ABYC ELECTRICAL 2026 QUESTIONS AND
ANSWERS SURE A+
✔✔Where must all terminations for AC conductors be installed based on ABYC? -
✔✔Inside an enclosure requiring the use of hand tools to open
✔✔What is the best tool for locating shorts within a circuit based on the study guide? -
✔✔TDR
✔✔High frequency transformers typically run cooler or hotter than traditional magnetic
transformers? - ✔✔Cooler
✔✔Under what condition may AC receptacles be used for DC service based on ABYC?
- ✔✔They must never be used for DC service
✔✔Motor circuits that do not provide their own integrated thermal cutout must be fused
based on what? - ✔✔Motor Vendor Recommendations
✔✔What should a technician use when testing for a non-functional tachometer on a
diesel engine? - ✔✔A DVOM set to the AC volts scale
✔✔What is the problem if a temperature gauge reads full scale after grounding the wire
from the temp sending unit? - ✔✔A faulty sending unit
✔✔Which technician is correct regarding grounding of combined AC/DC panel boards?
- ✔✔Tech B
✔✔What will CO monitors detect except for which option? - ✔✔Smoke
✔✔What is the most common tool used in a corrosion survey? - ✔✔Portable Hull
Potential Meter
, ✔✔What is the appropriate bonding conductor sizing for a system tied in to offer
lightning protection based on ABYC? - ✔✔4 AWG
✔✔What does paralleling batteries increase? - ✔✔Capacity
✔✔What is a proper test to verify the integrity of the shore power ground? - ✔✔Measure
resistance between the shore power grounding conductor and AC grounding bus
✔✔A reverse polarity indicator should be connected between which two points? -
✔✔Neutral and Ground
✔✔ Who is correct about securing generator AC conductors? - ✔✔Both Tech A and
Tech B
✔✔What is the required over current protection distance for AC generator conductors? -
✔✔A and B (7" or 40" if properly sheathed)
✔✔What is the most likely problem if the oil pressure gauge needle moves to the right
when the sensor wire is grounded? - ✔✔A bad sensing unit
✔✔Where should you connect the volt meter leads to test voltage drop to the cranking
motor? - ✔✔Both B and C (to the negative and positive battery posts while cranking)
✔✔What is the minimum conductor size for a lightning protection system according to
ABYC? - ✔✔4 AWG
✔✔What is a probable cause for malfunctioning electronic components during engine
cranking? - ✔✔Faulty battery switch
✔✔Which technician is correct about DC negative bus bars mounted to a metal
panelboard? - ✔✔Tech A
✔✔What is the minimum spacing for attaching current carrying conductors to a fuel
line? - ✔✔None of the above
✔✔What is the minimum conductor size needed in a 25 amp AC circuit with four
bundled conductors? - ✔✔10 AWG
✔✔How much current should flow through the DC grounding conductor in a 25 amp DC
motor circuit? - ✔✔0 amps
ANSWERS SURE A+
✔✔Where must all terminations for AC conductors be installed based on ABYC? -
✔✔Inside an enclosure requiring the use of hand tools to open
✔✔What is the best tool for locating shorts within a circuit based on the study guide? -
✔✔TDR
✔✔High frequency transformers typically run cooler or hotter than traditional magnetic
transformers? - ✔✔Cooler
✔✔Under what condition may AC receptacles be used for DC service based on ABYC?
- ✔✔They must never be used for DC service
✔✔Motor circuits that do not provide their own integrated thermal cutout must be fused
based on what? - ✔✔Motor Vendor Recommendations
✔✔What should a technician use when testing for a non-functional tachometer on a
diesel engine? - ✔✔A DVOM set to the AC volts scale
✔✔What is the problem if a temperature gauge reads full scale after grounding the wire
from the temp sending unit? - ✔✔A faulty sending unit
✔✔Which technician is correct regarding grounding of combined AC/DC panel boards?
- ✔✔Tech B
✔✔What will CO monitors detect except for which option? - ✔✔Smoke
✔✔What is the most common tool used in a corrosion survey? - ✔✔Portable Hull
Potential Meter
, ✔✔What is the appropriate bonding conductor sizing for a system tied in to offer
lightning protection based on ABYC? - ✔✔4 AWG
✔✔What does paralleling batteries increase? - ✔✔Capacity
✔✔What is a proper test to verify the integrity of the shore power ground? - ✔✔Measure
resistance between the shore power grounding conductor and AC grounding bus
✔✔A reverse polarity indicator should be connected between which two points? -
✔✔Neutral and Ground
✔✔ Who is correct about securing generator AC conductors? - ✔✔Both Tech A and
Tech B
✔✔What is the required over current protection distance for AC generator conductors? -
✔✔A and B (7" or 40" if properly sheathed)
✔✔What is the most likely problem if the oil pressure gauge needle moves to the right
when the sensor wire is grounded? - ✔✔A bad sensing unit
✔✔Where should you connect the volt meter leads to test voltage drop to the cranking
motor? - ✔✔Both B and C (to the negative and positive battery posts while cranking)
✔✔What is the minimum conductor size for a lightning protection system according to
ABYC? - ✔✔4 AWG
✔✔What is a probable cause for malfunctioning electronic components during engine
cranking? - ✔✔Faulty battery switch
✔✔Which technician is correct about DC negative bus bars mounted to a metal
panelboard? - ✔✔Tech A
✔✔What is the minimum spacing for attaching current carrying conductors to a fuel
line? - ✔✔None of the above
✔✔What is the minimum conductor size needed in a 25 amp AC circuit with four
bundled conductors? - ✔✔10 AWG
✔✔How much current should flow through the DC grounding conductor in a 25 amp DC
motor circuit? - ✔✔0 amps
