These requirements cover small Wind Turbine Generating Systems (WTGS) and electrical subassemblies. Small WTGS are defined as wind turbines with a rotor swept area of 200 m2 (16 meters rotor diameter) or less with an output terminal voltage of 600 Volts or less. These units are intended for use in stand-alone (not grid-connected) or utility interactive applications. Utility-interactive WTGS are operated in parallel with an electric power system (EPS) to supply power to common loads. The WTGS power@ control and protection systems are evaluated only to the extent that they function within the manufacturer's specified limits and response times. These control and protection functions are evaluated with respect to risk of electric shock and fire. It is intended that the electrical subassemblies that address power transfer control and protection functions evaluated per this document are to be coordinated with the mechanical and structural evaluation of the WTGS in accordance with the IEC 61400 series documents or Germanischer Lloyd WindEnergie GMBH: Guideline for the Certification of Wind Turbines documents. These requirements do not cover: a) WTGS intended for off-shore installation; b) Mechanical or structural integrity of the WTGS or subassemblies; c) Coordination of electrical and mechanical systems to maintain the WTGS within its safe mechanical and structural limits; d) Mechanical loading of ladders@ scaffolding@ personnel tie offs@ or other personnel loadbearing functional parts. The products@ systems@ and subassemblies covered by these requirements are intended to be installed in accordance with the National Electrical Code@ ANSI/NFPA 70. Large Wind Turbine Generating Systems (WTGS) and electrical subassemblies ?C defined as wind turbines with a rotor swept area larger than 200 m2 (16 meters rotor diameter) ?C are covered in the Standard for Wind Turbine Generating Systems ?C Large@ UL 6141.