ABYC Marine Electrical Certification Review EXAM WITH COMPLETE QUESTIONS AND CORRECT ANSWERS LATEST UPDATE JUST RELEASED

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ABYC Marine Electrical Certification Review EXAM WITH
COMPLETE QUESTIONS AND CORRECT ANSWERS LATEST
UPDATE JUST RELEASED


Question: 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% - CORRECT ANSWER✔✔D. 135% (see A-31.6.5.1.2, exception)




Question: 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 - CORRECT ANSWER✔✔a. 89 amps




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Question: 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 - CORRECT ANSWER✔✔b. 10.5 Volts




Question: 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 - CORRECT ANSWER✔✔d. all of the above




Question: 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 - CORRECT ANSWER✔✔d. when in invert mode


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Question: 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 - CORRECT ANSWER✔✔b. break before make transfer switch




Question: 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 - CORRECT ANSWER✔✔c. A-31




Question: To check an inverters _________ a technician may need a true RMS meter:

a. DC input

b. DC output

c. AC input

d. AC output - CORRECT ANSWER✔✔d. AC output

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Question: Inverter output neutral shall be disconnected from ground at the inverter when:

a. Inverter is operating as a charger

b. Inverter is operating as a transfer device

c. Inverter is operating in pass through mode

d. All of the above - CORRECT ANSWER✔✔d. All of the above




Question: An inverter or inverter charger must be installed at least ______ feet above normal
accumulation of bilge water, or protected from bilge water splash.

a. 1

b. 2

c. 3

d. 4 - CORRECT ANSWER✔✔b. 2




Question: Which AC equipment should not run & will be damaged from a 'square' or 'modified'
wave inverter

a. AC induction motors

b. Flatscreen T V

c. Printers

d. AC halogen lighting - CORRECT ANSWER✔✔a. AC induction motors

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