ABYC Marine Electrical Certification NEWEST 2026
(GRADED A+ 100% DETAILED VERIFIED ANSWERS)
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 - 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. - 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 - 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 - 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" - 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 - 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 - 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 - 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 - 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 - ANSWER-c. only in one direction
Allowable amperage for AC conductors of 14 AWG, 105 degree C insulation, outside the engine
spaces, when 2 current carrying
conductors are bundled together is
a. 35 amps
b. 24.5 amps
c. 20.8 amps
d. none of the above - ANSWER-b. 24.5 amps
T or F: Pigtails less than 7 inches (175mm) in length are exempt from overcurrent protection
requirements. - ANSWER-True
Allowable amps less than 50 volts (not bundled). You have a cable that runs from a battery
to a bow thruster. All components
are in the forward cabin. The wire is good 105 C rated #0 AWG. How many amps can safely
pass through that cable?
a. 200
b. 242.3
c. 285
(GRADED A+ 100% DETAILED VERIFIED ANSWERS)
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 - 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. - 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 - 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 - 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" - 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 - 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 - 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 - 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 - 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 - ANSWER-c. only in one direction
Allowable amperage for AC conductors of 14 AWG, 105 degree C insulation, outside the engine
spaces, when 2 current carrying
conductors are bundled together is
a. 35 amps
b. 24.5 amps
c. 20.8 amps
d. none of the above - ANSWER-b. 24.5 amps
T or F: Pigtails less than 7 inches (175mm) in length are exempt from overcurrent protection
requirements. - ANSWER-True
Allowable amps less than 50 volts (not bundled). You have a cable that runs from a battery
to a bow thruster. All components
are in the forward cabin. The wire is good 105 C rated #0 AWG. How many amps can safely
pass through that cable?
a. 200
b. 242.3
c. 285
