ABYC Marine Electrical Certification Exam Review
2025-2026
1. The minimum amp circuit breaker that should A. 15
be used to protect a 120V water heater circuit
with a 1600-watt element would be rated at
amps.
2. When testing for excessive EMF emission near C. Gauss meter
a conductor or appliance, the tool of choice is a
(n):
3. What is the symbol for a variable resistor? variable resistor
4. The primary problem with using a series circuit A. Voltage drop through the circuit
to supply multiple loads is that: will be excessive
5. Based on this section (Ch. 2), the most common C. Unwanted open
electrical circuit problem in marine application
is:
6. The primary by-product of excessive electrical D. Heat
resistance is:
7. One horsepower equals . B. 746 watts
8. Excessive electrical resistance can be caused by D. Undersized wire, loose connec-
. tions, and corrosion
9. through circuits on a boat is perhaps D. Resistance to electrical current
the most common problem with electrical cir- flow
cuitry.
, ABYC Marine Electrical Certification Exam Review
2025-2026
10. When using Ohm's Law, if any two of the three A. , Multiplication or division
values are known, the thrid value can be calcu-
lated by .
11. If the voltage in a circuit is 12 volts and the C. 4
resistance is 3 Ohms, Ohm's Law can be used
to find that the rate of flow is amps.
12. If resistance decreases and the voltage remains B. Increase
constant in a circuit, then the amperage will
.
13. The unit of measure for power is the . A. Watt
14. A microwave oven with a wattage of 1.2 KW D. 10
(1,200 watts) and a 120 VAC will draw
amps.
15. Cranking motor (engine) circuits are not re- B. Overcurrent protection
quired to have .
16. In a circuit, there is only one path al- C. Series
lowed for electrical flow.
17. In a series circuit, the amperage (current) is A. The same everywhere it is mea-
. sured
18. In all circuits, voltage is lost as it travels through B. Voltage drop
the circuit, which is commonly referred to as
.
19. The most common type of circuit fault is a(n) C. Open circuit
.
, ABYC Marine Electrical Certification Exam Review
2025-2026
20. The is the most dangerous type of short D. Short circuit to ground
circuit.
21. Inter-circuit shorts are usually caused by C. An errant screw sticking through a
. look or wiring harness
22. One horsepower is equal to watts. A. 746
23. The primary by-product of excessive electrical B. Heat
resistance is .
24. Based on what this section has told you, the D. TDR= Time-Domain Reflectometer
tool of choice today for tracing shortened and
open circuits is the:
25. What material is recommended for clamping C. Metal
conductors over engines and moving machin-
ery according to ABYC?
26. According to ABYC, acceptable minimum clear- B. 9 in. (225 mm)
ance for routing wire near a dry exhaust section
is:
27. The maximum number of terminals allowed to D. 4
be attached to any one terminal stud based on
ABYC Standards is:
28. How much current should flow through the DC B. 0 amps
grounding conductor in a 25-amp DC motor
circuit?
29. Conductors of #10 AWG and larger shall be per- C. Where the ampacity of each in-
mitted to be connected in parallel dividual conductors is suflcient to
2025-2026
1. The minimum amp circuit breaker that should A. 15
be used to protect a 120V water heater circuit
with a 1600-watt element would be rated at
amps.
2. When testing for excessive EMF emission near C. Gauss meter
a conductor or appliance, the tool of choice is a
(n):
3. What is the symbol for a variable resistor? variable resistor
4. The primary problem with using a series circuit A. Voltage drop through the circuit
to supply multiple loads is that: will be excessive
5. Based on this section (Ch. 2), the most common C. Unwanted open
electrical circuit problem in marine application
is:
6. The primary by-product of excessive electrical D. Heat
resistance is:
7. One horsepower equals . B. 746 watts
8. Excessive electrical resistance can be caused by D. Undersized wire, loose connec-
. tions, and corrosion
9. through circuits on a boat is perhaps D. Resistance to electrical current
the most common problem with electrical cir- flow
cuitry.
, ABYC Marine Electrical Certification Exam Review
2025-2026
10. When using Ohm's Law, if any two of the three A. , Multiplication or division
values are known, the thrid value can be calcu-
lated by .
11. If the voltage in a circuit is 12 volts and the C. 4
resistance is 3 Ohms, Ohm's Law can be used
to find that the rate of flow is amps.
12. If resistance decreases and the voltage remains B. Increase
constant in a circuit, then the amperage will
.
13. The unit of measure for power is the . A. Watt
14. A microwave oven with a wattage of 1.2 KW D. 10
(1,200 watts) and a 120 VAC will draw
amps.
15. Cranking motor (engine) circuits are not re- B. Overcurrent protection
quired to have .
16. In a circuit, there is only one path al- C. Series
lowed for electrical flow.
17. In a series circuit, the amperage (current) is A. The same everywhere it is mea-
. sured
18. In all circuits, voltage is lost as it travels through B. Voltage drop
the circuit, which is commonly referred to as
.
19. The most common type of circuit fault is a(n) C. Open circuit
.
, ABYC Marine Electrical Certification Exam Review
2025-2026
20. The is the most dangerous type of short D. Short circuit to ground
circuit.
21. Inter-circuit shorts are usually caused by C. An errant screw sticking through a
. look or wiring harness
22. One horsepower is equal to watts. A. 746
23. The primary by-product of excessive electrical B. Heat
resistance is .
24. Based on what this section has told you, the D. TDR= Time-Domain Reflectometer
tool of choice today for tracing shortened and
open circuits is the:
25. What material is recommended for clamping C. Metal
conductors over engines and moving machin-
ery according to ABYC?
26. According to ABYC, acceptable minimum clear- B. 9 in. (225 mm)
ance for routing wire near a dry exhaust section
is:
27. The maximum number of terminals allowed to D. 4
be attached to any one terminal stud based on
ABYC Standards is:
28. How much current should flow through the DC B. 0 amps
grounding conductor in a 25-amp DC motor
circuit?
29. Conductors of #10 AWG and larger shall be per- C. Where the ampacity of each in-
mitted to be connected in parallel dividual conductors is suflcient to
