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Combustible Materials. Where a crane or hoist operates over readily combustible material, the resistors shall be placed in a well ventilated cabinet composed of noncombustible material so constructed that it will not emit flames or molten metal.
EXCEPTION: Resistors shall be permitted to be located in a cage or cab constructed of noncombustible material which encloses the sides of the cage or cab from the floor to a point at least 6 inches above the top of the resistors.
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. Amendment filed 8-27-86; effective thirtieth day thereafter (Register 86, No. 37).