ABYC Marine Electrical Certification Exam Review
Latest 2025/2026 Questions and Correct Answers
Graded A+|Assured Success
AIC = 5000 Amps (E-11 table IV-A) - CORRECT ANSWER-What is the minimum
ampere interrupting capacity (AIC) for main overcurrent protection on a battery
bank rated at 12 V, 1500 CCA?
AIC = 2X mnfg's short-circuit rating or 100X nominal Ahr rating. - CORRECT
ANSWER-What is the minimum ampere interrupting capacity (AIC) for main
overcurrent protection on a battery bank rated at more than 2200 CCA or more
than 500 Ahr?
,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
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)
, 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?
Latest 2025/2026 Questions and Correct Answers
Graded A+|Assured Success
AIC = 5000 Amps (E-11 table IV-A) - CORRECT ANSWER-What is the minimum
ampere interrupting capacity (AIC) for main overcurrent protection on a battery
bank rated at 12 V, 1500 CCA?
AIC = 2X mnfg's short-circuit rating or 100X nominal Ahr rating. - CORRECT
ANSWER-What is the minimum ampere interrupting capacity (AIC) for main
overcurrent protection on a battery bank rated at more than 2200 CCA or more
than 500 Ahr?
,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
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)
, 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?
