Distribution Panels Quiz

What is the main function of distribution panels in a building's electrical system?

• Providing lighting for the building

• Controlling the HVAC system

• Distributing power from the main service entrance to individual circuits

• Distributing water throughout the building

What component acts as the master switch in a distribution panel?

• Bus Bar

• Ground Terminal Bar

• Circuit Protective Devices

• Main Circuit Breaker

What is the purpose of the ground terminal bar in a distribution panel?

• To distribute power to individual circuits

• To carry the electrical current

• To protect against overloads

• To provide a common connection point for ground wires

Which devices protect branch circuits from overcurrent and short circuits in a distribution panel?

• Bus Bar

• Circuit Protective Devices

• Ground Terminal Bar

• Main Circuit Breaker

What is the purpose of a bus bar in a distribution panel?

• To distribute power to individual circuits

• To carry the electrical current

• To protect against overloads

• To provide a common connection point for neutral wires

What is the function of the main circuit breaker in a distribution panel?

• To distribute power to individual circuits

• To carry the electrical current

• To protect against overloads

• To provide a common connection point for ground wires

What is the purpose of an enclosure in an electrical system?

• To provide a safe barrier for electrical components

• To distribute power to individual circuits

• To carry the electrical current

• To protect against overloads

What is the purpose of a circuit protective device in an electrical system?

• To provide a safe barrier for electrical components

• To distribute power to individual circuits

• To protect the branch circuits from overcurrent and short circuits

• To carry the electrical current

Which of the following is not a composition of the distribution panel/panel assembly?

• Bus Bar

• Switch

• Enclosure

• Main Circuit Breaker

How does an enclosure contribute to electrical safety?

• By preventing unauthorized access to live parts

• By increasing the electrical current flow

• By reducing the voltage in the system

• By acting as a conductor for electricity