Figure 2-18.--Casualty power cable--old method of serving.
equipment if the installed distribution system is
Cable Repairs
damaged.
A cable repair is the restoration of the cable armor
Portable casualty power cables are type
or the outermost sheath or both. Cable repair may be
LSTHOF-42. They are capable of carrying 93 A at 40C
made by ship's force. However, cable repair should be
and 86 A at 50C indefinitely. They have a casualty
made according to DOD-STD-2003(NAVY), unless
power application of 200 A. Metal tags installed on the
standard methods cannot be applied.
cables designate their proper lengths and locations.
On older ships, the portable cable ends are marked
Cable Splicing
to identify the A, B, and C phases visually or by touch
when illumination is insufficient for visual
A cable splice is the restoration on any part of a cable
identification. Phase A is color-coded black and has one
that cannot be restored by a cable repair. Cable splices
serving on the conductor end; phase B is color-coded
should be made according to methods described in
white and has two servings; and phase C is red with three
DOD-STD-2003(NAVY), unless standard methods
servings (fig. 2-18).
cannot be applied. Cable splices should not be made by
ship's force except in an emergency. When such splices
The insulation of the individual conductors is
are made, the y should be replaced at the earliest
exposed to shipboard ambient temperatures and perhaps
opportunity by a continuous length of cable or by an
oil or oil fumes and accidental damage. After an
approved splice installed by a repair activity.
exposure period of 5 years or more, the conductor
insulation may lose elasticity and crack when bent while
being handled. This could happen when the casualty
CASUALTY POWER CABLE
power system is rigged for emergency use. The exposed
ends of the individual conductors of the casualty power
Suitable lengths of portable casualty power cables
cables should be inspected following PMS. The best
are stowed close to the locations where they may be
method for determining acceptable insulation is to
needed for making temporary connections. They are of
sharply bend all conductors by hand. If no cracks
suitable lengths (normally no more than 75 feet) and
develop, the insulation is satisfactory. Refer to figures
distributed throughout the ship according to the Ship
2-19 and 2-20 as you read the following steps you should
lnformation Book. These portable cables are used to
use to repair a defective cable:
connect one fixed terminal to another to energize vital
2-20
