ABYC ELECTRICAL EXAMINERS UPDATED
QUESTIONS AND ANSWERS SURE A+
✔✔What is the maximum number of terminals allowed to be attached to any one
terminal stud based on ABYC? - ✔✔4
✔✔Under what condition can conductors of 10 AWG and larger be connected in
parallel? - ✔✔Where the ampacity of each individual conductor is sufficient to carry the
entire load current shared by the parallel conductors.
✔✔What gauge cable should be used at minimum for a 12 Volt system with a max
current draw of 90 Amps over 15 Ft? - ✔✔0 AWG
✔✔What insulation should DC grounded conductors on new boats with AC systems
use? - ✔✔Yellow
✔✔What is the maximum spacing for cable run support based on ABYC? - ✔✔18 In
✔✔What is the smallest gauge cable allowed for unsheathed wire runs through the
boat? - ✔✔18 AWG
✔✔What is the maximum sustained charging voltage acceptable to some gel battery
manufacturers? - ✔✔14.1V
✔✔How far must overcurrent protection devices be from sheathed, ungrounded
conductors connected directly to a battery? - ✔✔72 in
✔✔What does a cell reading of 0.05 points of specific gravity below all other cells in a
battery indicate? - ✔✔A bad cell and a battery replacement needed.
✔✔What type of tester do some battery manufacturers require for battery replacement
consideration? - ✔✔Conductance Tester
, ✔✔Which technician is correct regarding battery mounting considerations? - ✔✔Tech B
✔✔What is the minimum battery reserve capacity allowed based on ABYC standards? -
✔✔90 Minutes
✔✔What is the maximum wire gauge allowed for cable attachment to batteries with
wing-type nuts? - ✔✔8 AWG
✔✔What percentage of the battery's CCA rating should be placed on the battery during
load testing? - ✔✔50
✔✔To what should the metallic case of the battery charger be connected? - ✔✔DC
Grounding System
✔✔What does a voltage regulator control? - ✔✔Alternator Field Voltage
✔✔What should be checked for charger output to the battery? - ✔✔Check battery open
circuit voltage and then check for a voltage rise of 0.5 V DC or more.
✔✔Can AC and DC run together down the same conductor? - ✔✔Yes, according to
Tech A.
✔✔What is important when installing an inverter in a split bus application? - ✔✔Provide
an isolated hot bus and an isolated neutral bus.
✔✔What is the best fuse type to use for the DC feed to an inverter? - ✔✔Class T.
✔✔What type of DVOM should be used for low voltage troubleshooting on an inverter
that does not produce a true sine wave output? - ✔✔True RMS.
✔✔What is the required cumulative CCA rating for a battery switch in an inverter
installation? - ✔✔801 or more.
✔✔What tool is used to determine an inverter's level of EMI? - ✔✔Gauss Meter.
✔✔According to ABYC, how should the shore power grounded conductor be handled? -
✔✔It should not be grounded on board the boat.
✔✔What is the first test if a customer complains about receiving shocks from their boat
when plugged into shore power? - ✔✔Polarity check at the shore cord.
QUESTIONS AND ANSWERS SURE A+
✔✔What is the maximum number of terminals allowed to be attached to any one
terminal stud based on ABYC? - ✔✔4
✔✔Under what condition can conductors of 10 AWG and larger be connected in
parallel? - ✔✔Where the ampacity of each individual conductor is sufficient to carry the
entire load current shared by the parallel conductors.
✔✔What gauge cable should be used at minimum for a 12 Volt system with a max
current draw of 90 Amps over 15 Ft? - ✔✔0 AWG
✔✔What insulation should DC grounded conductors on new boats with AC systems
use? - ✔✔Yellow
✔✔What is the maximum spacing for cable run support based on ABYC? - ✔✔18 In
✔✔What is the smallest gauge cable allowed for unsheathed wire runs through the
boat? - ✔✔18 AWG
✔✔What is the maximum sustained charging voltage acceptable to some gel battery
manufacturers? - ✔✔14.1V
✔✔How far must overcurrent protection devices be from sheathed, ungrounded
conductors connected directly to a battery? - ✔✔72 in
✔✔What does a cell reading of 0.05 points of specific gravity below all other cells in a
battery indicate? - ✔✔A bad cell and a battery replacement needed.
✔✔What type of tester do some battery manufacturers require for battery replacement
consideration? - ✔✔Conductance Tester
, ✔✔Which technician is correct regarding battery mounting considerations? - ✔✔Tech B
✔✔What is the minimum battery reserve capacity allowed based on ABYC standards? -
✔✔90 Minutes
✔✔What is the maximum wire gauge allowed for cable attachment to batteries with
wing-type nuts? - ✔✔8 AWG
✔✔What percentage of the battery's CCA rating should be placed on the battery during
load testing? - ✔✔50
✔✔To what should the metallic case of the battery charger be connected? - ✔✔DC
Grounding System
✔✔What does a voltage regulator control? - ✔✔Alternator Field Voltage
✔✔What should be checked for charger output to the battery? - ✔✔Check battery open
circuit voltage and then check for a voltage rise of 0.5 V DC or more.
✔✔Can AC and DC run together down the same conductor? - ✔✔Yes, according to
Tech A.
✔✔What is important when installing an inverter in a split bus application? - ✔✔Provide
an isolated hot bus and an isolated neutral bus.
✔✔What is the best fuse type to use for the DC feed to an inverter? - ✔✔Class T.
✔✔What type of DVOM should be used for low voltage troubleshooting on an inverter
that does not produce a true sine wave output? - ✔✔True RMS.
✔✔What is the required cumulative CCA rating for a battery switch in an inverter
installation? - ✔✔801 or more.
✔✔What tool is used to determine an inverter's level of EMI? - ✔✔Gauss Meter.
✔✔According to ABYC, how should the shore power grounded conductor be handled? -
✔✔It should not be grounded on board the boat.
✔✔What is the first test if a customer complains about receiving shocks from their boat
when plugged into shore power? - ✔✔Polarity check at the shore cord.
