ABYC Marine Electrical Certification Exam Review
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1. Every 18 inches. How often (in inches) shall wire bundles be supported?
2. Insulated Metallic What type of clamps are to be used for supporting wire bundles when
Hanger Clamps routed over engines and machinery?
3. 40 lbs (E-11 Table XV) What tensile force must a 10 Gauge crimp connector withstand for one
minute?
4. 36 inches What is the max allowed unsupported cable length for battery cables?
5. True T or F: Running AC and DC conductors together is allowed so long as the
AC conductors are sheathed.
6. C. Unwanted open The most common electrical circuit problem in marine applications is:
A. Short circuits
B. Too much continuity
C. Unwanted open
D. Inter circuit Short
7. D. Heat The primary by-product of excessive electrical resistance is:
A. Increased Amperage
B. Increased Voltage
C. Reduced Ambient Temperature
D. Heat
8. 1 HP = 746 Watts One HP = how many watts?
9. D. TDR (time-domain What is the preferred tool for tracing shorted and open circuits?
reflectometer) A. Ohm meter
B. Amp clamp
C. Volt meter
D. TDR (time-domain reflectometer)
10. 0 AWG
, ABYC Marine Electrical Certification Exam Review
Study online at https://quizlet.com/_4rvpn7
A technician is installing a cable run from the batteries to the main DC panel
board on a boat as part of a refit. The boat has a 12-volt system and the
distance form the panel to the batteries is 15 ft. The maximum current draw
from the panel is calculated at 90 amps. What guage cable should be used
(minimum)?
11. Yellow DC grounded conductors on new boats that are also equipped with AC
systems should use what color insulated wire?
12. 16 AWG What is the smallest guage wire allowed for unsheathed wire runs through
the boat?
13. False. Start batteries T or F: Compared to deep cycle (house) batteries, cranking batteries will
have a greater num- have thicker lead plates to facilitate the higher, short-duration current
ber of thinner plates draws.
within each cell.
14. Cranking Which type of battery generally recharges faster? Deep cycle or cranking?
15. Wire brush and back- What tool and common household staple are used to clean battery termi-
ing soda. nals?
16. Most of the sulfu- Why might a fully-discharged wet-cell type battery freeze?
ric acid has been ab-
sorbed into the lead
plates, leaving most-
ly water in the elec-
trolyte.
17. 1 inch, 90 lbs or 2x the Batteries must be secured to prevent movement of more than ______
battery weight, for 1 inches in any direction when a pulling force of _____ or _____, whichever
minute in each direc- is less, is applied through the center of gravity of the battery for how long?
tion.
, ABYC Marine Electrical Certification Exam Review
Study online at https://quizlet.com/_4rvpn7
18. True T or F: it is ok to install batteries directly below an uninterrupted fuel line?
19. Must be protected What provision must be in place on any fuel line located within 12 inches
with dielectric insulat- of a battery terminals?
ing material
20. 80 F, 25 Amps, 10.5 Define: Battery reserve capacity = the number of minutes that a new, fully
Volts charged battery at ______ degrees F can be continuously discharged at
______ amps while maintaining _____ volts (for a 12 v battery)
21. 90 minutes According to ABYC, what is the minimum battery reserve capacity?
22. 32 degrees F, 30 sec- Define: Marine Cranking Amps = the discharge load, in amperes, that a new,
onds, 7.2V fully-charged battery at _____ degrees F can deliver for ______ seconds
while maintaining a voltage of _____ volts (for a 12 v battery).
23. 0 degrees F, 30 sec- Define: Cold Cranking Amps = the discharge load, in amperes, that a new,
onds, 7.2V fully-charged battery at _____ degrees F can deliver for ______ seconds
while maintaining a voltage of _____ volts (for a 12 v battery).
24. 8 AWG What is the largest guage wire that may be connected to a bettery with
wing-nuts?
25. 800 CCA or 100 Ahr Per ABYC E-10, a battery switch must be installed in the positive conductor
(exceptions: electron- from each battery bank with a CCA rating greater than ____ (or greater than
ic equipment with _____ Ah if CCA rating not available).
battery backed mem-
ories; safety equip-
ment such as bilge
pumps, alarms, CO
detectors, bilge blow-
ers; battery chargers;
, ABYC Marine Electrical Certification Exam Review
Study online at https://quizlet.com/_4rvpn7
I'm pressed current
systems.
26. AIC = 5000 Amps What is the minimum ampere interrupting capacity (AIC) for main overcur-
(E-11 table IV-A) rent protection on a battery bank rated at 12 V, 1500 CCA?
27. AIC = 2X mnfg's What is the minimum ampere interrupting capacity (AIC) for main overcur-
short-circuit rating or rent protection on a battery bank rated at more than 2200 CCA or more
100X nominal Ahr rat- than 500 Ahr?
ing.
28. False. "Readily acces- T or F: it is ok to mount a battery switch inside an engine room, because
sible" defines entry ABYC startes that it must be located as close to the batteries as practical.
into the engine room
in an emergency as
dangerous - use a re-
mote battery switch.
29. Overcurrent protec- Explain the "7-40-72" rule
tion must be located
withing 7 inches of
the power source un-
less contained with-
in a sheath, in which
case it may be up to
40 inches away. If the
power source is a bat-
tery and the conduc-
tors are sheathed, OC
may be up to 72 inch-
es away.
