ABYC MARINE ELECTRICAL
CERTIFICATION FINAL
EXAM QUESTIONS WITH
100% DETAILED VERIFIED
ANSWERS TOP RATED A+
[Document subtitle]
[DATE]
[COMPANY NAME]
[Company address]
,For proper inverter operation it is important to do all of the
following except
a. adequately size inverter output for connected loads
b. provide AC overcurrent circuit protection
c. provide DC overcurrent circuit protection
d. use large cranking batteries - <<,Answers>>>d. use
large cranking batteries
The inverter DC grounding conductor may be one size
smaller than than the minimum size conductor required for
the DC current carrying conductors providing the
overcurrent protection device in the DC positive conductor
is rated no greater than __________ of the ampacity of the DC
grounding conductor and the conductor is no smaller than
16 AWG.
A. 100%
B. 120%
C. 125%
D. 135% - <<,Answers>>>D. 135% (see A-31.6.5.1.2, exception)
A 2000 watt inverter is operating at 50% capacity with a 90%
effeciency rating. With a battery voltage of 12.6 volts how
many amps is the inverter drawing from the battery bank?
a. 89 amps
,b. 99 amps
c. 109 amps
d. 119 amps - <<,Answers>>>a. 89 amps
Most marine inverters will shut down automatically when
battery voltage falls below what voltage?
a. 9.7 Volts
b. 10.5 Volts
c. 11.7 Volts
d. 12 Volts - <<,Answers>>>b. 10.5 Volts
lf a separate, independent AC powered battery charger is
fitted along with an inverter/charger, the independent AC
powered charger must be:
a. fitted with output protection fuses to protect the DC output
b. not be powered when the inverter is producing AC
c. fitted with an AC case grounding wire
d. all of the above - <<,Answers>>>d. all of the above
To comply with ABYC requirements, a Neutral to Ground
connection must be present at the inverter during which of
the following conditions:
a. when in charge rnode
b. when in standby mode
c. when in transfer mode
d. when in invert mode - <<,Answers>>>d. when in invert mode
, In order to eliminate the neutral to ground connection when
shore power is being transferred through the inverter a
________ is utilized.
a. make before break transfer switch
b. break before make transfer switch
c. manual disconnect switch
d. battery selector switch - <<,Answers>>>b. break
before make transfer switch
Which ABYC standard refers to the fuse in the DC positive
conductor for inverter/battery charger output protection?
a. A-25
b. A-27
c. A-31
d. A-34 - <<,Answers>>>c. A-31
To check an inverters _________ a technician may need a true
RMS meter:
a. DC input
b. DC output
c. AC input
d. AC output - <<,Answers>>>d. AC output
Inverter output neutral shall be disconnected from ground at
the inverter when:
CERTIFICATION FINAL
EXAM QUESTIONS WITH
100% DETAILED VERIFIED
ANSWERS TOP RATED A+
[Document subtitle]
[DATE]
[COMPANY NAME]
[Company address]
,For proper inverter operation it is important to do all of the
following except
a. adequately size inverter output for connected loads
b. provide AC overcurrent circuit protection
c. provide DC overcurrent circuit protection
d. use large cranking batteries - <<,Answers>>>d. use
large cranking batteries
The inverter DC grounding conductor may be one size
smaller than than the minimum size conductor required for
the DC current carrying conductors providing the
overcurrent protection device in the DC positive conductor
is rated no greater than __________ of the ampacity of the DC
grounding conductor and the conductor is no smaller than
16 AWG.
A. 100%
B. 120%
C. 125%
D. 135% - <<,Answers>>>D. 135% (see A-31.6.5.1.2, exception)
A 2000 watt inverter is operating at 50% capacity with a 90%
effeciency rating. With a battery voltage of 12.6 volts how
many amps is the inverter drawing from the battery bank?
a. 89 amps
,b. 99 amps
c. 109 amps
d. 119 amps - <<,Answers>>>a. 89 amps
Most marine inverters will shut down automatically when
battery voltage falls below what voltage?
a. 9.7 Volts
b. 10.5 Volts
c. 11.7 Volts
d. 12 Volts - <<,Answers>>>b. 10.5 Volts
lf a separate, independent AC powered battery charger is
fitted along with an inverter/charger, the independent AC
powered charger must be:
a. fitted with output protection fuses to protect the DC output
b. not be powered when the inverter is producing AC
c. fitted with an AC case grounding wire
d. all of the above - <<,Answers>>>d. all of the above
To comply with ABYC requirements, a Neutral to Ground
connection must be present at the inverter during which of
the following conditions:
a. when in charge rnode
b. when in standby mode
c. when in transfer mode
d. when in invert mode - <<,Answers>>>d. when in invert mode
, In order to eliminate the neutral to ground connection when
shore power is being transferred through the inverter a
________ is utilized.
a. make before break transfer switch
b. break before make transfer switch
c. manual disconnect switch
d. battery selector switch - <<,Answers>>>b. break
before make transfer switch
Which ABYC standard refers to the fuse in the DC positive
conductor for inverter/battery charger output protection?
a. A-25
b. A-27
c. A-31
d. A-34 - <<,Answers>>>c. A-31
To check an inverters _________ a technician may need a true
RMS meter:
a. DC input
b. DC output
c. AC input
d. AC output - <<,Answers>>>d. AC output
Inverter output neutral shall be disconnected from ground at
the inverter when:
