©THEBRIGHT 2024/2025 ALL RIGHTS RESERVED.
Module 5 NCCER level 3 Exam Questions
And Answers 100% Guaranteed Pass.
Where are the overcurrent protective devices normally installed in a branch circuit? -
Answer✔Where the branch circuit receives its supply
What sit he 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 - Answer✔6
To prevent the normal motor starting current from affecting the fuse operation, non-time delay
fuses can be sized at ____ - Answer✔300%
For 480V circuits, the available arc current seldom exceeds ____ percentage - Answer✔60
The recommended method of detecting short circuit currents is the _____ method -
Answer✔point to point
Types of fault current include overloads, short circuits, ground faults, and ____ - Answer✔arc
faults
UL Class R fuses have a short circuit interrupting rating of up to _____ - Answer✔200,000 amps
A feeder circuit with no motor load has a continuous load of 5 amps. and a noncontinuous load
of 5 amps. The feeder overcurrent protective device should be sized at ____ - Answer✔(11.25)
15
True of False. The voltage rating of a fuse can be lower than the circuit voltage but never higher
- Answer✔False (The voltage rating can be higher but never lower)
True of False. The magnetic portion of a standard circuit breaker prevents the device from
tripping due to a short circuit - Answer✔False (It allows the device to trip due to short circuit)
A feeder circuit with no motor load has a continuous of 10 amps and a noncontinuous load of 10
amps. The feeder overcurrent protective device should be sized at ____ amps - Answer✔(22.5)
30
True or False. Reliability is within the basic scope of Underwriters Laboratories work -
Answer✔False (Safety is the primary consideration of UL)
1|Page
Module 5 NCCER level 3 Exam Questions
And Answers 100% Guaranteed Pass.
Where are the overcurrent protective devices normally installed in a branch circuit? -
Answer✔Where the branch circuit receives its supply
What sit he 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 - Answer✔6
To prevent the normal motor starting current from affecting the fuse operation, non-time delay
fuses can be sized at ____ - Answer✔300%
For 480V circuits, the available arc current seldom exceeds ____ percentage - Answer✔60
The recommended method of detecting short circuit currents is the _____ method -
Answer✔point to point
Types of fault current include overloads, short circuits, ground faults, and ____ - Answer✔arc
faults
UL Class R fuses have a short circuit interrupting rating of up to _____ - Answer✔200,000 amps
A feeder circuit with no motor load has a continuous load of 5 amps. and a noncontinuous load
of 5 amps. The feeder overcurrent protective device should be sized at ____ - Answer✔(11.25)
15
True of False. The voltage rating of a fuse can be lower than the circuit voltage but never higher
- Answer✔False (The voltage rating can be higher but never lower)
True of False. The magnetic portion of a standard circuit breaker prevents the device from
tripping due to a short circuit - Answer✔False (It allows the device to trip due to short circuit)
A feeder circuit with no motor load has a continuous of 10 amps and a noncontinuous load of 10
amps. The feeder overcurrent protective device should be sized at ____ amps - Answer✔(22.5)
30
True or False. Reliability is within the basic scope of Underwriters Laboratories work -
Answer✔False (Safety is the primary consideration of UL)
1|Page
