ULC 1703

These requirements cover flat-plate photovoltaic modules and panels intended for installation on or integral with buildings, or to be free-standing (that is, not attached to buildings), in accordance with CSA C22.1, Safety Standard for Electrical Installations, Canadian Electrical Code, Part 1, and the National Building Code of Canada.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.”