How To Test A Solar Panel If It Works

Touch the multi meter s red positive lead to your solar panel s positive wire.

How to test a solar panel if it works.

This article describes how you can troubleshoot a solar system in basic steps. A standard solar panel also known as a solar module consists of a layer of silicon cells a metal frame a glass casing and various wiring to allow current to flow from the silicon cells silicon atomic 14 on the periodic table is a nonmetal with conductive properties that allow it to absorb and convert sunlight into electricity. As most solar panels are 12 volts the solar panel test methods are basically the same. Common issues are zero power and low voltage output.

Troubleshooting a solar pv system below i will describe basic steps in troubleshooting a pv array. Some exceptions may apply based on panel type. Quality solar panels are built and guaranteed to produce power for 25 years for that reason it s most likely that a problem is caused by a defect in system. Then touch the multi meter s black negative lead to your solar panel s negative wire.

Solar pv systems can chug away quietly for years without an issue but the figures above show it s not unusual for an unknown problem to cost you money. But don t get stuck on this detail. Set the meter to above 200 vcd to ensure you get the most accurate reading possible. Open circuit voltage can vary depending on your solar panel but the readings we are usually looking for are in the range of 15 to 23v.

You will want to ensure that you place the positive to positive and negative to negative when attaching your multimeter to the connection on the back of your solar panel. Simply touch the solar panel leads with the multi meter probes matching their corresponding polarity red to red black to black. What matters is how much sun your home gets year round. How do solar panels work to generate electricity.

E marine walks you through testing a solar panel s output to make sure it s performing correctly. If you re not sure how well your solar panels are working take our six simple steps to do a quick health check of your system. Don t rely on your electricity bill. When it s overcast your solar panels will likely operate at 10 to 25 of their rated capacity.