The term photovoltaic (PV) refers to a system that converts light into electricity using semiconductor materials, resulting in a photovoltaic effect. PV systems exist in a variety of sizes and forms, so understanding PV components and how they’re used is required before PV testing.
Electroluminescence testing is a non-invasive approach for detecting microcracks on the spot and determining the root cause, which is important in warranty disputes. EL testing is done on-site, and no modules need to be uninstalled in order to test.
Connect the multimeter to the solar panel’s positive cable. Remove the towel from your solar panel (or turn it face up) and use your multimeter to check the amperage to see how much current it is producing.