Which of the following is NOT typically considered a component of wind electric systems per NEC?

• A. Transformers
• B. Generators
• C. Alternators
• D. Inverters

Answer: (A)

The main idea is that a wind electric system is defined by the equipment that generates and conditions the power for use or interconnection. The turbine’s generator (often an alternator) is the primary source of electricity, and power conditioning devices like an inverter handle converting and shaping that power to be compatible with the grid or loads. A transformer, while it can appear in some installations to adjust voltage, is not treated as a standard, inherent component of the wind generation system itself under NEC. It’s more of a voltage-matching or distribution piece that may sit elsewhere in the interconnection chain or in the building’s electrical system rather than in the wind generator subsystem. Because it isn’t required for the wind generation and its immediate conditioning, it’s not typically listed as part of the wind electric system per NEC, making it the correct choice.