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ABYC ELECTRICAL 2025 EXAM BRAND
NEW ACTUAL EXAM WITH ANSWERS.
1. Tech A says that generator AC conductors must be tightly
secured to avoid vibration and movement from the generator
set. Tech B says that the generators AC wiring must be
protected from chafing and strain. Who is right?
A. Tech A
B. Tech B
C. Both Techs
D. Neither Tech - correct answer -C. Both
2. The AC output conductors of an AC generator, tha is not self
liming, shall be provided with over current protection within:
A. 7"
B. 40" if properly sheathed
C. 72"
D. A and B - correct answer -D. A and B
3. Technician A says that when the sensor wire from the oil
pressure gauge is grounded the gauge needle moves to the
right, showing full pressure. THe most likely problem is:
A. Low oil pressure
B. A shorted wire
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C. A bad sensing unit
D. A bad gauge - correct answer -C. A bad sensing unit
4. To test the voltage drop to the cranking motor, connect the volt
meter leads:
A. In series with the battery
B. To the neg battery post and the negative cable termination
at the engine while cranking the engine
C. To the positive battery post and the positive cable
termination at the engine while cranking the engine
D. Both B and C - correct answer -D. Both B and C
5. According to ABYC, the minimum conductor size of the primary
conductor in a lightning protection system is:
A. 8 AWG
B. 6 AWG
C. 4 AWG
D. 0000 AWG - correct answer -C. 4 AWG
6. A customer complains that certain electronic components (fed
from a panel board) malfunction during engine cranking.
Probable causes are all of the following except:
A. Undersized conductor feeding the panelboard
B. Faulty battery switch
C. Undersized cranking battery
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D. Undersized DC grounding conductor - correct answer -B.
Faulty battery switch
7. Tech A says that DC negative bus bars that are mounted to a
metal panelboard must be insulated form the metal enclosure.
Tech B says that they do not need to be insulated, Which Tech
is correct?
A. Tech A
B. Tech B
C. Both techs
D. Neither Tech - correct answer -A Tech A
8. The minimum spacing for attaching current carrying conductors
to a fuel line is:
A. 6"
B. 12"
C. 18"
D. None of the above - correct answer -D. None of the above
9. What is the minimum conductor size needed in a 25 amp AC
circuit if four current carrying conductors are bundled together
running inside an engine space using 105 deg wiring
insulation?
A. 4 AWG
B. 6 AWG
ABYC ELECTRICAL 2025 EXAM BRAND
NEW ACTUAL EXAM WITH ANSWERS.
1. Tech A says that generator AC conductors must be tightly
secured to avoid vibration and movement from the generator
set. Tech B says that the generators AC wiring must be
protected from chafing and strain. Who is right?
A. Tech A
B. Tech B
C. Both Techs
D. Neither Tech - correct answer -C. Both
2. The AC output conductors of an AC generator, tha is not self
liming, shall be provided with over current protection within:
A. 7"
B. 40" if properly sheathed
C. 72"
D. A and B - correct answer -D. A and B
3. Technician A says that when the sensor wire from the oil
pressure gauge is grounded the gauge needle moves to the
right, showing full pressure. THe most likely problem is:
A. Low oil pressure
B. A shorted wire
, Page | 2
C. A bad sensing unit
D. A bad gauge - correct answer -C. A bad sensing unit
4. To test the voltage drop to the cranking motor, connect the volt
meter leads:
A. In series with the battery
B. To the neg battery post and the negative cable termination
at the engine while cranking the engine
C. To the positive battery post and the positive cable
termination at the engine while cranking the engine
D. Both B and C - correct answer -D. Both B and C
5. According to ABYC, the minimum conductor size of the primary
conductor in a lightning protection system is:
A. 8 AWG
B. 6 AWG
C. 4 AWG
D. 0000 AWG - correct answer -C. 4 AWG
6. A customer complains that certain electronic components (fed
from a panel board) malfunction during engine cranking.
Probable causes are all of the following except:
A. Undersized conductor feeding the panelboard
B. Faulty battery switch
C. Undersized cranking battery
, Page | 3
D. Undersized DC grounding conductor - correct answer -B.
Faulty battery switch
7. Tech A says that DC negative bus bars that are mounted to a
metal panelboard must be insulated form the metal enclosure.
Tech B says that they do not need to be insulated, Which Tech
is correct?
A. Tech A
B. Tech B
C. Both techs
D. Neither Tech - correct answer -A Tech A
8. The minimum spacing for attaching current carrying conductors
to a fuel line is:
A. 6"
B. 12"
C. 18"
D. None of the above - correct answer -D. None of the above
9. What is the minimum conductor size needed in a 25 amp AC
circuit if four current carrying conductors are bundled together
running inside an engine space using 105 deg wiring
insulation?
A. 4 AWG
B. 6 AWG
