1|Page
ABYC Marine Electrical Certification 2025/2026 Exam
Questions &100% Detailed
Newest Update
According to ABYC, what is the minimum battery reserve
capacity? - ANSWER-90 minutes
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). -
ANSWER-32 degrees F, 30 seconds, 7.2V
,2|Page
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). -
ANSWER-0 degrees F, 30 seconds, 7.2V
What is the largest guage wire that may be connected to a
bettery with wing-nuts? - ANSWER-8 AWG
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). - ANSWER-800 CCA or 100 Ahr
(exceptions: electronic equipment with battery backed
memories; safety equipment such as bilge pumps, alarms,
,3|Page
CO detectors, bilge blowers; battery chargers; I'm pressed
current systems.
What is the minimum ampere interrupting capacity (AIC)
for main overcurrent protection on a battery bank rated at
12 V, 1500 CCA? - ANSWER-AIC = 5000 Amps (E-11
table IV-A)
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? - ANSWER-
AIC = 2X mnfg's short-circuit rating or 100X nominal Ahr
rating.
, 4|Page
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. - ANSWER-False.
"Readily accessible" defines entry into the engine room in
an emergency as dangerous - use a remote battery
switch.
Explain the "7-40-72" rule - ANSWER-Overcurrent
protection must be located withing 7 inches of the power
source unless contained within a sheath, in which case it
may be up to 40 inches away. If the power source is a
battery and the conductors are sheathed, OC may be up
to 72 inches away.
ABYC Marine Electrical Certification 2025/2026 Exam
Questions &100% Detailed
Newest Update
According to ABYC, what is the minimum battery reserve
capacity? - ANSWER-90 minutes
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). -
ANSWER-32 degrees F, 30 seconds, 7.2V
,2|Page
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). -
ANSWER-0 degrees F, 30 seconds, 7.2V
What is the largest guage wire that may be connected to a
bettery with wing-nuts? - ANSWER-8 AWG
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). - ANSWER-800 CCA or 100 Ahr
(exceptions: electronic equipment with battery backed
memories; safety equipment such as bilge pumps, alarms,
,3|Page
CO detectors, bilge blowers; battery chargers; I'm pressed
current systems.
What is the minimum ampere interrupting capacity (AIC)
for main overcurrent protection on a battery bank rated at
12 V, 1500 CCA? - ANSWER-AIC = 5000 Amps (E-11
table IV-A)
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? - ANSWER-
AIC = 2X mnfg's short-circuit rating or 100X nominal Ahr
rating.
, 4|Page
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. - ANSWER-False.
"Readily accessible" defines entry into the engine room in
an emergency as dangerous - use a remote battery
switch.
Explain the "7-40-72" rule - ANSWER-Overcurrent
protection must be located withing 7 inches of the power
source unless contained within a sheath, in which case it
may be up to 40 inches away. If the power source is a
battery and the conductors are sheathed, OC may be up
to 72 inches away.
