Electrical Practice Exam Questions With
Answers.
Flexible metal conduit is sometimes referred to as? - ANSWER- Greenfield
What do you look for to determine if a switch or receptacle is acceptable for copper and
aluminum wiring? - ANSWER- CO/ALR
What type of receptacle should not be used with aluminum branch circuits wiring any
longer? - ANSWER- CU/AL
What type of wire nut is not appropriate for aluminum wire? - ANSWER- Conventional
What is another name for a grounding rod? - ANSWER- Electrode
What is the purpose of a circuit breaker? - ANSWER- Interruption of electrical flow
What are two examples of automatic circuit breakers? - ANSWER- Fuses and Breakers
What is another term for NM sheathed cable? - ANSWER- Romex
Minimum distance of a GFCI from a bathtub or shower: - ANSWER- 0 by the code (36
by the brown book, but on exam it should be 0)
Maximum distance of an outlet from a lavatory/basin: - ANSWER- 3'
Which is deficient? - ANSWER- Unused opening that has been taped
A device designed to open and close a circuit by non-automatic means and applied
within its rating to open the circuit automatically when predetermined over-current is
called? - ANSWER- Circuit Breaker
Type NM wiring shall be supported a maximum of _______ on center. - ANSWER- 4.5
feet
At a kitchen counter, countertop receptacle outlets shall be installed within a maximum
horizontal distance of _______ from any point along the wall to an outlet. - ANSWER-
24 inches
Which of the following is a good conductor? - ANSWER- Copper,Aluminum & Silver (All
of the above)
Is the service drop overhead or underground? - ANSWER- Overhead
, Are service laterals overhead or underground? - ANSWER- Underground
The drip loop is typically part of the service drop. - ANSWER- False (It is part of the
service entrance)
Which of the following is a reliable way to identify the service size? - ANSWER- The
service entry conductor size
Which of the following is a safety issue? - ANSWER- The main fuses have a higher
rating than the service entrance wire.
How should the feeder wires to a sub-panel from the main panel ideally be protected? -
ANSWER- Fuses should be provided at the main panel
Which of the following wires are stranded? - ANSWER- #8, #6 (Both C and D)
Bonding the gas piping to the supply plumbing system mean that: - ANSWER- Any stray
electrical current will not cause arcing, which otherwise could ignite the gas
Polarity occurs when? - ANSWER- Electrical receptacle is connected (properly)
What is required to be installed in unfinished basements or exterior walls? - ANSWER-
GFCI
Report as deficient breaker boxes that are? - ANSWER- Installed in hazardous
location/safety issue
Antioxidants do what? - ANSWER- Prevent oxidation
Nicked wire causes what to happen? - ANSWER- ARC's
Can BX cable be used at receptacle outlets? - ANSWER- Yes, metal only. BX and
Greenfiled are interchangeable
18 gauge lamp cord where is it commonly used/installed? - ANSWER- Entry/Breakfast
table area/ dining room
15 AMP circuits are used where? - ANSWER- Branch circuit wiring
What is required for electrical receptacles for a swimming pool motor? - ANSWER-
Twist Lock and GFCI
How should 18 gauge speaker wire be installed in a ceiling? - ANSWER- Mounting
Bracket
Answers.
Flexible metal conduit is sometimes referred to as? - ANSWER- Greenfield
What do you look for to determine if a switch or receptacle is acceptable for copper and
aluminum wiring? - ANSWER- CO/ALR
What type of receptacle should not be used with aluminum branch circuits wiring any
longer? - ANSWER- CU/AL
What type of wire nut is not appropriate for aluminum wire? - ANSWER- Conventional
What is another name for a grounding rod? - ANSWER- Electrode
What is the purpose of a circuit breaker? - ANSWER- Interruption of electrical flow
What are two examples of automatic circuit breakers? - ANSWER- Fuses and Breakers
What is another term for NM sheathed cable? - ANSWER- Romex
Minimum distance of a GFCI from a bathtub or shower: - ANSWER- 0 by the code (36
by the brown book, but on exam it should be 0)
Maximum distance of an outlet from a lavatory/basin: - ANSWER- 3'
Which is deficient? - ANSWER- Unused opening that has been taped
A device designed to open and close a circuit by non-automatic means and applied
within its rating to open the circuit automatically when predetermined over-current is
called? - ANSWER- Circuit Breaker
Type NM wiring shall be supported a maximum of _______ on center. - ANSWER- 4.5
feet
At a kitchen counter, countertop receptacle outlets shall be installed within a maximum
horizontal distance of _______ from any point along the wall to an outlet. - ANSWER-
24 inches
Which of the following is a good conductor? - ANSWER- Copper,Aluminum & Silver (All
of the above)
Is the service drop overhead or underground? - ANSWER- Overhead
, Are service laterals overhead or underground? - ANSWER- Underground
The drip loop is typically part of the service drop. - ANSWER- False (It is part of the
service entrance)
Which of the following is a reliable way to identify the service size? - ANSWER- The
service entry conductor size
Which of the following is a safety issue? - ANSWER- The main fuses have a higher
rating than the service entrance wire.
How should the feeder wires to a sub-panel from the main panel ideally be protected? -
ANSWER- Fuses should be provided at the main panel
Which of the following wires are stranded? - ANSWER- #8, #6 (Both C and D)
Bonding the gas piping to the supply plumbing system mean that: - ANSWER- Any stray
electrical current will not cause arcing, which otherwise could ignite the gas
Polarity occurs when? - ANSWER- Electrical receptacle is connected (properly)
What is required to be installed in unfinished basements or exterior walls? - ANSWER-
GFCI
Report as deficient breaker boxes that are? - ANSWER- Installed in hazardous
location/safety issue
Antioxidants do what? - ANSWER- Prevent oxidation
Nicked wire causes what to happen? - ANSWER- ARC's
Can BX cable be used at receptacle outlets? - ANSWER- Yes, metal only. BX and
Greenfiled are interchangeable
18 gauge lamp cord where is it commonly used/installed? - ANSWER- Entry/Breakfast
table area/ dining room
15 AMP circuits are used where? - ANSWER- Branch circuit wiring
What is required for electrical receptacles for a swimming pool motor? - ANSWER-
Twist Lock and GFCI
How should 18 gauge speaker wire be installed in a ceiling? - ANSWER- Mounting
Bracket
