Each motor must be rated for continuous duty, except a motor for an application listed in Table 111.25-15 or a similar duty must meet the minimum short-time rating stated in the table.
Table 111.25-15------------------------------------------------------------------------
Minimum short-time rating of
Application of motor motor, in hours------------------------------------------------------------------------Deck winch and direct acting capstan...... Half.Deck winch with hydraulic transmission.... Continuous at no load
followed by \1/2\ hr. at
full load.Direct acting windlass.................... One fourth.Windlass with hydraulic transmission...... Half hour idle pump
operation, followed by \1/
4\ hr. full load operation.Steering gear, direct acting.............. One.Steering gear, indirect drive............. Continuous operation at 15
pct. load followed by 1 hr.
at full load.Watertight door operators................. \1/12\.Boat winches.............................. \1/12\.------------------------------------------------------------------------
Subpart 111.30_Switchboards