IYRS Electrical ABYC Exam
Questions and Verified Answers
0 amps - correct answer ✔✔How much current should flow through the
DC grounding conductor in a 25-amp DC motor circuit
0 AWG - correct answer ✔✔A technician is installing the cable run from the batteries to the
main DC panelboard on a boat aspart of a refit. The boat has a 12-volt system, and the distance
from the panel to the batteries is 15 ft (approximately 3 m).The maximum current draw from
the panel is calculated at 90 amps.What gauge cable should be used at a minimum to maintain
Standards compliance?
1 - correct answer ✔✔The RMS multiplier you use to determine harmonic distortion in an AC
power supply is
100 - correct answer ✔✔Traditional battery load testing methods dictate that a load equivalent
to _____ % of the battery's CCA rating be placed on the battery
14 - correct answer ✔✔The maximum sustained charging voltage acceptable to some gel cell
battery manufacturers is
15 - correct answer ✔✔The minimum amp circuit breaker that should be used to protect a
120V water heater circuit with a 1600-watt element would be rated at ________ amps
16 AWG - correct answer ✔✔the smallest gauge cable allowed for unsheathed wire runs
through the boat is
, 16 inches (400 mm) - correct answer ✔✔the maximum spacing for cable run support based on
ABYC is
24 inches - correct answer ✔✔When Multiple conductors are bundled for a distance greater
than ____ inches, the allowable ampacity of each conductor must be derated based on a table
found within standard E-11
3% - correct answer ✔✔the maximum allowable voltage drop permitted for panel board DC
feeders based on ABYC is
4 - correct answer ✔✔The maximum number of terminals allowed to be attached to any one
terminal stud based on ABYC is
40 Inches - correct answer ✔✔Sheathed, ungrounded conductors connected directly to a
battery must have overcurrent protection devices located within _______ of connection to the
battery
6 AWG - correct answer ✔✔Appropriate bonding conductor sizing for a system tied in to offer
lightning protections ____ based on ABYC
8 AWG - correct answer ✔✔Based on ABYC standards, cable attachment to batteries with wing
type nuts is allowed as long as the wire gauge does not exceed
801 - correct answer ✔✔as part of an inverter installation, a battery switch is required if the DC
power source has a cumulative CCA rating of _____ or more
9 inches (225 mm) - correct answer ✔✔according to ABYC acceptable minimum clearance for
routing wire near a dry exhaust section is
Questions and Verified Answers
0 amps - correct answer ✔✔How much current should flow through the
DC grounding conductor in a 25-amp DC motor circuit
0 AWG - correct answer ✔✔A technician is installing the cable run from the batteries to the
main DC panelboard on a boat aspart of a refit. The boat has a 12-volt system, and the distance
from the panel to the batteries is 15 ft (approximately 3 m).The maximum current draw from
the panel is calculated at 90 amps.What gauge cable should be used at a minimum to maintain
Standards compliance?
1 - correct answer ✔✔The RMS multiplier you use to determine harmonic distortion in an AC
power supply is
100 - correct answer ✔✔Traditional battery load testing methods dictate that a load equivalent
to _____ % of the battery's CCA rating be placed on the battery
14 - correct answer ✔✔The maximum sustained charging voltage acceptable to some gel cell
battery manufacturers is
15 - correct answer ✔✔The minimum amp circuit breaker that should be used to protect a
120V water heater circuit with a 1600-watt element would be rated at ________ amps
16 AWG - correct answer ✔✔the smallest gauge cable allowed for unsheathed wire runs
through the boat is
, 16 inches (400 mm) - correct answer ✔✔the maximum spacing for cable run support based on
ABYC is
24 inches - correct answer ✔✔When Multiple conductors are bundled for a distance greater
than ____ inches, the allowable ampacity of each conductor must be derated based on a table
found within standard E-11
3% - correct answer ✔✔the maximum allowable voltage drop permitted for panel board DC
feeders based on ABYC is
4 - correct answer ✔✔The maximum number of terminals allowed to be attached to any one
terminal stud based on ABYC is
40 Inches - correct answer ✔✔Sheathed, ungrounded conductors connected directly to a
battery must have overcurrent protection devices located within _______ of connection to the
battery
6 AWG - correct answer ✔✔Appropriate bonding conductor sizing for a system tied in to offer
lightning protections ____ based on ABYC
8 AWG - correct answer ✔✔Based on ABYC standards, cable attachment to batteries with wing
type nuts is allowed as long as the wire gauge does not exceed
801 - correct answer ✔✔as part of an inverter installation, a battery switch is required if the DC
power source has a cumulative CCA rating of _____ or more
9 inches (225 mm) - correct answer ✔✔according to ABYC acceptable minimum clearance for
routing wire near a dry exhaust section is
