ABYC MARINE ELECTRICAL CERTIFICATION EXAM REVIEW QUESTIONS
AND ANSWERS 2024/2025 UPDATED A COMPLETE SOLUTION ALL
ANSWERS 100% CORRECT DETAILED BEST GRADED TO SCORE A+
SUCCESS GUARANTEED
Voltage drop could be used to test for a bad starter cable. To test the cable a technician would
use the DVOM and check voltage at what two points?
a. At both ends of the cable
b. The battery terminals
c. The positive cable at starter and engine block (ground)
d. At the starter solenoid and engine block (ground) - CORRECT ANSWERS a. At both
ends of the cable
An ampere is a measurement of:
a. Power
b. Resistance
c. Potential to do work
d. Current Flow - CORRECT ANSWERS d. Current Flow
T or F: On an AC and DC combined panel that it affixed with screws, the energized AC parts on
the back of the panel must be covered. - CORRECT ANSWERS True.
What is the best way to prevent corrosion on a battery cable
a. Use WD 40
b. Use corrosion block
c. Heat shrink the entire battery post
d. Use pure copper lugs - CORRECT ANSWERS b. Use corrosion block
T or F: A shunt is a conductor of known resistance placed in series with a circuit to indicate
current flow by measurement of the voltage drop across this conductor. - CORRECT
ANSWERS True
,ABYC MARINE ELECTRICAL CERTIFICATION EXAM REVIEW QUESTIONS
AND ANSWERS 2024/2025 UPDATED A COMPLETE SOLUTION ALL
ANSWERS 100% CORRECT DETAILED BEST GRADED TO SCORE A+
SUCCESS GUARANTEED
A light circuit uses a 12 volt battery to power a bulb which uses 2.5 amps of power. How many
watts Is the light bulb?
a. 10 W
b. 20 W
c. 30 W
d. 40 W - CORRECT ANSWERS c. 30 W
A branch circuit for DC power can have overcurrent protection not to exceed _____ of
conductor ampacity.
a. 125%
b. 135%
c. 150%
d. Not required - CORRECT ANSWERS c. 150% (see 11.10.1.5.2)
When combining batteries in DC installation, which statement is NOT true.
a. two 12 volt batteries connected in series will give 24 volts.
b. two 12 volt batteries connected in parallel will give 12 volts
c. When connected in series, AmpHrs is increased.
d. When connected in series, AmpHrs stays the same. - CORRECT ANSWERS c. When
connected in series AmpHrs is increased.
On a vessel with 1 charging source ABYC requires sustaining DC loads for _____ minutes:
a. 30
b. 60
,ABYC MARINE ELECTRICAL CERTIFICATION EXAM REVIEW QUESTIONS
AND ANSWERS 2024/2025 UPDATED A COMPLETE SOLUTION ALL
ANSWERS 100% CORRECT DETAILED BEST GRADED TO SCORE A+
SUCCESS GUARANTEED
c. 90
d. 120 - CORRECT ANSWERS c. 90 minutes
A customer has a 600 Ah 'house' battery bank and wants to recharge with the highest
amperage (standard flooded batteries are being used). How high amperage is reasonable?
a. 200 amps
b. 150 amps
c. 100 amps
d. 50 amps - CORRECT ANSWERS b. 150 amps (25% of capacity)
While out cruising (away from the dock), batteries on a typical cruiser have what percentage of
charge?
a. 0 - 100%
b. 25 - 75%
c. 50 - 100%
d. 50 - 85% - CORRECT ANSWERS d. 50 - 85%
How much current should flow through the DC grounded conductor in a 15 amp DC lighting
circuit?
a. 15 amps
b. 0 amps
c. 10 amps
d. None of the above - CORRECT ANSWERS a. 15 amps
Two technicians are discussing increasing the number of traditional lead-acid golf cart batteries
on a customer's vessel from 4 to 8. Both technicians agree that batteries have to be accessible
, ABYC MARINE ELECTRICAL CERTIFICATION EXAM REVIEW QUESTIONS
AND ANSWERS 2024/2025 UPDATED A COMPLETE SOLUTION ALL
ANSWERS 100% CORRECT DETAILED BEST GRADED TO SCORE A+
SUCCESS GUARANTEED
for inspection and maintenance according to the NFPA. Technician A says that the batteries
must be in a vented box and secure. Technician B says that boxes are not necessary and a
sealed composite tray matching what the boat already has would be fine and looks better. Who
is correct?
a. Technician A
b. Technician B
c. Both A & B are correct
d. Neither - CORRECT ANSWERS b. Technician B
You're installing a 500 GPH bilge pump to be used as a shower pump (just to drain the shower
grey-water). It draws 8 amps, is 20' from the distribution panel, and operates at 12 volts. Using
the ABYC voltage drop table, what size wire is needed?
a. 14
b. 8
c. 10
d. 12 - CORRECT ANSWERS b. 8 AWG (using E-11 Table IX, 3% voltage drop, 40' total
distance, 10 Amps)
What is the closest distance an unshielded metallic fuel system component can be to a battery
terminal?
a. 8"
b. 12"
c. 16"
d. 24" - CORRECT ANSWERS b. 12" (see E-10.7.8)
When can a flat washer be used on a battery terminal?
