Electrical Codes

What is the primary purpose of electrical codes?

• To ensure safety and prevent electrical hazards

• To increase the cost of electrical installations

• To make electrical systems more complex

• To limit the use of renewable energy sources

Which organization is responsible for the National Electrical Code (NEC) in the United States?

• IEEE

• NFPA

• OSHA

• UL

What does the term 'ampacity' refer to in electrical codes?

• The voltage rating of a conductor

• The maximum current a conductor can carry safely

• The resistance of a conductor

• The power factor of a circuit

In electrical codes, what is the significance of a ground fault circuit interrupter (GFCI)?

• To increase the voltage in a circuit

• To protect against electrical shock

• To reduce the current in a circuit

• To enhance the power factor

According to electrical codes, what color is typically used for grounding wires?

• Red

• Black

• Green

• Blue

What is the role of a circuit breaker as per electrical codes?

• To increase the current in a circuit

• To protect an electrical circuit from damage due to overload or short circuit

• To convert AC to DC

• To measure the voltage in a circuit

Which of the following is a common requirement in electrical codes for residential wiring?

• Use of aluminum wiring

• Installation of arc-fault circuit interrupters (AFCIs)

• Use of uninsulated wires

• Installation of DC circuits only

What is the purpose of a fuse in an electrical circuit according to electrical codes?

• To provide a path for current flow

• To protect the circuit by breaking the connection in case of overload

• To increase the circuit's resistance

• To convert electrical energy to mechanical energy

In electrical codes, what is the minimum height for electrical outlets in residential buildings?

• 6 inches from the floor

• 12 inches from the floor

• 18 inches from the floor

• 24 inches from the floor

What is the standard voltage for residential electrical systems in the United States as per electrical codes?

• 120/240 volts

• 110/220 volts

• 100/200 volts

• 130/260 volts