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Subchapter 5. Electrical Safety Orders
Group 1. Low-Voltage Electrical Safety Orders
Article 56. Motors, Motor Circuits and Controllers

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§2530.74. Disconnection.

(a) General. Control circuits shall be so arranged that they will be disconnected from all sources of supply when the disconnecting means is in the "Open" position. The disconnecting means shall be permitted to consist of two or more separate devices, one of which disconnects the motor and the controller from the source(s) of power supply for the motor, and the other(s), the control circuit(s) from its power supply. Where separate devices are used, they shall be located immediately adjacent to each other.

(Title 24, Part 3, Section 430-74(a) without exceptions.)

(b) Control Transformer in Controller. Where a transformer or other device is used to obtain a reduced voltage for the control circuit and is located in the controller, such transformer or other device shall be connected to the load side of the disconnecting means for the control circuit.

(Title 24, Part 3, Section 430-74(b).)

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


1. Editorial correction filed 11-2-83 (Register 83, No. 45).

2. Editorial correction of subsection (a) filed 11-3-83 (Register 83, No. 45).

3. Amendment of subsection (a) filed 8-27-86; effective thirtieth day thereafter (Register 86, No. 37).

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