a. When it has a resistance of less than .01 ohms
AND ANSWERS 2024/2025 UPDATED A COMPLETE SOLUTION ALL
ANSWERS 100% CORRECT DETAILED BEST GRADED TO SCORE A+
SUCCESS GUARANTEED
Voltage drop could be used to test for a bad starter cable. To test the cable a technician would
use the DVOM and check voltage at what two points?
a. At both ends of the cable
b. The battery terminals
c. The positive cable at starter and engine block (ground)
d. At the starter solenoid and engine block (ground) - CORRECT ANSWERS a. At both
ends of the cable
An ampere is a measurement of:
a. Power
b. Resistance
c. Potential to do work
d. Current Flow - CORRECT ANSWERS d. Current Flow
T or F: On an AC and DC combined panel that it affixed with screws, the energized AC parts on
the back of the panel must be covered. - CORRECT ANSWERS True.
What is the best way to prevent corrosion on a battery cable
a. Use WD 40
b. Use corrosion block
c. Heat shrink the entire battery post
d. Use pure copper lugs - CORRECT ANSWERS b. Use corrosion block
T or F: A shunt is a conductor of known resistance placed in series with a circuit to indicate
current flow by measurement of the voltage drop across this conductor. - CORRECT
ANSWERS True
,ABYC MARINE ELECTRICAL CERTIFICATION EXAM REVIEW QUESTIONS
AND ANSWERS 2024/2025 UPDATED A COMPLETE SOLUTION ALL
ANSWERS 100% CORRECT DETAILED BEST GRADED TO SCORE A+
SUCCESS GUARANTEED
A light circuit uses a 12 volt battery to power a bulb which uses 2.5 amps of power. How many
watts Is the light bulb?
a. 10 W
b. 20 W
c. 30 W
d. 40 W - CORRECT ANSWERS c. 30 W
A branch circuit for DC power can have overcurrent protection not to exceed _____ of
conductor ampacity.
a. 125%
b. 135%
c. 150%
d. Not required - CORRECT ANSWERS c. 150% (see 11.10.1.5.2)
When combining batteries in DC installation, which statement is NOT true.
a. two 12 volt batteries connected in series will give 24 volts.
b. two 12 volt batteries connected in parallel will give 12 volts
c. When connected in series, AmpHrs is increased.
d. When connected in series, AmpHrs stays the same. - CORRECT ANSWERS c. When
connected in series AmpHrs is increased.
On a vessel with 1 charging source ABYC requires sustaining DC loads for _____ minutes:
a. 30
b. 60
,ABYC MARINE ELECTRICAL CERTIFICATION EXAM REVIEW QUESTIONS
AND ANSWERS 2024/2025 UPDATED A COMPLETE SOLUTION ALL
ANSWERS 100% CORRECT DETAILED BEST GRADED TO SCORE A+
SUCCESS GUARANTEED
c. 90
d. 120 - CORRECT ANSWERS c. 90 minutes
A customer has a 600 Ah 'house' battery bank and wants to recharge with the highest
amperage (standard flooded batteries are being used). How high amperage is reasonable?
a. 200 amps
b. 150 amps
c. 100 amps
d. 50 amps - CORRECT ANSWERS b. 150 amps (25% of capacity)
While out cruising (away from the dock), batteries on a typical cruiser have what percentage of
charge?
a. 0 - 100%
b. 25 - 75%
c. 50 - 100%
d. 50 - 85% - CORRECT ANSWERS d. 50 - 85%
How much current should flow through the DC grounded conductor in a 15 amp DC lighting
circuit?
a. 15 amps
b. 0 amps
c. 10 amps
d. None of the above - CORRECT ANSWERS a. 15 amps
Two technicians are discussing increasing the number of traditional lead-acid golf cart batteries
on a customer's vessel from 4 to 8. Both technicians agree that batteries have to be accessible
, ABYC MARINE ELECTRICAL CERTIFICATION EXAM REVIEW QUESTIONS
AND ANSWERS 2024/2025 UPDATED A COMPLETE SOLUTION ALL
ANSWERS 100% CORRECT DETAILED BEST GRADED TO SCORE A+
SUCCESS GUARANTEED
for inspection and maintenance according to the NFPA. Technician A says that the batteries
must be in a vented box and secure. Technician B says that boxes are not necessary and a
sealed composite tray matching what the boat already has would be fine and looks better. Who
is correct?
a. Technician A
b. Technician B
c. Both A & B are correct
d. Neither - CORRECT ANSWERS b. Technician B
You're installing a 500 GPH bilge pump to be used as a shower pump (just to drain the shower
grey-water). It draws 8 amps, is 20' from the distribution panel, and operates at 12 volts. Using
the ABYC voltage drop table, what size wire is needed?
a. 14
b. 8
c. 10
d. 12 - CORRECT ANSWERS b. 8 AWG (using E-11 Table IX, 3% voltage drop, 40' total
distance, 10 Amps)
What is the closest distance an unshielded metallic fuel system component can be to a battery
terminal?
a. 8"
b. 12"
c. 16"
d. 24" - CORRECT ANSWERS b. 12" (see E-10.7.8)
When can a flat washer be used on a battery terminal?
a. When it has a resistance of less than .01 ohms
