RSI Residential Wiring Exam with
complete solutions
The _______ screws on an electrical outlet are used to connect the neutral to the
device. - Answer -Silver Screws
The voltage between L1 and L2 in a residential service is what? - Answer -240V
Once a wire is stripped and shaped into a hook, in what direction is it placed on the
terminal screw of a device? - Answer -Clockwise
A common name for non-metallic sheathed cable is? - Answer -Romex
What are the three most common device symbols used in a residential electrical
drawing? - Answer -Ceiling Light Outlet, Receptacle, and Switch
A neutral wire from the SEP connects to what color screws on a receptacle? - Answer -
Silver
What color is the line conductor in a 14-2 AWG, coming from the Service Entrance
Panel? - Answer -Black
Neutral is what color in a non-metallic sheath cable? - Answer -White
What happens in a series circuit to voltage and current? - Answer -Current remains the
same and voltage divides
What color screws on a receptacle do you connect the black line wire to? - Answer -
Brass
What is another name for Ungrounded Conductor? - Answer -Hot/Line
Wire nuts work with solid and _________________. - Answer -Stranded Wires
What is the difference between a split receptacle and normal outlet? - Answer -A split
receptacle can be controlled from a switch while remaining live.
, What would the maximum ampacity of plug fuses be if the fuses had a hexagonal (six
sided shape) window on the fuse? - Answer -15 AMPs or less
On Romex cable marked 14/3 AWG, what do these numbers and letters mean? -
Answer -Size of wire and number of conductors with ground
What are the three most common symbols found on a blueprint? - Answer -Switch,
Ceiling outlet and Duplex Receptacle
When using aluminum wire instead of copper, a #12 AWG copper conductor would
have to be replaced with what size aluminum conductor? - Answer -#10 AWG
What is the maximum number of #14 AWG wires in a 3"x2"x2" device box? - Answer -5
What is the volume allowance for a #12 wire? - Answer -36.9 cm³ 2.25in³
How many #14 wires can you put in a 4"x1½ square metal box? - Answer -10
You have a box that has a volume of 22.5 cu in. How many wires can you have in that
box? - Answer -11
A 3"x2"x2" device box has a volume of ________? - Answer -10cu in
Electrical wire size is expressed in _________? - Answer -AWG
What is the rule of thumb for a neutral conductor? - Answer -Neutral is always white, but
white is not always neutral.
What or who determines the circuit breaker size needed to protect a circuit? - Answer -
Wire Size
The current capacity of a conductor depends on two things. What are they? - Answer -
The size of the wire and the material it is made of.
When using aluminum in place of copper in branch circuits, the aluminum conductors
must be sized how many trade sizes larger than copper conductors? - Answer -One
trade size larger
A safety device which automatically shuts off power in the event of an overload or short
and can be reset is called a what? - Answer -Circuit Breaker
A home that measures 35'x48' would have how many square feet? - Answer -1680
square feet
In a 1680 square foot home, how many general purpose lighting circuits would be
required? - Answer -3
complete solutions
The _______ screws on an electrical outlet are used to connect the neutral to the
device. - Answer -Silver Screws
The voltage between L1 and L2 in a residential service is what? - Answer -240V
Once a wire is stripped and shaped into a hook, in what direction is it placed on the
terminal screw of a device? - Answer -Clockwise
A common name for non-metallic sheathed cable is? - Answer -Romex
What are the three most common device symbols used in a residential electrical
drawing? - Answer -Ceiling Light Outlet, Receptacle, and Switch
A neutral wire from the SEP connects to what color screws on a receptacle? - Answer -
Silver
What color is the line conductor in a 14-2 AWG, coming from the Service Entrance
Panel? - Answer -Black
Neutral is what color in a non-metallic sheath cable? - Answer -White
What happens in a series circuit to voltage and current? - Answer -Current remains the
same and voltage divides
What color screws on a receptacle do you connect the black line wire to? - Answer -
Brass
What is another name for Ungrounded Conductor? - Answer -Hot/Line
Wire nuts work with solid and _________________. - Answer -Stranded Wires
What is the difference between a split receptacle and normal outlet? - Answer -A split
receptacle can be controlled from a switch while remaining live.
, What would the maximum ampacity of plug fuses be if the fuses had a hexagonal (six
sided shape) window on the fuse? - Answer -15 AMPs or less
On Romex cable marked 14/3 AWG, what do these numbers and letters mean? -
Answer -Size of wire and number of conductors with ground
What are the three most common symbols found on a blueprint? - Answer -Switch,
Ceiling outlet and Duplex Receptacle
When using aluminum wire instead of copper, a #12 AWG copper conductor would
have to be replaced with what size aluminum conductor? - Answer -#10 AWG
What is the maximum number of #14 AWG wires in a 3"x2"x2" device box? - Answer -5
What is the volume allowance for a #12 wire? - Answer -36.9 cm³ 2.25in³
How many #14 wires can you put in a 4"x1½ square metal box? - Answer -10
You have a box that has a volume of 22.5 cu in. How many wires can you have in that
box? - Answer -11
A 3"x2"x2" device box has a volume of ________? - Answer -10cu in
Electrical wire size is expressed in _________? - Answer -AWG
What is the rule of thumb for a neutral conductor? - Answer -Neutral is always white, but
white is not always neutral.
What or who determines the circuit breaker size needed to protect a circuit? - Answer -
Wire Size
The current capacity of a conductor depends on two things. What are they? - Answer -
The size of the wire and the material it is made of.
When using aluminum in place of copper in branch circuits, the aluminum conductors
must be sized how many trade sizes larger than copper conductors? - Answer -One
trade size larger
A safety device which automatically shuts off power in the event of an overload or short
and can be reset is called a what? - Answer -Circuit Breaker
A home that measures 35'x48' would have how many square feet? - Answer -1680
square feet
In a 1680 square foot home, how many general purpose lighting circuits would be
required? - Answer -3
