46 C.F.R. § 111.103-3 Machinery space ventilation.
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(a) Each machinery space ventilation system must have two controls to stop the ventilation, one of which may be the supply circuit breaker. (b) The controls required in paragraph (a) of this section must be grouped so that they are operable from two positions, one of which must be outside the machinery space.
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PART 111—ELECTRIC SYSTEMS—GENERAL REQUIREMENTS
Subpart 111.103—Remote Stopping Systems
§ 111.103-3 Machinery space ventilation.
