Power panels are supplied with two or three sources of powernormal, alternate, and emergency. These panels are equipped with circuit breakers or switches which permit the transfer from one source to another in the event of a casualty.

Regular electrical outlets are installed throughout the engineering spaces for use with small portable tools; multipurpose outlets are in-stalled in selected locations for use with portable submersible pumps and portable welding sets.

These outlets are located so that it is possible to use two portable submersible pumps in any water-tight compartment. Portable triple outlet ex-tension cables are provided to permit the concentration of all submersible pumps in one area. An adapter provided with these extension cables permits connection of the submersible pumps to the casualty power terminals. All this equipment is stowed in the damage control lockers.

Engineroom personnel should be trained in the emergency use and operation of submersible pumps as well as other damage control equipment. They should know the location of both normal and emergency power outlets in their spaces, and should understand the different methods used to supply electrical power for operating submersible pumps in the engineroom.

Engineroom personnel should also be familiar with sources of electrical power provided to the different power panels in an engineroom. During engineering casualty control drills and during actual emergencies, the Enginemen should be able to shift from one source of electrical supply to another.