How does the NEC address the use of energy-efficient lighting and equipment?

• A. It bans energy-efficient devices
• B. It mandates incandescent lighting only
• C. It prohibits LED lighting
• D. It allows and encourages efficient equipment and installation practices while meeting safety and performance requirements

Answer: (D)

Energy efficiency is welcomed by the NEC as long as safety and proper performance are maintained. The code focuses on safe electrical design and installation, not on dictating energy policy, so it does not ban efficient devices or mandate only incandescent lighting, nor does it prohibit LED lighting. Instead, it allows and encourages the use of efficient equipment and controls, provided they are properly listed, installed, and protected. This means you can use LEDs, occupancy sensors, dimming and other energy-saving features as long as the wiring, overcurrent protection, disconnects, and other safety requirements are met.