Each drawing comes with a legend that clarifies these symbols. Furthermore, technical specifications outline materials, performance metrics, and safety standards, which are crucial for successful installation and operation. UNDERSTANDING THE COMPONENTS AND SYMBOLS. If you're working on a single solar site in the U., whether a rooftop in California, a commercial warehouse in Texas, or a ground-mounted farm in the Midwest, then the CAD drawings are your blueprint. Get them right and your installation rolls smoothly; overlook something and you'll feel it, in. . Reading photovoltaic solar energy construction drawings involves interpreting complex technical documents that illustrate the design and layout of solar energy systems. Analyze installation details, 4. . e sun to draw or trace a design onto paper. It"s a great way to introduce renewable e ltered in the Text tab of the format panel. To move objects, fi e basic components of an electrical system. In addition to the common electrical engineering symbols, the library includes symbols such as solar cells, photovoltaic panels, solar collectors, inverters, etc. Also known as a solar array layout or solar PV layout,a solar panel layo t drawing is a key component of a solar plan set.