30. What does "trip free" breaker mean?
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1. Every 18 inches. How often (in inches) shall wire bundles be supported?
2. Insulated Metallic What type of clamps are to be used for supporting wire bundles when
Hanger Clamps routed over engines and machinery?
3. 40 lbs (E-11 Table XV) What tensile force must a 10 Gauge crimp connector withstand for one
minute?
4. 36 inches What is the max allowed unsupported cable length for battery cables?
5. True T or F: Running AC and DC conductors together is allowed so long as the
AC conductors are sheathed.
6. C. Unwanted open The most common electrical circuit problem in marine applications is:
A. Short circuits
B. Too much continuity
C. Unwanted open
D. Inter circuit Short
7. D. Heat The primary by-product of excessive electrical resistance is:
A. Increased Amperage
B. Increased Voltage
C. Reduced Ambient Temperature
D. Heat
8. 1 HP = 746 Watts One HP = how many watts?
9. D. TDR (time-domain What is the preferred tool for tracing shorted and open circuits?
reflectometer) A. Ohm meter
B. Amp clamp
C. Volt meter
D. TDR (time-domain reflectometer)
10. 0 AWG
, ABYC Marine Electrical Certification Exam Review
Study online at https://quizlet.com/_4rvpn7
A technician is installing a cable run from the batteries to the main DC panel
board on a boat as part of a refit. The boat has a 12-volt system and the
distance form the panel to the batteries is 15 ft. The maximum current draw
from the panel is calculated at 90 amps. What guage cable should be used
(minimum)?
11. Yellow DC grounded conductors on new boats that are also equipped with AC
systems should use what color insulated wire?
12. 16 AWG What is the smallest guage wire allowed for unsheathed wire runs through
the boat?
13. False. Start batteries T or F: Compared to deep cycle (house) batteries, cranking batteries will
have a greater num- have thicker lead plates to facilitate the higher, short-duration current
ber of thinner plates draws.
within each cell.
14. Cranking Which type of battery generally recharges faster? Deep cycle or cranking?
15. Wire brush and back- What tool and common household staple are used to clean battery termi-
ing soda. nals?
16. Most of the sulfu- Why might a fully-discharged wet-cell type battery freeze?
ric acid has been ab-
sorbed into the lead
plates, leaving most-
ly water in the elec-
trolyte.
17. 1 inch, 90 lbs or 2x the Batteries must be secured to prevent movement of more than ______
battery weight, for 1 inches in any direction when a pulling force of _____ or _____, whichever
minute in each direc- is less, is applied through the center of gravity of the battery for how long?
tion.
, ABYC Marine Electrical Certification Exam Review
Study online at https://quizlet.com/_4rvpn7
18. True T or F: it is ok to install batteries directly below an uninterrupted fuel line?
19. Must be protected What provision must be in place on any fuel line located within 12 inches
with dielectric insulat- of a battery terminals?
ing material
20. 80 F, 25 Amps, 10.5 Define: Battery reserve capacity = the number of minutes that a new, fully
Volts charged battery at ______ degrees F can be continuously discharged at
______ amps while maintaining _____ volts (for a 12 v battery)
21. 90 minutes According to ABYC, what is the minimum battery reserve capacity?
22. 32 degrees F, 30 sec- Define: Marine Cranking Amps = the discharge load, in amperes, that a new,
onds, 7.2V fully-charged battery at _____ degrees F can deliver for ______ seconds
while maintaining a voltage of _____ volts (for a 12 v battery).
23. 0 degrees F, 30 sec- Define: Cold Cranking Amps = the discharge load, in amperes, that a new,
onds, 7.2V fully-charged battery at _____ degrees F can deliver for ______ seconds
while maintaining a voltage of _____ volts (for a 12 v battery).
24. 8 AWG What is the largest guage wire that may be connected to a bettery with
wing-nuts?
25. 800 CCA or 100 Ahr Per ABYC E-10, a battery switch must be installed in the positive conductor
(exceptions: electron- from each battery bank with a CCA rating greater than ____ (or greater than
ic equipment with _____ Ah if CCA rating not available).
battery backed mem-
ories; safety equip-
ment such as bilge
pumps, alarms, CO
detectors, bilge blow-
ers; battery chargers;
, ABYC Marine Electrical Certification Exam Review
Study online at https://quizlet.com/_4rvpn7
I'm pressed current
systems.
26. AIC = 5000 Amps What is the minimum ampere interrupting capacity (AIC) for main overcur-
(E-11 table IV-A) rent protection on a battery bank rated at 12 V, 1500 CCA?
27. AIC = 2X mnfg's What is the minimum ampere interrupting capacity (AIC) for main overcur-
short-circuit rating or rent protection on a battery bank rated at more than 2200 CCA or more
100X nominal Ahr rat- than 500 Ahr?
ing.
28. False. "Readily acces- T or F: it is ok to mount a battery switch inside an engine room, because
sible" defines entry ABYC startes that it must be located as close to the batteries as practical.
into the engine room
in an emergency as
dangerous - use a re-
mote battery switch.
29. Overcurrent protec- Explain the "7-40-72" rule
tion must be located
withing 7 inches of
the power source un-
less contained with-
in a sheath, in which
case it may be up to
40 inches away. If the
power source is a bat-
tery and the conduc-
tors are sheathed, OC
may be up to 72 inch-
es away.
30. What does "trip free" breaker mean?
