Which statement best describes NEC's stance on energy efficiency?

• A. It requires outdated equipment
• B. It ignores energy efficiency
• C. It discourages efficiency
• D. It allows and encourages efficient equipment and practices while maintaining safety and performance requirements

Answer: (D)

The main idea is that the NEC balances safety with practicality, allowing energy-efficient choices as long as safety and performance requirements are met. The code encourages using efficient equipment and practices because they help reduce energy use, operating costs, and heat, but only when those choices don’t compromise electrical safety or the reliability of the installation.

So, the best statement is that NEC permits and promotes efficient devices and controls while still upholding safety standards. This means you can select energy-saving lighting, motors, and control systems, and design installations that minimize energy waste, as long as everything complies with safety and performance rules.

Choices that imply NEC forces outdated equipment, ignores energy efficiency, or discourages efficiency aren’t consistent with how the code is applied in practice, which supports efficiency within safe, reliable electrical installations.