ISA UTILITY SPECIALIST (CH. 5:
ELECTRICAL KNOWLEDGE) EXAM
QUESTIONS AND ANSWERS GRADED A+
2026
What is a volt? - ANS a unit of electrical force
Electrical resistance determines how much __________ is required to move electricity along a
conductor and is measured in __________. - ANS energy;
ohms
A conductor carrying more than __________ volts would be considered a NERC line. -
ANS 200,000
2 examples of protective equipment: - ANS circuit breakers
lightning receptors
An energized wire or conductor in a circuit is also known as a __________. - ANS phase
True or False?
Guy wires are intended to help support poles but may become unintentionally energized. -
ANS true
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 1
, A __________ is similar to a fuse or cutout, but it resets after a predetermined time period. -
ANS re-closer
Minimum working distances for qualified line-clearance arborists are specified in the
__________ safety standard. - ANS ANSI Z133
When installing underground conductors, __________ should be used in tree root protection
zones. - ANS tunneling
Distribution transformers typically __________ primary circuit voltage for the end user. -
ANS reduce
Amp: - ANS the measure of electrical current
Service lines and secondary distribution lines usually carry voltage between __________-
__________ volts. - ANS 120-240
When a tree contacts one electrical conductor, it may cause a __________-to-__________ fault.
- ANS phase-ground fault
The minimum approach distance for non-qualified line clearance personnel from energized
conductors 50 kV and less: - ANS 10 feet
The condition that allows electricity to flow from one object to another is called: -
ANS potential
What is a Watt? - ANS a measure of electrical power
A phase-to-phase fault occurs when there is contact between: - ANS two or more energized
conductors
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 2
ELECTRICAL KNOWLEDGE) EXAM
QUESTIONS AND ANSWERS GRADED A+
2026
What is a volt? - ANS a unit of electrical force
Electrical resistance determines how much __________ is required to move electricity along a
conductor and is measured in __________. - ANS energy;
ohms
A conductor carrying more than __________ volts would be considered a NERC line. -
ANS 200,000
2 examples of protective equipment: - ANS circuit breakers
lightning receptors
An energized wire or conductor in a circuit is also known as a __________. - ANS phase
True or False?
Guy wires are intended to help support poles but may become unintentionally energized. -
ANS true
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 1
, A __________ is similar to a fuse or cutout, but it resets after a predetermined time period. -
ANS re-closer
Minimum working distances for qualified line-clearance arborists are specified in the
__________ safety standard. - ANS ANSI Z133
When installing underground conductors, __________ should be used in tree root protection
zones. - ANS tunneling
Distribution transformers typically __________ primary circuit voltage for the end user. -
ANS reduce
Amp: - ANS the measure of electrical current
Service lines and secondary distribution lines usually carry voltage between __________-
__________ volts. - ANS 120-240
When a tree contacts one electrical conductor, it may cause a __________-to-__________ fault.
- ANS phase-ground fault
The minimum approach distance for non-qualified line clearance personnel from energized
conductors 50 kV and less: - ANS 10 feet
The condition that allows electricity to flow from one object to another is called: -
ANS potential
What is a Watt? - ANS a measure of electrical power
A phase-to-phase fault occurs when there is contact between: - ANS two or more energized
conductors
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 2
