ABYC Electrical, ABYC ELECTRICAL
STUDY 1 Exam 2026 Questions and
Answers
The minimum amp circuit breaker that should be used to protect a 120V water
heater circuit with a 1600-watt element would be rated at ___________ amps. -
Correct answer-A. 15
When testing for excessive EMF emission near a conductor or appliance, the tool
of choice is a (n): - Correct answer-C. Gauss meter
What is the symbol for a variable resistor? - Correct answer-variable resistor
The primary problem with using a series circuit to supply multiple loads is that: -
Correct answer-A. Voltage drop through the circuit will be excessive
Based on this section (Ch. 2), the most common electrical circuit problem in
marine application is: - Correct answer-C. Unwanted open
The primary by-product of excessive electrical resistance is: - Correct answer-D.
Heat
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,One horsepower equals ______________. - Correct answer-B. 746 watts
Excessive electrical resistance can be caused by ____________. - Correct answer-
D. Undersized wire, loose connections, and corrosion
_________ through circuits on a boat is perhaps the most common problem with
electrical circuitry. - Correct answer-D. Resistance to electrical current flow
When using Ohm's Law, if any two of the three values are known, the thrid value
can be calculated by ________. - Correct answer-A., Multiplication or division
If the voltage in a circuit is 12 volts and the resistance is 3 Ohms, Ohm's Law can
be used to find that the rate of flow is _______ amps. - Correct answer-C. 4
If resistance decreases and the voltage remains constant in a circuit, then the
amperage will _________. - Correct answer-B. Increase
The unit of measure for power is the __________. - Correct answer-A. Watt
A microwave oven with a wattage of 1.2 KW (1,200 watts) and a 120 VAC will
draw __________ amps. - Correct answer-D. 10
Cranking motor (engine) circuits are not required to have ___________. - Correct
answer-B. Overcurrent protection
In a _______ circuit, there is only one path allowed for electrical flow. - Correct
answer-C. Series
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,In a series circuit, the amperage (current) is ______________. - Correct answer-A.
The same everywhere it is measured
In all circuits, voltage is lost as it travels through the circuit, which is commonly
referred to as ___________. - Correct answer-B. Voltage drop
The most common type of circuit fault is a(n) ______. - Correct answer-C. Open
circuit
The ______ is the most dangerous type of short circuit. - Correct answer-D. Short
circuit to ground
Inter-circuit shorts are usually caused by __________. - Correct answer-C. An
errant screw sticking through a look or wiring harness
One horsepower is equal to __________ watts. - Correct answer-A. 746
The primary by-product of excessive electrical resistance is __________. - Correct
answer-B. Heat
Based on what this section has told you, the tool of choice today for tracing
shortened and open circuits is the: - Correct answer-D. TDR= Time-Domain
Reflectometer
What material is recommended for clamping conductors over engines and moving
machinery according to ABYC? - Correct answer-C. Metal
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, According to ABYC, acceptable minimum clearance for routing wire near a dry
exhaust section is: - Correct answer-B. 9 in. (225 mm)
The maximum number of terminals allowed to be attached to any one terminal stud
based on ABYC Standards is: - Correct answer-D. 4
How much current should flow through the DC grounding conductor in a 25-amp
DC motor circuit? - Correct answer-B. 0 amps
Conductors of #10 AWG and larger shall be permitted to be connected in parallel
_______ - Correct answer-C. Where the ampacity of each individual conductors is
sufficient to carry the entire load current shared by the parallel conductors.
