How often (in inches) shall wire bundles be
Every 18 inches.
supported?
What type of clamps are to be used for supporting
Insulated Metallic Hanger
wire bundles when routed over engines and
Clamps
machinery?
What tensile force must a 10 Gauge crimp connector
40 lbs (E-11 Table XV)
withstand for one minute?
What is the max allowed unsupported cable length for
36 inches
battery cables?
T or F: Running AC and DC conductors together is
True
allowed so long as the AC conductors are sheathed.
The most common electrical circuit problem in marine
applications is:
A. Short circuits
C. Unwanted open
B. Too much continuity
C. Unwanted open
D. Inter circuit Short
The primary by-product of excessive electrical
resistance is:
A. Increased Amperage
D. Heat
B. Increased Voltage
C. Reduced Ambient Temperature
D. Heat
What is the preferred tool for tracing shorted and
open circuits?
D. TDR (time-domain A. Ohm meter
reflectometer) B. Amp clamp
C. Volt meter
D. TDR (time-domain reflectometer)
A technician is installing a cable run from the batteries
to the main DC panel board on a boat as part of a refit.
The boat has a 12-volt system and the distance form
0 AWG
the panel to the batteries is 15 ft. The maximum current
draw from the panel is calculated at 90 amps. What
guage cable should be used (minimum)?
DC grounded conductors on new boats that are also
Yellow equipped with AC systems should use what color
insulated wire?
What is the smallest guage wire allowed for
16 AWG
unsheathed wire runs through the boat?
False. Start batteries have T or F: Compared to deep cycle (house) batteries,
a greater number of cranking batteries will have thicker lead plates to
thinner plates within each facilitate the higher, short-duration current draws.
cell.
Which type of battery generally recharges faster?
Cranking
Deep cycle or cranking?
Wire brush and backing What tool and common household staple are used to
soda. clean battery terminals?
Most of the sulfuric acid Why might a fully-discharged wet-cell type battery
has been absorbed into freeze?
the lead plates, leaving
mostly water in the
electrolyte.
Batteries must be secured to prevent movement of
1 inch, 90 lbs or 2x the more than ______ inches in any direction when a pulling
battery weight, for 1 minute force of _____ or _____, whichever is less, is applied
in each direction. through the center of gravity of the battery for how
long?
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