ABYC ELECTRICAL ACTUAL EVALUATION ALL
QUESTIONS AND ANSWERS SURE A+
✔✔a. Technician A - ✔✔Technician A says generator output loads should be balanced
between legs. Technician B says as long as total output load is
below the maximum rated output no balance requirement exists. Which response is
correct?
a. Technician A
b. Technician B
c. Neither A nor B
d. Both A and B
✔✔d) If its maximum overload current exceeds 120% of its rated output. (see
11.6.2.3.2, exception) - ✔✔ABYC requires self-limiting generators to have external over
current protection...
a) To match maximum rated output
b) At 120% of maximum rated output
c) Not at all.
d) If its maximum overload current exceeds 120% of its rated output.
✔✔e. Both a and d - ✔✔Under certain circumstances, ABYC requires that a metallic
shorepower Inlet receptacle be insulated from the hull. When is that required?
a. When an isolation transformer is used
b. When no reverse polarity light is provided
c. When the boat is not bonded
d. When a galvanic isolator is installed
e. Both a and d
✔✔False - the "L" shaped prong is Ground - ✔✔T or F: The "L" shaped prong on a 20
amp shore power cord is the black or "hot" wire.
✔✔c. 135% (see A-28.11.1) - ✔✔A galvanic isolator will be connected with conductors
having an ampacity that is _____ of the isolator's rating.
a. 120%
, b. 125%
c. 135%
d. 150%
✔✔b. 125% (see E-11.10.2.5.1.1) - ✔✔An isolation transformer shall have overcurrent
protection rated at not more than _____ of the rated primary of the transformer.
a. 100%
b. 125%
c. 135%
d. 150%
✔✔c. 125% (see E-11.10.2.8.3.1) - ✔✔lf fuses are used in addition to the main shore
power disconnect circuit breaker, their rating shall be such that the circuit breakers trip
before the fuses open the circuit, in the event of overload. The ampere rating of the
additional fuses shall not be greater than ________ percent of the rating of the main
shore power disconnect circuit breaker.
a. 100%
b. 120%
c. 125%
d. 135%
✔✔b. check shore power connections - ✔✔If a customer complains of low voltage at the
AC Panel while at the dock, the technician should first
a. recalibrate the panel meter
b. check shore power connections
c. check polarity indictor
d. replace the overcurrent protection device
✔✔b. Technician B - ✔✔Technician A says overcurrent protection for the main shore
power feeders must be with 7" of the source of power (the hull
inlet connector) or 40" if the wires are sheathed or otherwise protected. Technician B
says the main shore power disconnect
breaker must be within 10' of the inlet to the boat. Which is correct?
a. Technician A
b. Technician B
c. Neither A nor B are correct
d. Depending on other conditions, both may be correct.
✔✔d. all of the above - ✔✔AC grounding conductors connect metallic non-current
carrying parts of the electrical equipment to which other part?
a. the AC grounding system onboard the boat
b. the engine negative terminal, or its bus
c. the shore AC grounding conductor through the shore power cord
d. all of the above
QUESTIONS AND ANSWERS SURE A+
✔✔a. Technician A - ✔✔Technician A says generator output loads should be balanced
between legs. Technician B says as long as total output load is
below the maximum rated output no balance requirement exists. Which response is
correct?
a. Technician A
b. Technician B
c. Neither A nor B
d. Both A and B
✔✔d) If its maximum overload current exceeds 120% of its rated output. (see
11.6.2.3.2, exception) - ✔✔ABYC requires self-limiting generators to have external over
current protection...
a) To match maximum rated output
b) At 120% of maximum rated output
c) Not at all.
d) If its maximum overload current exceeds 120% of its rated output.
✔✔e. Both a and d - ✔✔Under certain circumstances, ABYC requires that a metallic
shorepower Inlet receptacle be insulated from the hull. When is that required?
a. When an isolation transformer is used
b. When no reverse polarity light is provided
c. When the boat is not bonded
d. When a galvanic isolator is installed
e. Both a and d
✔✔False - the "L" shaped prong is Ground - ✔✔T or F: The "L" shaped prong on a 20
amp shore power cord is the black or "hot" wire.
✔✔c. 135% (see A-28.11.1) - ✔✔A galvanic isolator will be connected with conductors
having an ampacity that is _____ of the isolator's rating.
a. 120%
, b. 125%
c. 135%
d. 150%
✔✔b. 125% (see E-11.10.2.5.1.1) - ✔✔An isolation transformer shall have overcurrent
protection rated at not more than _____ of the rated primary of the transformer.
a. 100%
b. 125%
c. 135%
d. 150%
✔✔c. 125% (see E-11.10.2.8.3.1) - ✔✔lf fuses are used in addition to the main shore
power disconnect circuit breaker, their rating shall be such that the circuit breakers trip
before the fuses open the circuit, in the event of overload. The ampere rating of the
additional fuses shall not be greater than ________ percent of the rating of the main
shore power disconnect circuit breaker.
a. 100%
b. 120%
c. 125%
d. 135%
✔✔b. check shore power connections - ✔✔If a customer complains of low voltage at the
AC Panel while at the dock, the technician should first
a. recalibrate the panel meter
b. check shore power connections
c. check polarity indictor
d. replace the overcurrent protection device
✔✔b. Technician B - ✔✔Technician A says overcurrent protection for the main shore
power feeders must be with 7" of the source of power (the hull
inlet connector) or 40" if the wires are sheathed or otherwise protected. Technician B
says the main shore power disconnect
breaker must be within 10' of the inlet to the boat. Which is correct?
a. Technician A
b. Technician B
c. Neither A nor B are correct
d. Depending on other conditions, both may be correct.
✔✔d. all of the above - ✔✔AC grounding conductors connect metallic non-current
carrying parts of the electrical equipment to which other part?
a. the AC grounding system onboard the boat
b. the engine negative terminal, or its bus
c. the shore AC grounding conductor through the shore power cord
d. all of the above
