ABYC Marine Electrical Certification Exam | Marine
Electrical Certification Exam | Questions and
Correct Answers | Graded A+ | Verified Answers
When using a high-resolution amp clamp on a shore power cord and activating AC
circuits one by one, the technician notes that the AC leakage current measured
increases with each appliance. This most likely indicates:
A. An open-circuit in the grounding conductor on the dock
B. Excessively high voltage delivered by the utility company
C. Excessive voltage drops in the AC power supply to the boat
D. A neutral-to-gound link at the boats AC panel board ---------CORRECT ANSWER--
---------------D. A neutral-to-gound link at the boats AC panel board
A system voltmeter shall be installed on the main panel board if the system is
permanently connected to:
A. Inverter
B. Generator
C. Motor
D. B & C above
E. All of the above ---------CORRECT ANSWER-----------------E. All of the above
Two techs are rewiring an old sailboat. Tech A says they should use all series
circuits to keep the wiring clean and simple. Tech B
,says series circuits should only serve a single load. Who is correct?
a . Tech A
b . Tech B
c. Both are right.
d. Neither are right. ---------CORRECT ANSWER-----------------d. Neither are right.
According to ABYC, maximum current carrying capacity of a 10 gauge wire, 105
degree C insulation, inside the engine room
when bundled with 2 other current carrying wires would be?
a. 60 amps
b. 51 amps
c. 42 amps
d. 35.7 amps ---------CORRECT ANSWER-----------------d. 35.7 amps
What is the expected voltage across a 'closed' switch that is operating properly
a. It should read current battery voltage
b. It can be up to 10% less than battery voltage
c. It should read '0' VDC
d. Not enough information provided ---------CORRECT ANSWER-----------------c. It
should read '0' VDC
,Sheathed ungrounded conductors connected directly to a battery must have
overcurrent protection devices located within
inches of the connection to the battery.
a. 7 "
b. 36" {slightly less than 1 meter)
c. 40 "
d. 72" ---------CORRECT ANSWER-----------------d. 72"
In a series circuit, the more resistive loads you add:
a. The total voltage will increase
b. The total current will increase
c. The total voltage will decrease
d. The total current will decrease ---------CORRECT ANSWER-----------------d. The
total current will decrease
The maximum number of terminals to be attached to any one terminal stud based
on ABYC Standard is:
a. 1
b. 2
c. 3
d. 4 ---------CORRECT ANSWER-----------------d. 4
, What does "trip free" circuit breaker mean?
a. The breaker is inexpensive
b. The breaker will have lots of nuisance trips
c. The breaker will trip out regardless of conditions
d. The breaker will only trip at 150% of its rated amperage ---------CORRECT
ANSWER-----------------c. The breaker will trip out regardless of conditions
maximum current carrying capacity for an flexible cord of 16 AWG with 2 current
carrying conductors inside the engine spaces is
a. 6 amps
b. 8 amps
c. 10 amps
d. 20 amps ---------CORRECT ANSWER-----------------b. 8 amps (E-11 Table XII
Conductor Ampacity - Flexible Cords)
A diode is a semiconductor that passes current
a. in any direction
b. only with high voltages
c. only in one direction
d. when used as a triggering device ---------CORRECT ANSWER-----------------c. only
in one direction
Electrical Certification Exam | Questions and
Correct Answers | Graded A+ | Verified Answers
When using a high-resolution amp clamp on a shore power cord and activating AC
circuits one by one, the technician notes that the AC leakage current measured
increases with each appliance. This most likely indicates:
A. An open-circuit in the grounding conductor on the dock
B. Excessively high voltage delivered by the utility company
C. Excessive voltage drops in the AC power supply to the boat
D. A neutral-to-gound link at the boats AC panel board ---------CORRECT ANSWER--
---------------D. A neutral-to-gound link at the boats AC panel board
A system voltmeter shall be installed on the main panel board if the system is
permanently connected to:
A. Inverter
B. Generator
C. Motor
D. B & C above
E. All of the above ---------CORRECT ANSWER-----------------E. All of the above
Two techs are rewiring an old sailboat. Tech A says they should use all series
circuits to keep the wiring clean and simple. Tech B
,says series circuits should only serve a single load. Who is correct?
a . Tech A
b . Tech B
c. Both are right.
d. Neither are right. ---------CORRECT ANSWER-----------------d. Neither are right.
According to ABYC, maximum current carrying capacity of a 10 gauge wire, 105
degree C insulation, inside the engine room
when bundled with 2 other current carrying wires would be?
a. 60 amps
b. 51 amps
c. 42 amps
d. 35.7 amps ---------CORRECT ANSWER-----------------d. 35.7 amps
What is the expected voltage across a 'closed' switch that is operating properly
a. It should read current battery voltage
b. It can be up to 10% less than battery voltage
c. It should read '0' VDC
d. Not enough information provided ---------CORRECT ANSWER-----------------c. It
should read '0' VDC
,Sheathed ungrounded conductors connected directly to a battery must have
overcurrent protection devices located within
inches of the connection to the battery.
a. 7 "
b. 36" {slightly less than 1 meter)
c. 40 "
d. 72" ---------CORRECT ANSWER-----------------d. 72"
In a series circuit, the more resistive loads you add:
a. The total voltage will increase
b. The total current will increase
c. The total voltage will decrease
d. The total current will decrease ---------CORRECT ANSWER-----------------d. The
total current will decrease
The maximum number of terminals to be attached to any one terminal stud based
on ABYC Standard is:
a. 1
b. 2
c. 3
d. 4 ---------CORRECT ANSWER-----------------d. 4
, What does "trip free" circuit breaker mean?
a. The breaker is inexpensive
b. The breaker will have lots of nuisance trips
c. The breaker will trip out regardless of conditions
d. The breaker will only trip at 150% of its rated amperage ---------CORRECT
ANSWER-----------------c. The breaker will trip out regardless of conditions
maximum current carrying capacity for an flexible cord of 16 AWG with 2 current
carrying conductors inside the engine spaces is
a. 6 amps
b. 8 amps
c. 10 amps
d. 20 amps ---------CORRECT ANSWER-----------------b. 8 amps (E-11 Table XII
Conductor Ampacity - Flexible Cords)
A diode is a semiconductor that passes current
a. in any direction
b. only with high voltages
c. only in one direction
d. when used as a triggering device ---------CORRECT ANSWER-----------------c. only
in one direction
