46 C.F.R. § 129.395 Radio installations.
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A separate circuit, with overcurrent protection at the switchboard, must be provided for at least one radio installation. Additional radios, if installed, may be powered from a local lighting power source, such as the pilothouse lighting panel, provided each radio power source has a separate overcurrent protection device.
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PART 129—ELECTRICAL INSTALLATIONS
Subpart C—Power Sources and Distribution Systems
§ 129.395 Radio installations.