These requirements cover flat-plate photovoltaic modules and panels intended for installation on or integral with buildings@ or to be freestanding (that is@ not attached to buildings)@ in accordance with the National Electrical Code@ NFPA 70@ and Model Building Codes.These requirements cover modules and panels intended for use in systems with a maximum system voltage of 1000 V or less.These requirements also cover components intended to provide electrical connection to and mounting facilities for flat-plate photovoltaic modules and panels.These requirements do not cover: a) Equipment intended to accept the electrical output from the array@ such as power conditioning units (inverters) and batteries; b) Any tracking mechanism; c) Cell assemblies intended to operate under concentrated sunlight; d) Optical concentrators; or e) Combination photovoltaic-thermal modules or panels.?