A self-contained emergency source of power and its associated equipment, located on or above the
freeboard deck, is to be provided if a fire or other casualty in any one space will make inoperative any
combination of the independent sources of normal electrical power required by 3-5-2/7.
When an emergency source of power is not fitted, the two independent sources of electrical power
required by 3-5-2/7 are to have their own systems, including power distribution and control systems,
completely independent of the system in the other space, such that a fire or other casualty in any one
space will not affect the power distribution in the other. In addition, the two independent sources of
electrical power are to comply with 3-5-2/9.3 through 3-5-2/9.9.
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