Residential Wiring Mid Term Exam Prep

Which color is typically used for the ground wire in residential wiring in the United States?

• Red

• Green

• Black

• Blue

What is the standard voltage supplied to most residential outlets in the United States?

• 120 volts

• 240 volts

• 12 volts

• 480 volts

Which device is used to protect a residential circuit from overcurrent?

• Transformer

• Circuit breaker

• Light switch

• Outlet

Which wire typically carries the current from the power source to the load in a standard residential circuit?

• grounded conductor

• ungrounded conductor

• grounding conductor

• bonding wire

What is the minimum gauge of copper wire generally allowed for a 15-amp residential lighting circuit?

• 10 AWG

• 12 AWG

• 14 AWG

• 16 AWG

Which code sets the standard for safe electrical wiring in residential buildings in the United States?

• International Building Code

• National Electrical Code

• Uniform Plumbing Code

• Residential Safety Code

What is the function of a neutral wire in a residential electrical system?

• To provide a path for current to return to the source

• To protect against overcurrent

• To supply voltage to appliances

• To ground the system

Which of the following is NOT a common type of residential wiring method?

• Nonmetallic sheathed cable (NM)

• Armored cable (AC)

• Overhead busbar

• Conduit

What is the primary purpose of bonding in residential wiring?

• To increase voltage

• To ensure all metal parts are at the same electrical potential

• To reduce current

• To provide lighting

A homeowner wants to install a new 20-amp circuit for a kitchen appliance. What gauge of copper wire should be used according to the National Electrical Code?

• 14 AWG

• 12 AWG

• 10 AWG

• 8 AWG