1|Page
ABYC Marine Electrical Certification Exam
Review | Actual Questions With Verified
Solutions
True -correct-answer-T or F: Solid (non-stranded) conductors are not allowed for
AC wiring anywhere on a boat.
False. Auto-reset is not allowed. -correct-answer-T or F: magnetic transformers
with integrated secondary-side overcurrent protection and automatically resetting
thermal overload protection are ABYC compliant.
C. Continuity -correct-answer-To test a 120V AC element in a hot water heater, the
tech may run a _____ test.
A. Voltage
B. Capacitance
C. Continuity
D. Inductance
B. Inside an enclosure requiring the use of hand-tools to open -correct-answer-All
terminations and junctions for AC conductors must be installed:
,2|Page
A. in free air to allow for proper ventilation
B. Inside an enclosure requiring the use of hand-tools to open
C. In conduit
D. In snap-covered junction boxes
D. TDR -correct-answer-Wha is the best tool to use for locating short-circuits?
A. Megger
B. Amp Clamp
C. DVM
D. TDR
A. Cooler -correct-answer-High frequency transformers typically run _____ than
traditional magnetic transformers.
A. Cooler
B. Hotter
C. Faster
D. Slower
6 lbs for 1 minute (E-11.13.2.3) -correct-answer-What is the pull-test requirement
for DC plug/receptacles?
,3|Page
True -correct-answer-T or F: For AC wiring, the "hot" ungrounded conductor (i.e.,
not the insulation color) should be brass or copper colored and the "neutral"
grounded conductor should be light silver colored.
600 Watts for 15-amp circuit, 1000 Watts for 20-amp circuit (E-11.13.3.4) -correct-
answer-For a branch circuit supplying both receptacle loads and permanently
connected loads, what is the maximum recommended permanent load for 15-
amp circuit? For 20-amp circuit?
2 Watts / sq. ft. (E-11.8.2.2.1.1) -correct-answer-When calculating AC loads, what
is the recommended wattage per square foot of living area?
1500 Watts / 20 A circuit (E-11.8.2.2.1.2) -correct-answer-When calculating AC
loads for small galley appliances, how many watts should be used for each 20 amp
circuit?
True -correct-answer-T or F: when installing a remote solenoid for switching high-
current draws like windlass, bow-thruster, etc, a separate appropriately sized
overcurrent protection must be in place for both the low-current and high-current
wiring of the solenoid.
, 4|Page
As the motor heats up, winding resistance increases causing a corresponding
decrease in current draw. Fire hazard. Thermal protection device recommended in
motors! -correct-answer-Describe the reason why a locked-rotor motor may not
trip an overcurrent protection device.
seven hours (E-11.10.1.3.1) -correct-answer-For how long must a motor be able to
sustain a locked rotor condition without inducing a fire hazard?
True -correct-answer-T or F: if no standard rating OC protection device is available
which equals 100% of the allowable current for the conductor being protected,
the next larger rating, up to 150% of the conductor ampacity, may bee used -
unless the load is a motor.
On diesels, the oil pressure sender may be used to switch alternator on/off and
the trigger the tachometer. -correct-answer-Describe why a non-functional
tachometer and charging system on a diesel engine may be caused by a failed oil
pressure sending unit.
False -correct-answer-True or False: AC receptacles may be used for DC service,
provided they are properly labeled.
ABYC Marine Electrical Certification Exam
Review | Actual Questions With Verified
Solutions
True -correct-answer-T or F: Solid (non-stranded) conductors are not allowed for
AC wiring anywhere on a boat.
False. Auto-reset is not allowed. -correct-answer-T or F: magnetic transformers
with integrated secondary-side overcurrent protection and automatically resetting
thermal overload protection are ABYC compliant.
C. Continuity -correct-answer-To test a 120V AC element in a hot water heater, the
tech may run a _____ test.
A. Voltage
B. Capacitance
C. Continuity
D. Inductance
B. Inside an enclosure requiring the use of hand-tools to open -correct-answer-All
terminations and junctions for AC conductors must be installed:
,2|Page
A. in free air to allow for proper ventilation
B. Inside an enclosure requiring the use of hand-tools to open
C. In conduit
D. In snap-covered junction boxes
D. TDR -correct-answer-Wha is the best tool to use for locating short-circuits?
A. Megger
B. Amp Clamp
C. DVM
D. TDR
A. Cooler -correct-answer-High frequency transformers typically run _____ than
traditional magnetic transformers.
A. Cooler
B. Hotter
C. Faster
D. Slower
6 lbs for 1 minute (E-11.13.2.3) -correct-answer-What is the pull-test requirement
for DC plug/receptacles?
,3|Page
True -correct-answer-T or F: For AC wiring, the "hot" ungrounded conductor (i.e.,
not the insulation color) should be brass or copper colored and the "neutral"
grounded conductor should be light silver colored.
600 Watts for 15-amp circuit, 1000 Watts for 20-amp circuit (E-11.13.3.4) -correct-
answer-For a branch circuit supplying both receptacle loads and permanently
connected loads, what is the maximum recommended permanent load for 15-
amp circuit? For 20-amp circuit?
2 Watts / sq. ft. (E-11.8.2.2.1.1) -correct-answer-When calculating AC loads, what
is the recommended wattage per square foot of living area?
1500 Watts / 20 A circuit (E-11.8.2.2.1.2) -correct-answer-When calculating AC
loads for small galley appliances, how many watts should be used for each 20 amp
circuit?
True -correct-answer-T or F: when installing a remote solenoid for switching high-
current draws like windlass, bow-thruster, etc, a separate appropriately sized
overcurrent protection must be in place for both the low-current and high-current
wiring of the solenoid.
, 4|Page
As the motor heats up, winding resistance increases causing a corresponding
decrease in current draw. Fire hazard. Thermal protection device recommended in
motors! -correct-answer-Describe the reason why a locked-rotor motor may not
trip an overcurrent protection device.
seven hours (E-11.10.1.3.1) -correct-answer-For how long must a motor be able to
sustain a locked rotor condition without inducing a fire hazard?
True -correct-answer-T or F: if no standard rating OC protection device is available
which equals 100% of the allowable current for the conductor being protected,
the next larger rating, up to 150% of the conductor ampacity, may bee used -
unless the load is a motor.
On diesels, the oil pressure sender may be used to switch alternator on/off and
the trigger the tachometer. -correct-answer-Describe why a non-functional
tachometer and charging system on a diesel engine may be caused by a failed oil
pressure sending unit.
False -correct-answer-True or False: AC receptacles may be used for DC service,
provided they are properly labeled.
