ABYC MARINE ELECTRICAL CERTIFICATION ACTUAL EXAM |
QUESTIONS AND ANSWERS | VERIFIED ANSWERS GRADED A+ |
LATEST EXAM UPDATE
Every 18 inches. - CORRECT ANSWER - How often (in inches) shall wire
bundles be supported?
Insulated Metallic Hanger Clamps - CORRECT ANSWER - What type of
clamps are to be used for supporting wire bundles when routed over engines and
machinery?
40 lbs (E-11 Table XV) - CORRECT ANSWER - What tensile force must a 10
Gauge crimp connector withstand for one minute?
36 inches - CORRECT ANSWER - What is the max allowed unsupported
cable length for battery cables?
True - CORRECT ANSWER - T or F: Running AC and DC conductors
together is allowed so long as the AC conductors are sheathed.
C. Unwanted open - CORRECT ANSWER - The most common electrical
circuit problem in marine applications is:
A. Short circuits
B. Too much continuity
C. Unwanted open
D. Inter circuit Short
D. Heat - CORRECT ANSWER - The primary by-product of excessive
electrical resistance is:
A. Increased Amperage
,B. Increased Voltage
C. Reduced Ambient Temperature
D. Heat
1 HP = 746 Watts - CORRECT ANSWER - One HP = how many watts?
D. TDR (time-domain reflectometer) - CORRECT ANSWER - What is the
preferred tool for tracing shorted and open circuits?
A. Ohm meter
B. Amp clamp
C. Volt meter
D. TDR (time-domain reflectometer)
0 AWG - CORRECT ANSWER - 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)?
Yellow - CORRECT ANSWER - DC grounded conductors on new boats that
are also equipped with AC systems should use what color insulated wire?
16 AWG - CORRECT ANSWER - What is the smallest guage wire allowed
for unsheathed wire runs through the boat?
False. Start batteries have a greater number of thinner plates within each cell. -
CORRECT ANSWER - T or F: Compared to deep cycle (house) batteries,
cranking batteries will have thicker lead plates to facilitate the higher, short-
duration current draws.
,Cranking - CORRECT ANSWER - Which type of battery generally recharges
faster? Deep cycle or cranking?
Wire brush and backing soda. - CORRECT ANSWER - What tool and
common household staple are used to clean battery terminals?
Most of the sulfuric acid has been absorbed into the lead plates, leaving mostly
water in the electrolyte. - CORRECT ANSWER - Why might a fully-
discharged wet-cell type battery freeze?
1 inch, 90 lbs or 2x the battery weight, for 1 minute in each direction. -
CORRECT ANSWER - Batteries must be secured to prevent movement of
more than ______ inches in any direction when a pulling force of _____ or
_____, whichever is less, is applied through the center of gravity of the battery
for how long?
True - CORRECT ANSWER - T or F: it is ok to install batteries directly below
an uninterrupted fuel line?
Must be protected with dielectric insulating material - CORRECT ANSWER -
What provision must be in place on any fuel line located within 12 inches of a
battery terminals?
80 F, 25 Amps, 10.5 Volts - CORRECT ANSWER - Define: Battery reserve
capacity = the number of minutes that a new, fully charged battery at ______
degrees F can be continuously discharged at ______ amps while maintaining
_____ volts (for a 12 v battery)
90 minutes - CORRECT ANSWER - According to ABYC, what is the
minimum battery reserve capacity?
, 32 degrees F, 30 seconds, 7.2V - CORRECT ANSWER - Define: Marine
Cranking Amps = the discharge load, in amperes, that a new, fully-charged
battery at _____ degrees F can deliver for ______ seconds while maintaining a
voltage of _____ volts (for a 12 v battery).
0 degrees F, 30 seconds, 7.2V - CORRECT ANSWER - Define: Cold
Cranking Amps = the discharge load, in amperes, that a new, fully-charged
battery at _____ degrees F can deliver for ______ seconds while maintaining a
voltage of _____ volts (for a 12 v battery).
8 AWG - CORRECT ANSWER - What is the largest guage wire that may be
connected to a bettery with wing-nuts?
800 CCA or 100 Ahr (exceptions: electronic equipment with battery backed
memories; safety equipment such as bilge pumps, alarms, CO detectors, bilge
blowers; battery chargers; I'm pressed current systems. - CORRECT
ANSWER - Per ABYC E-10, a battery switch must be installed in the positive
conductor from each battery bank with a CCA rating greater than ____ (or
greater than _____ Ah if CCA rating not available).
AIC = 5000 Amps (E-11 table IV-A) - CORRECT ANSWER - What is the
minimum ampere interrupting capacity (AIC) for main overcurrent protection
on a battery bank rated at 12 V, 1500 CCA?
AIC = 2X mnfg's short-circuit rating or 100X nominal Ahr rating. - CORRECT
ANSWER - What is the minimum ampere interrupting capacity (AIC) for main
overcurrent protection on a battery bank rated at more than 2200 CCA or more
than 500 Ahr?
False. "Readily accessible" defines entry into the engine room in an emergency
as dangerous - use a remote battery switch. - CORRECT ANSWER - T or F: it
is ok to mount a battery switch inside an engine room, because ABYC startes
that it must be located as close to the batteries as practical.
