Basics of Home Electrical Wiring Quiz

What is the purpose of a service head in home electrical wiring?

• To regulate the temperature in the house

• To supply power to lights and appliances

• To connect the home to the water supply

• To provide a connection for internet services

Which wire color is typically used for grounding?

• Black

• Red

• Green

• Blue

What does MCB stand for in electrical terms?

• Main Circuit Board

• Miniature Circuit Breaker

• Maximum Current Breaker

• Multiple Cable Box

What is the most common gauge size for residential electrical work?

• 8-gauge

• 14-gauge

• 6-gauge

• 10-gauge

What is the function of a neutral wire?

• To regulate the temperature

• To act as a backup power source

• To provide internet connectivity

• To carry power back to the service panel

What should you do if a circuit breaker trips repeatedly?

• Use a higher voltage appliance

• Contact a licensed electrician

• Replace it with a new one

• Ignore it

What is a kilowatt-hour (kWH)?

• A measure of electrical resistance

• A type of electrical wire

• A unit of energy equal to 3600 kilojoules

• A unit of power

What is the main risk of using white or gray wires?

• They can cause fires

• They may still carry power and pose a risk of electrocution

• They are not durable

• They are expensive

What is the purpose of a junction box?

• To provide internet access

• To increase the voltage

• To protect wire connections from damage

• To store electrical tools

What type of cable is most commonly used in modern homes?

• Metallic cable

• Nonmetallic (NM) cable

• Coaxial cable

• Fiber optic cable