Reading Solar Panel Labl

They have too high of a voltage to charge a 12v battery bank with a traditional charge controller but too low of a voltage to charge a 24v.

Reading solar panel labl.

The example photo of a solar pv label indicates name and address of the manufacturer and the solar module type blackened. On the lower part of the label there are icons of all the certifications this specific panel has passed. The solar panel description usually starts with the name of the manufacturer then the category of solar module and afterward the solar panel wattage. The max power rating in watts that your solar panels are rated at is the figure that everyone quotes when talking about panel size.

Right below the electrical ratings indicate the major performance output characteristics of the panel. Any bigger than this and it would be difficult to install them on residential roofs where space can be an issue. Solar cells are typically about 4 5 wide by 4 5 tall. If the installer or salesperson talks aout a 190w or 250w panel they are talking about the max power rating of the panels.

Commercial solar panels have 72 cells but they are much too big for residential roofs. Here are a couple of examples. Grid tie solar panels with 60 cells are often referred to as 20v nominal panels like the solarworld sunmodule 290w solar panel.