Practice test PSI TEST BANK ACTUAL EXAM WITH
COMPLETE APPROVED QUESTIONS AND CORRECT
VERIFIED ANSWERS (A NEW UPDATED VERSION)
|ALREADY GRADED A+ 2026-2027
What is the greatest root-mean-square (effective) difference of
potential between any two conductors of a circuit defined as?
ANSWERS: voltage
A resistor has the following colored bands (in order): orange, red,
brown, silver. What is the resistor value?
ANSWERS: 320 Ohms (10% tolerance)
What is the formula for calculating power (watts)?
ANSWERS: R x I 2
One horsepower is equal to how many watts?
ANSWERS: 746
,For other than a totally enclosed switchboard or switchgear, what is
the minimum amount of space that shall be provided between the top
of the unshielded switchboard or switchgear and any combustible
ceiling?
ANSWERS: 36"
What is the required width of the working space in front of electrical
equipment with a 22-inch width?
ANSWERS: 30 inches
What is the minimum fire rating for electrical vaults housing electrical
equipment over 600 volts, nominal?
ANSWERS: 3 hours
What is the maximum voltage drop for any branch circuit, separately
derived system, operating at 120 volts line-to-line and 60 volts to
ground, serving sensitive electronic equipment?
ANSWERS: 1.5 %
Service conductors installed as open conductors or multiconductor
cable without an overall outer jacket shall have a minimum clearance
of how many feet from porches and balconies?
ANSWERS: 3 feet
,Where a feeder supplies continuous loads or any combination of
continuous and noncontinuous loads, the minimum feeder
conductor size
shall have an allowable ampacity not less than the noncontinuous
load plus what percentage of the continuous load?
ANSWERS: 125%
What is the recommended maximum total voltage drop on both
feeders and branch circuits to the farthest outlet?
ANSWERS: 5%
Temporary electric power and lighting installations for holiday
decorative lighting shall be permitted for a period not to exceed
how many days?
ANSWERS: 90 days
Receptacles in residential units shall be installed such that no point
measured horizontally along the floor line of any wall space is
more than how far from a receptacle outlet?
ANSWERS: 6 feet
Which type of conduit is not permitted to be used to install
underground service conductors?
ANSWERS: FMC
, What clearance must be maintained when overhead spans of open
conductors or open multiconductor cables of not over 1,000 volts,
nominal, pass over residential property?
ANSWERS: 12 feet
The feeder conductor ampacity shall not be less than that of the
service conductors where the feeder conductors carry the total load
supplied by service conductors with an ampacity of
ANSWERS: 55 amperes or less.
Where the negative polarity of a dc system does not serve as
the connection point for the grounded conductor, which color
finish can be used to identify the negative ungrounded
conductor?
ANSWERS: black
What is the maximum permitted length of the branch-circuit wiring
from the branch-circuit overcurrent device to the first outlet for a
12 AWG conductor with a listed outlet branch-circuit type arc-fault
circuit interrupter installed at the first outlet boX?
ANSWERS: 70 feet
COMPLETE APPROVED QUESTIONS AND CORRECT
VERIFIED ANSWERS (A NEW UPDATED VERSION)
|ALREADY GRADED A+ 2026-2027
What is the greatest root-mean-square (effective) difference of
potential between any two conductors of a circuit defined as?
ANSWERS: voltage
A resistor has the following colored bands (in order): orange, red,
brown, silver. What is the resistor value?
ANSWERS: 320 Ohms (10% tolerance)
What is the formula for calculating power (watts)?
ANSWERS: R x I 2
One horsepower is equal to how many watts?
ANSWERS: 746
,For other than a totally enclosed switchboard or switchgear, what is
the minimum amount of space that shall be provided between the top
of the unshielded switchboard or switchgear and any combustible
ceiling?
ANSWERS: 36"
What is the required width of the working space in front of electrical
equipment with a 22-inch width?
ANSWERS: 30 inches
What is the minimum fire rating for electrical vaults housing electrical
equipment over 600 volts, nominal?
ANSWERS: 3 hours
What is the maximum voltage drop for any branch circuit, separately
derived system, operating at 120 volts line-to-line and 60 volts to
ground, serving sensitive electronic equipment?
ANSWERS: 1.5 %
Service conductors installed as open conductors or multiconductor
cable without an overall outer jacket shall have a minimum clearance
of how many feet from porches and balconies?
ANSWERS: 3 feet
,Where a feeder supplies continuous loads or any combination of
continuous and noncontinuous loads, the minimum feeder
conductor size
shall have an allowable ampacity not less than the noncontinuous
load plus what percentage of the continuous load?
ANSWERS: 125%
What is the recommended maximum total voltage drop on both
feeders and branch circuits to the farthest outlet?
ANSWERS: 5%
Temporary electric power and lighting installations for holiday
decorative lighting shall be permitted for a period not to exceed
how many days?
ANSWERS: 90 days
Receptacles in residential units shall be installed such that no point
measured horizontally along the floor line of any wall space is
more than how far from a receptacle outlet?
ANSWERS: 6 feet
Which type of conduit is not permitted to be used to install
underground service conductors?
ANSWERS: FMC
, What clearance must be maintained when overhead spans of open
conductors or open multiconductor cables of not over 1,000 volts,
nominal, pass over residential property?
ANSWERS: 12 feet
The feeder conductor ampacity shall not be less than that of the
service conductors where the feeder conductors carry the total load
supplied by service conductors with an ampacity of
ANSWERS: 55 amperes or less.
Where the negative polarity of a dc system does not serve as
the connection point for the grounded conductor, which color
finish can be used to identify the negative ungrounded
conductor?
ANSWERS: black
What is the maximum permitted length of the branch-circuit wiring
from the branch-circuit overcurrent device to the first outlet for a
12 AWG conductor with a listed outlet branch-circuit type arc-fault
circuit interrupter installed at the first outlet boX?
ANSWERS: 70 feet
