Electrical Code Test Exam Questions
& Answers (Grade A+)
Which item below would be considered part of the company
general overhead? -
correct answer ✅Telephone at the contractor's office
What is not included in Company Overhead? -
correct answer ✅Body Bonds
What does JIT stands for on a job site in regards to deliveries? -
correct answer ✅Just in time
What La One Call is used what determines their start and stop
points for marking? -
correct answer ✅The area the contractors designates that he is
working in
Normally, the best way to keep costs down is to have deliveries
made? -
correct answer ✅At the time the materials are needed (JIT)
Under water lighting fixtures are in the walls of the permanently
installed swimming pool. Disregard NEC exceptions. The top of the
fixture lens must be at least _________ inches below the normal
,Electrical Code Test Exam Questions
& Answers (Grade A+)
water level of the pool. -
correct answer ✅18
Given: An installation for which the NEC requires a second "made"
grounding electrode to supplement the first. What is the minimum
distance allowed between these two electrodes? -
correct answer ✅6'
A 120/208 volt three phase service is fed with a single size 500
kcmil copper conductors for each phase. A copper grounding
electrode conductor from the main service panel to the cold water
pipe line mist be at least size _________. -
correct answer ✅1/0 AWG
A metal raceway protects a grounding electrode conductor. The
raceway is connected on one end to a panel that has concentric
knock-outs. What is the minimum grounding requirement for this
GEC raceway? -
correct answer ✅It requires a bounding jumper to the GEC at both
ends of the raceway
A one family dwelling contains a 200 amp single phase service
panel, supplied with a #2/0 THW conductor. A minimum size
,Electrical Code Test Exam Questions
& Answers (Grade A+)
bonding jumper for this service is _________. -
correct answer ✅#6 copper
Which of the following is NOT an approved method of connecting a
grounding conductor to a grounding electrode? -
correct answer ✅Soldering
Given: A circuit has resistive loads of 4 Ohms, and 20 Ohms
connected in parallel. What is the combined total resistance? -
correct answer ✅2 Ohms
The largest available conductor for an electrical installation has a
resistance of 1.5 Ohms per 1,000 feet. To meet the voltage drop
specifications a maximum resistance of the current is .3 Ohms.
What is the maximum combined conductor length for this circuit? -
correct answer ✅200
A sign transformer draws 10 AMPS at 120 volts. It has a 92% power
factor. The power consumed by the secondary circuit is _______
watts. -
correct answer ✅1104
, Electrical Code Test Exam Questions
& Answers (Grade A+)
A formula for determining the maximum available short circuit
current (ISCC) available at the secondary of a transformer when the
primary source is assumed to be of unlimited capacity is:
ISCC=100%/Zx% x Is, where Is= full load rating; Xx = rated
impedance voltage % of a given transformer. What is the short
circuit ISCC available in the transformer secondary? 75Kva, 240V, 1-
phase, impedance=2% ISCC= ____? -
correct answer ✅15,625 amps
Given: A 120/208V, 3 phase service is fed with a single size
500KCMil, copper conductor for each phase. The main circuit
breaker is rated at 300 amps. A copper grounding electrode
conductor from the main service pan el to the cold water pipeline
must be at least size ______. -
correct answer ✅1/0 AWG
A motor controller is installed with the expectation that it will be
sumerged occasionally for short periods of time. According to NEC,
the controller shall be installed in an enclosure type number. -
correct answer ✅6
What is the total resistance in this circuit? -
correct answer ✅6 ohm
& Answers (Grade A+)
Which item below would be considered part of the company
general overhead? -
correct answer ✅Telephone at the contractor's office
What is not included in Company Overhead? -
correct answer ✅Body Bonds
What does JIT stands for on a job site in regards to deliveries? -
correct answer ✅Just in time
What La One Call is used what determines their start and stop
points for marking? -
correct answer ✅The area the contractors designates that he is
working in
Normally, the best way to keep costs down is to have deliveries
made? -
correct answer ✅At the time the materials are needed (JIT)
Under water lighting fixtures are in the walls of the permanently
installed swimming pool. Disregard NEC exceptions. The top of the
fixture lens must be at least _________ inches below the normal
,Electrical Code Test Exam Questions
& Answers (Grade A+)
water level of the pool. -
correct answer ✅18
Given: An installation for which the NEC requires a second "made"
grounding electrode to supplement the first. What is the minimum
distance allowed between these two electrodes? -
correct answer ✅6'
A 120/208 volt three phase service is fed with a single size 500
kcmil copper conductors for each phase. A copper grounding
electrode conductor from the main service panel to the cold water
pipe line mist be at least size _________. -
correct answer ✅1/0 AWG
A metal raceway protects a grounding electrode conductor. The
raceway is connected on one end to a panel that has concentric
knock-outs. What is the minimum grounding requirement for this
GEC raceway? -
correct answer ✅It requires a bounding jumper to the GEC at both
ends of the raceway
A one family dwelling contains a 200 amp single phase service
panel, supplied with a #2/0 THW conductor. A minimum size
,Electrical Code Test Exam Questions
& Answers (Grade A+)
bonding jumper for this service is _________. -
correct answer ✅#6 copper
Which of the following is NOT an approved method of connecting a
grounding conductor to a grounding electrode? -
correct answer ✅Soldering
Given: A circuit has resistive loads of 4 Ohms, and 20 Ohms
connected in parallel. What is the combined total resistance? -
correct answer ✅2 Ohms
The largest available conductor for an electrical installation has a
resistance of 1.5 Ohms per 1,000 feet. To meet the voltage drop
specifications a maximum resistance of the current is .3 Ohms.
What is the maximum combined conductor length for this circuit? -
correct answer ✅200
A sign transformer draws 10 AMPS at 120 volts. It has a 92% power
factor. The power consumed by the secondary circuit is _______
watts. -
correct answer ✅1104
, Electrical Code Test Exam Questions
& Answers (Grade A+)
A formula for determining the maximum available short circuit
current (ISCC) available at the secondary of a transformer when the
primary source is assumed to be of unlimited capacity is:
ISCC=100%/Zx% x Is, where Is= full load rating; Xx = rated
impedance voltage % of a given transformer. What is the short
circuit ISCC available in the transformer secondary? 75Kva, 240V, 1-
phase, impedance=2% ISCC= ____? -
correct answer ✅15,625 amps
Given: A 120/208V, 3 phase service is fed with a single size
500KCMil, copper conductor for each phase. The main circuit
breaker is rated at 300 amps. A copper grounding electrode
conductor from the main service pan el to the cold water pipeline
must be at least size ______. -
correct answer ✅1/0 AWG
A motor controller is installed with the expectation that it will be
sumerged occasionally for short periods of time. According to NEC,
the controller shall be installed in an enclosure type number. -
correct answer ✅6
What is the total resistance in this circuit? -
correct answer ✅6 ohm
