Reading Solar Panel Labl

If the installer or salesperson talks aout a 190w or 250w panel they are talking about the max power rating of the panels.

Reading solar panel labl.

Commercial solar panels have 72 cells but they are much too big for residential roofs. The max power rating in watts that your solar panels are rated at is the figure that everyone quotes when talking about panel size. Any bigger than this and it would be difficult to install them on residential roofs where space can be an issue. 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.

The example photo of a solar pv label indicates name and address of the manufacturer and the solar module type blackened. Solar cells are typically about 4 5 wide by 4 5 tall. It starts to get tricky when you move away from battery based solar systems and the 12v increments are no longer necessary. Right below the electrical ratings indicate the major performance output characteristics of the panel.

On the lower part of the label there are icons of all the certifications this specific panel has passed. Sw manufacturer solarworld 255 watt poly q cells q peak g4 1 product line of polycrystalline module 295. Grid tie solar panels with 60 cells are often referred to as 20v nominal panels like the solarworld sunmodule 290w solar panel.