Electrical Level 3 Module 5 Questions
with Correct Answers | Rated A+
Where are the overcurrent protective devices normally installed in a branch circuit? - CORRECT
ANSWER -Where the conductors receive their supply
Which of the following is true of the voltage rating of a fuse? - CORRECT ANSWER -It can be
higher than the circuit voltage but never lower.
Which type of fuse should be used to prevent nuisance tripping from temporary motor
overloads and surge currents? - CORRECT ANSWER -Dual-element, time-delay fuse
What is the maximum number of circuit breakers or sets of fuses that may be used as the
service disconnecting means in a main service panel without a main switch? - CORRECT
ANSWER -6
Which of the following are designed to withstand numerous trip and reset cycles without
replacement and can be thermal, magnetic, or solid-state? - CORRECT ANSWER -overload relays
Circuit breakers are classified by - CORRECT ANSWER -the largest ampere rating of its range
Types of fault current include overloads, short circuits, ground faults, and - CORRECT ANSWER -
arc faults
If a 120v feeder for a nonmotor loads feeds a continuous load rated at 20A and a noncontinuous
load at 30A, what size of overcurrent protective device should be selected? - CORRECT ANSWER
-60A
with Correct Answers | Rated A+
Where are the overcurrent protective devices normally installed in a branch circuit? - CORRECT
ANSWER -Where the conductors receive their supply
Which of the following is true of the voltage rating of a fuse? - CORRECT ANSWER -It can be
higher than the circuit voltage but never lower.
Which type of fuse should be used to prevent nuisance tripping from temporary motor
overloads and surge currents? - CORRECT ANSWER -Dual-element, time-delay fuse
What is the maximum number of circuit breakers or sets of fuses that may be used as the
service disconnecting means in a main service panel without a main switch? - CORRECT
ANSWER -6
Which of the following are designed to withstand numerous trip and reset cycles without
replacement and can be thermal, magnetic, or solid-state? - CORRECT ANSWER -overload relays
Circuit breakers are classified by - CORRECT ANSWER -the largest ampere rating of its range
Types of fault current include overloads, short circuits, ground faults, and - CORRECT ANSWER -
arc faults
If a 120v feeder for a nonmotor loads feeds a continuous load rated at 20A and a noncontinuous
load at 30A, what size of overcurrent protective device should be selected? - CORRECT ANSWER
-60A
