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 reduce the lifespan of electrical appliances

Tags

NGSS.HS-ETS1-3

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 wire

• The current-carrying capacity of a wire

• The resistance of a wire

• The length of a wire

Tags

NGSS.HS-PS2-5

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

• Red

• Black

• Green

• Blue

In electrical codes, what is the minimum gauge wire typically used for residential lighting circuits?

• 10 gauge

• 12 gauge

• 14 gauge

• 16 gauge

What is the purpose of a circuit breaker according to electrical codes?

• To increase voltage

• To prevent overloading and short circuits

• To reduce current

• To enhance power factor

Tags

NGSS.HS-ETS1-3

Which of the following is a common requirement for electrical outlets in bathrooms according to electrical codes?

• Must be connected to a 240V circuit

• Must be GFCI protected

• Must be installed at least 6 feet above the floor

• Must be painted red

What is the role of a Ground Fault Circuit Interrupter (GFCI) as per electrical codes?

• To protect against electrical fires

• To prevent electrical shock

• To increase electrical efficiency

• To reduce electromagnetic interference

According to electrical codes, what is the maximum allowable voltage drop in a residential circuit?

• 1%

• 3%

• 5%

• 10%

What is the significance of the color coding of wires in electrical codes?

• To identify the manufacturer

• To indicate the type of insulation

• To ensure proper connection and safety

• To show the wire's age