ABYC MARINE ELECTRICAL CERTIFICATION EXAM
|ACTUAL QUESTIONS AND VERIFIED
ANSWERS|BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
How often (in inches) shall wire bundles be supported?
CORRECT ANSWER
Every 18 inches.
Question 2
What type of clamps are to be used for supporting wire bundles when routed over engines
and machinery?
CORRECT ANSWER
Insulated Metallic Hanger Clamps
Question 3
What tensile force must a 10 Gauge crimp connector withstand for one minute?
CORRECT ANSWER
40 lbs (E-11 Table XV)
Question 4
What is the max allowed unsupported cable length for battery cables?
CORRECT ANSWER
1
@THE STUDY VAULT
,36 inches
Question 5
T or F: Running AC and DC conductors together is allowed so long as the AC conductors are
sheathed.
CORRECT ANSWER
True
Question 6
The most common electrical circuit problem in marine applications is:
A. Short circuits
B. Too much continuity
C. Unwanted open
D. Inter circuit Short
CORRECT ANSWER
C. Unwanted open
Question 7
The primary by-product of excessive electrical resistance is:
A. Increased Amperage
B. Increased Voltage
C. Reduced Ambient Temperature
D. Heat
CORRECT ANSWER
2
@THE STUDY VAULT
,D. Heat
Question 8
One HP = how many watts?
CORRECT ANSWER
1 HP = 746 Watts
Question 9
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)
CORRECT ANSWER
D. TDR (time-domain reflectometer)
Question 10
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)?
CORRECT ANSWER
1 AWG
3
@THE STUDY VAULT
, Question 11
DC grounded conductors on new boats that are also equipped with AC systems should use
what color insulated wire?
CORRECT ANSWER
Yellow
Question 12
What is the smallest guage wire allowed for unsheathed wire runs through the boat?
CORRECT ANSWER
16 AWG
Question 13
T or F: Compared to deep cycle (house) batteries, cranking batteries will have thicker lead
plates to facilitate the higher, short-duration current draws.
CORRECT ANSWER
False. Start batteries have a greater number of thinner plates within each cell.
Question 14
Which type of battery generally recharges faster? Deep cycle or cranking?
CORRECT ANSWER
Cranking
Question 15
4
@THE STUDY VAULT
|ACTUAL QUESTIONS AND VERIFIED
ANSWERS|BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
How often (in inches) shall wire bundles be supported?
CORRECT ANSWER
Every 18 inches.
Question 2
What type of clamps are to be used for supporting wire bundles when routed over engines
and machinery?
CORRECT ANSWER
Insulated Metallic Hanger Clamps
Question 3
What tensile force must a 10 Gauge crimp connector withstand for one minute?
CORRECT ANSWER
40 lbs (E-11 Table XV)
Question 4
What is the max allowed unsupported cable length for battery cables?
CORRECT ANSWER
1
@THE STUDY VAULT
,36 inches
Question 5
T or F: Running AC and DC conductors together is allowed so long as the AC conductors are
sheathed.
CORRECT ANSWER
True
Question 6
The most common electrical circuit problem in marine applications is:
A. Short circuits
B. Too much continuity
C. Unwanted open
D. Inter circuit Short
CORRECT ANSWER
C. Unwanted open
Question 7
The primary by-product of excessive electrical resistance is:
A. Increased Amperage
B. Increased Voltage
C. Reduced Ambient Temperature
D. Heat
CORRECT ANSWER
2
@THE STUDY VAULT
,D. Heat
Question 8
One HP = how many watts?
CORRECT ANSWER
1 HP = 746 Watts
Question 9
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)
CORRECT ANSWER
D. TDR (time-domain reflectometer)
Question 10
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)?
CORRECT ANSWER
1 AWG
3
@THE STUDY VAULT
, Question 11
DC grounded conductors on new boats that are also equipped with AC systems should use
what color insulated wire?
CORRECT ANSWER
Yellow
Question 12
What is the smallest guage wire allowed for unsheathed wire runs through the boat?
CORRECT ANSWER
16 AWG
Question 13
T or F: Compared to deep cycle (house) batteries, cranking batteries will have thicker lead
plates to facilitate the higher, short-duration current draws.
CORRECT ANSWER
False. Start batteries have a greater number of thinner plates within each cell.
Question 14
Which type of battery generally recharges faster? Deep cycle or cranking?
CORRECT ANSWER
Cranking
Question 15
4
@THE STUDY VAULT
