46 C.F.R. § 111.60-7   Demand loads.


Title 46 - Shipping


Title 46: Shipping
PART 111—ELECTRIC SYSTEMS—GENERAL REQUIREMENTS
Subpart 111.60—Wiring Materials and Methods

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§ 111.60-7   Demand loads.

Generator, feeder, and bus-tie cables must be selected on the basis of a computed load of not less than the demand load given in Table 111.60–7.

                       Table 111.60-7_Demand Loads------------------------------------------------------------------------            Type of circuit                        Demand load------------------------------------------------------------------------Generator cables......................  115 percent of continuous                                         generator rating.Switchboard bus-tie, except ship's      75 percent of generating service to emergency switchboard bus-   capacity of the larger tie.                                    switchboard.Emergency switchboard bus-tie.........  115 percent of continuous rating                                         of emergency generator.Motor feeders.........................  Article 430, National Electrical                                         Code.Galley equipment feeder...............  100 percent of either the first                                         50 KW or one-half the connected                                         load, whichever is the larger,                                         plus 65 percent of the                                         remaining connected load, plus                                         50 percent of the rating of the                                         spare switches or circuit                                         breakers on the distribution                                         panel.Lighting feeder.......................  100 percent of the connected                                         load plus the average active                                         circuit load for the spare                                         switches or circuit breakers on                                         the distribution panels.Grounded neutral of a dual voltage      100 percent of the capacity of feeder.                                 the ungrounded conductors when                                         grounded neutral is not                                         protected by a circuit breaker                                         overcurrent trip, or not less                                         than 50 percent of the capacity                                         of the ungrounded conductors                                         when the grounded neutral is                                         protected by a circuit breaker                                         overcurrent trip or overcurrent                                         alarm.------------------------------------------------------------------------

[CGD 74–125A, 47 FR 15236, Apr. 8, 1982, as amended by USCG–2004–18884, 69 FR 58348, Sept. 30, 2004]

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