Definitions. As used in this chapter, the following terms shall have the meanings indicated:
COMMERCIAL WIND ENERGY SYSTEM
A wind energy system that is operated primarily (51% or more) to put energy into the electric grid, and/or has a nameplate capacity of more than 50 kilowatts (kW), and/or a total height of more than 175 feet, and/or a blade length of more than 30 feet.
ELECTROMAGNETIC INTERFERENCE (EMI)
The interference to communication systems created by the scattering of electromagnetic signals.
NONCOMMERCIAL WIND ENERGY SYSTEM
A wind energy system that is operated primarily (51% or more) for on-site (may be for more than one parcel) consumption, and has a nameplate capacity of 50 kW or less, and a total height of 175 feet or less, and a blade length of 30 feet or less. These are also defined as wind energy conversion systems (WECS) or small wind energy production facilities.
ROTOR DIAMETER
The largest diameter formed by the blades when assembled and mounted on the wind energy system.
SHADOW FLICKER
The alternating pattern of sun and shade caused by wind tower blades casting a shadow.
STRAY CURRENT
Is the inappropriate application of current to the ground or earth. For the purpose of this article it is the measurable addition of current to ground resulting from improper installation or deterioration of the electrical portion of a wind energy system. The National Electrical Safety Code set the conditions that grounding connection points shall be so arranged that under normal circumstances there will be no objectionable flow of current over the grounding conductor. The National Electrical Safety Code set the conditions that earth (ground) should not be part of a supply circuit for both safety and service reasons. The most current revision of the National Electrical Safety Code shall apply.
TOTAL HEIGHT
The vertical distance from ground level to the tip of a wind turbine blade when the tip is at its highest point.
WIND ENERGY SYSTEM
Equipment that converts and then stores or transfers energy from the wind into usable forms of energy and includes any base, blade, foundation, generator, nacelle, rotor, tower, transformer, turbine, vane, wire, substation, maintenance or control facilities, or any other components used in the system. A wind energy system can consist of one or more wind towers. Wind energy systems do not include small lawn decorations, pond aerators, or remaining portions of mechanical water pumping windmills.
WIND TOWER
The monopole, freestanding, or guyed structure that supports a wind turbine generator.