1|Page
ABYC MARINE ELECTRICAL CERTIFICATION
EXAM REVIEW 2026|CERTIFIED QUESTIONS
AND CORRECT ANSWERS
Every 18 inches. - correct-answer -How often (in inches) shall wire bundles be
supported?
Insulated Metallic Hanger Clamps - correct-answer -What type of clamps are to
be used for supporting wire bundles when routed over engines and machinery?
40 lbs (E-11 Table XV) - correct-answer -What tensile force must a 10 Gauge
crimp connector withstand for one minute?
36 inches - correct-answer -What is the max allowed unsupported cable length
for battery cables?
True - correct-answer -T or F: Running AC and DC conductors together is allowed
so long as the AC conductors are sheathed.
,2|Page
C. Unwanted open - correct-answer -The most common electrical circuit problem
in marine applications is:
A. Short circuits
B. Too much continuity
C. Unwanted open
D. Inter circuit Short
D. Heat - correct-answer -The primary by-product of excessive electrical
resistance is:
A. Increased Amperage
B. Increased Voltage
C. Reduced Ambient Temperature
D. Heat
1 HP = 746 Watts - correct-answer -One HP = how many watts?
D. TDR (time-domain reflectometer) - correct-answer -What is the preferred tool
for tracing shorted and open circuits?
A. Ohm meter
B. Amp clamp
C. Volt meter
D. TDR (time-domain reflectometer)
,3|Page
0 AWG - correct-answer -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 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)?
Yellow - correct-answer -DC grounded conductors on new boats that are also
equipped with AC systems should use what color insulated wire?
16 AWG - correct-answer -What is the smallest guage wire allowed for
unsheathed wire runs through the boat?
False. Start batteries have a greater number of thinner plates within each cell. -
correct-answer -T or F: Compared to deep cycle (house) batteries, cranking
batteries will have thicker lead plates to facilitate the higher, short-duration
current draws.
Cranking - correct-answer -Which type of battery generally recharges faster?
Deep cycle or cranking?
, 4|Page
Wire brush and backing soda. - correct-answer -What tool and common
household staple are used to clean battery terminals?
Most of the sulfuric acid has been absorbed into the lead plates, leaving mostly
water in the electrolyte. - correct-answer -Why might a fully-discharged wet-cell
type battery freeze?
1 inch, 90 lbs or 2x the battery weight, for 1 minute in each direction. - correct-
answer -Batteries must be secured to prevent movement of more than ______
inches in any direction when a pulling force of _____ or _____, whichever is less,
is applied through the center of gravity of the battery for how long?
True - correct-answer -T or F: it is ok to install batteries directly below an
uninterrupted fuel line?
Must be protected with dielectric insulating material - correct-answer -What
provision must be in place on any fuel line located within 12 inches of a battery
terminals?
80 F, 25 Amps, 10.5 Volts - correct-answer -Define: Battery reserve capacity = the
number of minutes that a new, fully charged battery at ______ degrees F can be
continuously discharged at ______ amps while maintaining _____ volts (for a 12 v
battery)
ABYC MARINE ELECTRICAL CERTIFICATION
EXAM REVIEW 2026|CERTIFIED QUESTIONS
AND CORRECT ANSWERS
Every 18 inches. - correct-answer -How often (in inches) shall wire bundles be
supported?
Insulated Metallic Hanger Clamps - correct-answer -What type of clamps are to
be used for supporting wire bundles when routed over engines and machinery?
40 lbs (E-11 Table XV) - correct-answer -What tensile force must a 10 Gauge
crimp connector withstand for one minute?
36 inches - correct-answer -What is the max allowed unsupported cable length
for battery cables?
True - correct-answer -T or F: Running AC and DC conductors together is allowed
so long as the AC conductors are sheathed.
,2|Page
C. Unwanted open - correct-answer -The most common electrical circuit problem
in marine applications is:
A. Short circuits
B. Too much continuity
C. Unwanted open
D. Inter circuit Short
D. Heat - correct-answer -The primary by-product of excessive electrical
resistance is:
A. Increased Amperage
B. Increased Voltage
C. Reduced Ambient Temperature
D. Heat
1 HP = 746 Watts - correct-answer -One HP = how many watts?
D. TDR (time-domain reflectometer) - correct-answer -What is the preferred tool
for tracing shorted and open circuits?
A. Ohm meter
B. Amp clamp
C. Volt meter
D. TDR (time-domain reflectometer)
,3|Page
0 AWG - correct-answer -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 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)?
Yellow - correct-answer -DC grounded conductors on new boats that are also
equipped with AC systems should use what color insulated wire?
16 AWG - correct-answer -What is the smallest guage wire allowed for
unsheathed wire runs through the boat?
False. Start batteries have a greater number of thinner plates within each cell. -
correct-answer -T or F: Compared to deep cycle (house) batteries, cranking
batteries will have thicker lead plates to facilitate the higher, short-duration
current draws.
Cranking - correct-answer -Which type of battery generally recharges faster?
Deep cycle or cranking?
, 4|Page
Wire brush and backing soda. - correct-answer -What tool and common
household staple are used to clean battery terminals?
Most of the sulfuric acid has been absorbed into the lead plates, leaving mostly
water in the electrolyte. - correct-answer -Why might a fully-discharged wet-cell
type battery freeze?
1 inch, 90 lbs or 2x the battery weight, for 1 minute in each direction. - correct-
answer -Batteries must be secured to prevent movement of more than ______
inches in any direction when a pulling force of _____ or _____, whichever is less,
is applied through the center of gravity of the battery for how long?
True - correct-answer -T or F: it is ok to install batteries directly below an
uninterrupted fuel line?
Must be protected with dielectric insulating material - correct-answer -What
provision must be in place on any fuel line located within 12 inches of a battery
terminals?
80 F, 25 Amps, 10.5 Volts - correct-answer -Define: Battery reserve capacity = the
number of minutes that a new, fully charged battery at ______ degrees F can be
continuously discharged at ______ amps while maintaining _____ volts (for a 12 v
battery)