QUESTIONS AND ANSWERS | VERIFIED ANSWERS GRADED A+ |
LATEST EXAM UPDATE
Every 18 inches. - CORRECT ANSWER - How often (in inches) shall wire
bundles be supported?
Insulated Metallic Hanger Clamps - CORRECT ANSWER - What type of
clamps are to be used for supporting wire bundles when routed over engines and
machinery?
40 lbs (E-11 Table XV) - CORRECT ANSWER - What tensile force must a 10
Gauge crimp connector withstand for one minute?
36 inches - CORRECT ANSWER - What is the max allowed unsupported
cable length for battery cables?
True - CORRECT ANSWER - T or F: Running AC and DC conductors
together is allowed so long as the AC conductors are sheathed.
C. Unwanted open - CORRECT ANSWER - The most common electrical
circuit problem in marine applications is:
A. Short circuits
B. Too much continuity
C. Unwanted open
D. Inter circuit Short
D. Heat - CORRECT ANSWER - The primary by-product of excessive
electrical resistance is:
A. Increased Amperage
,B. Increased Voltage
C. Reduced Ambient Temperature
D. Heat
1 HP = 746 Watts - CORRECT ANSWER - One HP = how many watts?
D. TDR (time-domain reflectometer) - CORRECT ANSWER - What is the
preferred tool for tracing shorted and open circuits?
A. Ohm meter
B. Amp clamp
C. Volt meter
D. TDR (time-domain reflectometer)
0 AWG - CORRECT ANSWER - 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)?
Yellow - CORRECT ANSWER - DC grounded conductors on new boats that
are also equipped with AC systems should use what color insulated wire?
16 AWG - CORRECT ANSWER - What is the smallest guage wire allowed
for unsheathed wire runs through the boat?
False. Start batteries have a greater number of thinner plates within each cell. -
CORRECT ANSWER - T or F: Compared to deep cycle (house) batteries,
cranking batteries will have thicker lead plates to facilitate the higher, short-
duration current draws.
,Cranking - CORRECT ANSWER - Which type of battery generally recharges
faster? Deep cycle or cranking?
Wire brush and backing soda. - CORRECT ANSWER - What tool and
common household staple are used to clean battery terminals?
Most of the sulfuric acid has been absorbed into the lead plates, leaving mostly
water in the electrolyte. - CORRECT ANSWER - Why might a fully-
discharged wet-cell type battery freeze?
1 inch, 90 lbs or 2x the battery weight, for 1 minute in each direction. -
CORRECT ANSWER - Batteries must be secured to prevent movement of
more than ______ inches in any direction when a pulling force of _____ or
_____, whichever is less, is applied through the center of gravity of the battery
for how long?
True - CORRECT ANSWER - T or F: it is ok to install batteries directly below
an uninterrupted fuel line?
Must be protected with dielectric insulating material - CORRECT ANSWER -
What provision must be in place on any fuel line located within 12 inches of a
battery terminals?
80 F, 25 Amps, 10.5 Volts - CORRECT ANSWER - Define: Battery reserve
capacity = the number of minutes that a new, fully charged battery at ______
degrees F can be continuously discharged at ______ amps while maintaining
_____ volts (for a 12 v battery)
90 minutes - CORRECT ANSWER - According to ABYC, what is the
minimum battery reserve capacity?
, 32 degrees F, 30 seconds, 7.2V - CORRECT ANSWER - Define: Marine
Cranking Amps = the discharge load, in amperes, that a new, fully-charged
battery at _____ degrees F can deliver for ______ seconds while maintaining a
voltage of _____ volts (for a 12 v battery).
0 degrees F, 30 seconds, 7.2V - CORRECT ANSWER - Define: Cold
Cranking Amps = the discharge load, in amperes, that a new, fully-charged
battery at _____ degrees F can deliver for ______ seconds while maintaining a
voltage of _____ volts (for a 12 v battery).
8 AWG - CORRECT ANSWER - What is the largest guage wire that may be
connected to a bettery with wing-nuts?
800 CCA or 100 Ahr (exceptions: electronic equipment with battery backed
memories; safety equipment such as bilge pumps, alarms, CO detectors, bilge
blowers; battery chargers; I'm pressed current systems. - CORRECT
ANSWER - Per ABYC E-10, a battery switch must be installed in the positive
conductor from each battery bank with a CCA rating greater than ____ (or
greater than _____ Ah if CCA rating not available).
AIC = 5000 Amps (E-11 table IV-A) - CORRECT ANSWER - What is the
minimum ampere interrupting capacity (AIC) for main overcurrent protection
on a battery bank rated at 12 V, 1500 CCA?
AIC = 2X mnfg's short-circuit rating or 100X nominal Ahr rating. - CORRECT
ANSWER - What is the minimum ampere interrupting capacity (AIC) for main
overcurrent protection on a battery bank rated at more than 2200 CCA or more
than 500 Ahr?
False. "Readily accessible" defines entry into the engine room in an emergency
as dangerous - use a remote battery switch. - CORRECT ANSWER - T or F: it
is ok to mount a battery switch inside an engine room, because ABYC startes
that it must be located as close to the batteries as practical.
