Electrical Circuits and Safety Quiz

What do "Demand factors" refer to?

• The total possible current required

• The maximum load a system can handle

• The actual needs of a building to operate

• The average load over time

What determines the minimum number of branch circuit spaces you must provide?

• The size of the panelboard

• The minimum ampacity of the service conductors

• The type of circuit breaker

• The number of outlets

What is the purpose of an arc-fault interrupter?

• To connect to the main service breaker

• To provide lighting

• To protect receptacle branch circuit receptacles

• To increase voltage

What is the main consideration when selecting a panelboard?

• The color of the panelboard

• The size of the panelboard

• The maximum allowable ampacity of its bus bars

• The brand of the panelboard

What is the minimum height for a distribution panel from the floor according to the document?

• 3 feet

• 4 feet

• 5 feet

• 6 feet

According to the National Electrical Code, what is a panelboard?

• A type of light fixture

• A type of enclosure for overcurrent protection devices

• A type of circuit breaker

• A type of electrical wire

Which of the following is NOT a characteristic of panelboards according to the National Electrical Code?

• Used to control light, heat, or power circuits

• Placed in a cabinet or cutout box

• Mounted in or against a wall

• Accessible only from the back

How many full size circuit breakers can a 16/16 panel accommodate?

• 8

• 12

• 16

• 20

According to NEC® Article 408.36, what must a distribution panel have?

• A voltage regulator

• An overcurrent protection device

• A surge protector

• A backup generator

What is the characteristic of a main breaker load center?

• Overcurrent protection is remote

• Overcurrent protection is an integral part

• No overcurrent protection

• Overcurrent protection is optional