Go Back to Article 28 Table of Contents
| New query |
(a) Motors.
(1) Controls. Each motor shall be provided with a means for starting and stopping. The switching means shall meet the requirements of Sections 2833 and 2837. A properly coordinated and rated combination of current-limiting fuses and contactor will meet these requirements.
(Title 24, Part 3, Section 3-430-129(a).)
The controller disconnecting means for motor branch circuits over 600 volts, nominal, shall be permitted to be out of sight of the controller, if the controller is marked with a warning label giving the location and identification of the disconnecting means which is to be locked in the open position.
(Title 24, Part 3, Section 430-102.)
(2) Isolation. A means shall be installed to isolate each motor and its controller from all sources of potential. The isolating means shall meet requirements of Section 2835 (b).
(Title 24, Part 3, Section 3-430.129(b).)
(b) Generators.
(1) Each generator shall be provided with a load switching device meeting the requirements of Section 2833 or 2837. A properly coordinated and rated combination of current-limiting fuses and contactor will meet this requirement.
(2) Isolation. A means shall be installed to isolate each generator from all sources of potential. The isolating means shall meet the requirements of Section 2835 (b).
(3) Excitation Control. The generator excitation system shall include a means for safely interrupting excitation current.
(Title 24, Part 3, Section 3-445-9.)
(c) General Application--Motors.
(1) Several Motors Served by a Single Disconnecting Means. A single disconnecting means can serve a group of motors driving the several parts of a single machine, where the construction or use of the machine is such that it would be impractical to attempt to repair the motor, controller, or machine while any part of the machine is in operation.
(2) Undervoltage Protection. Means shall be provided to prevent automatic restarting of motors after undervoltage tripping if automatic starting would constitute a hazard to persons.
(3) Control Circuits. High-voltage portions of control circuits shall be protected against fault currents as provided in Section 2883.
(Title 24, Part 3, Section 3-430-129(c).)
NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.
HISTORY
1. Amendment of subsection (a) (1) filed 2-1-83; effective thirtieth day thereafter (Register 83, No. 6).
2. Editorial correction filed 11-2-83 (Register 83, No. 45).
3. Editorial correction of subsections (a) and (b) filed 11-3-83 (Register 83, No. 45).
4. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No. 1).
Go Back to Article 28 Table of Contents
| The above information is provided free of charge by the Department of Industrial Relations from its web site at www.dir.ca.gov. |