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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 46 - Shipping |
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Chapter I - Coast Guard, Department of Homeland Security |
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SubChapter J - Electrical Engineering |
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Part 112 - Emergency Lighting and Power Systems |
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Subpart 112.05 - General |
§ 112.05-3 - Main-emergency bus-tie.
Latest version.
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§ 112.05-3 Main-emergency bus-tie.
Each bus-tie between a main switchboard and an emergency switchboard must:
(a) Disconnect automatically upon loss of potential at the emergency switchboard;
(b) Be arranged to prevent parallel operation of an emergency power source with any other source of electric power, except for interlock systems for momentary transfer of loads; and
(c) If arranged for feedback operation, open automatically upon overload of the emergency power source before the emergency power source is tripped off the line from the overload.