A technician is installing the cable run from the batteries to the main DC
panelboard on a boat as part of a refit. the boat has a 12-volt system, and the
distance from the panel to batteries is 15 ft (approximately 5 m). The maximum
current draw from the panel is calculated at 90 amps. What gauge cable should be
used at a minimum to maintain Standards compliance? - Correct answer-A. 0 AWG
DC grounded conductors on new boats that are also equipped with AC systems
should use what color insulation? - Correct answer-D. Yellow
The maximum spacing for cable run support based on ABYC is: - Correct answer-
D. 18 in. (450 mm)
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
STUDY 1 Exam 2026 Questions and
Answers
The minimum amp circuit breaker that should be used to protect a 120V water
heater circuit with a 1600-watt element would be rated at ___________ amps. -
Correct answer-A. 15
When testing for excessive EMF emission near a conductor or appliance, the tool
of choice is a (n): - Correct answer-C. Gauss meter
What is the symbol for a variable resistor? - Correct answer-variable resistor
The primary problem with using a series circuit to supply multiple loads is that: -
Correct answer-A. Voltage drop through the circuit will be excessive
Based on this section (Ch. 2), the most common electrical circuit problem in
marine application is: - Correct answer-C. Unwanted open
The primary by-product of excessive electrical resistance is: - Correct answer-D.
Heat
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,One horsepower equals ______________. - Correct answer-B. 746 watts
Excessive electrical resistance can be caused by ____________. - Correct answer-
D. Undersized wire, loose connections, and corrosion
_________ through circuits on a boat is perhaps the most common problem with
electrical circuitry. - Correct answer-D. Resistance to electrical current flow
When using Ohm's Law, if any two of the three values are known, the thrid value
can be calculated by ________. - Correct answer-A., Multiplication or division
If the voltage in a circuit is 12 volts and the resistance is 3 Ohms, Ohm's Law can
be used to find that the rate of flow is _______ amps. - Correct answer-C. 4
If resistance decreases and the voltage remains constant in a circuit, then the
amperage will _________. - Correct answer-B. Increase
The unit of measure for power is the __________. - Correct answer-A. Watt
A microwave oven with a wattage of 1.2 KW (1,200 watts) and a 120 VAC will
draw __________ amps. - Correct answer-D. 10
Cranking motor (engine) circuits are not required to have ___________. - Correct
answer-B. Overcurrent protection
In a _______ circuit, there is only one path allowed for electrical flow. - Correct
answer-C. Series
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,In a series circuit, the amperage (current) is ______________. - Correct answer-A.
The same everywhere it is measured
In all circuits, voltage is lost as it travels through the circuit, which is commonly
referred to as ___________. - Correct answer-B. Voltage drop
The most common type of circuit fault is a(n) ______. - Correct answer-C. Open
circuit
The ______ is the most dangerous type of short circuit. - Correct answer-D. Short
circuit to ground
Inter-circuit shorts are usually caused by __________. - Correct answer-C. An
errant screw sticking through a look or wiring harness
One horsepower is equal to __________ watts. - Correct answer-A. 746
The primary by-product of excessive electrical resistance is __________. - Correct
answer-B. Heat
Based on what this section has told you, the tool of choice today for tracing
shortened and open circuits is the: - Correct answer-D. TDR= Time-Domain
Reflectometer
What material is recommended for clamping conductors over engines and moving
machinery according to ABYC? - Correct answer-C. Metal
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, According to ABYC, acceptable minimum clearance for routing wire near a dry
exhaust section is: - Correct answer-B. 9 in. (225 mm)
The maximum number of terminals allowed to be attached to any one terminal stud
based on ABYC Standards is: - Correct answer-D. 4
How much current should flow through the DC grounding conductor in a 25-amp
DC motor circuit? - Correct answer-B. 0 amps
Conductors of #10 AWG and larger shall be permitted to be connected in parallel
_______ - Correct answer-C. Where the ampacity of each individual conductors is
sufficient to carry the entire load current shared by the parallel conductors.
A technician is installing the cable run from the batteries to the main DC
panelboard on a boat as part of a refit. the boat has a 12-volt system, and the
distance from the panel to batteries is 15 ft (approximately 5 m). The maximum
current draw from the panel is calculated at 90 amps. What gauge cable should be
used at a minimum to maintain Standards compliance? - Correct answer-A. 0 AWG
DC grounded conductors on new boats that are also equipped with AC systems
should use what color insulation? - Correct answer-D. Yellow
The maximum spacing for cable run support based on ABYC is: - Correct answer-
D. 18 in. (450 mm)
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
