ABYC Marine Electrical Certification
Exam 2026 Questions and 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.
C. Unwanted open - Correct answer-The most common electrical circuit problem
in marine applications is:
A. Short circuits
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,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)
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,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?
Wire brush and backing soda. - Correct answer-What tool and common household
staple are used to clean battery terminals?
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, 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)
90 minutes - Correct answer-According to ABYC, what is the minimum battery
reserve capacity?
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
Exam 2026 Questions and 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.
C. Unwanted open - Correct answer-The most common electrical circuit problem
in marine applications is:
A. Short circuits
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,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)
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,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?
Wire brush and backing soda. - Correct answer-What tool and common household
staple are used to clean battery terminals?
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, 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)
90 minutes - Correct answer-According to ABYC, what is the minimum battery
reserve capacity?
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
