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.

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. Residential solar panels have 60 cells and so are about 3 feet wide by 5 feet tall. 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. Sw manufacturer solarworld 255 watt poly q cells q peak g4 1 product line of polycrystalline module 295. On the lower part of the label there are icons of all the certifications this specific panel has passed. Commercial solar panels have 72 cells but they are much too big for residential roofs.

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. Any bigger than this and it would be difficult to install them on residential roofs where space can be an issue.