensive damage to the electrical components of the circuit. This fault shall be assumed to be either between two or more of the circuit conductors, or between any circuit conductor and the grounding conductor or enclosing metal raceway.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
1. Editorial correction including renumbering of former Article 52 to Article 3 filed 11-2-83 (Register 83, No. 45).
2. Amendment of section heading and repealer and new section 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).

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