In a solar power system, the flow of electrical current is measured by Amps. The movement of electrical charge amount in a given time through a cross-section is represented by amps. Amps is the short form of amperes. When silicon atom electrons are knocked out from sunlight photons it generates amps. The value of amps depends upon the factors like.
Connect the adapter cables from the charging controller to the solar panel. Measure the power output. Bring the solar panel outside, and position it in the sun. Your solar panel’s output will be measured by the watt meter, which will turn on immediately.
Note: You can more easily measure PV current by using a clamp meter, which I discuss below in method #2. That’s right — you can use a multimeter to measure how much current your solar panel is outputting. However, to do so your solar panel needs to be connected to your solar system.
How to Measure Solar Panel Output with a DC Power Meter This is a DC power meter (aka watt meter): You can find them for cheap on Amazon. Connect one inline between your solar panel and charge controller and it’ll measure voltage, current, wattage, and more. Here’s how to use one. 1. Crimp the MC4 connectors on, if needed.
Find the PV voltage value by accessing the charge controller’s display. The PV voltage, for instance, might be 15.2V. On the display screens, locate the PV current value. For instance, the PV current that is presented might be 4.5A. Calculate the solar panel wattage by multiplying the PV voltage by the PV current.
This means that when this solar panel is producing 100 Watts of power under Standard Test Conditions, It will be generating 5.62 Amps of current. On the other hand, the Short Circuit Current rating (Isc) on a solar panel, as the name suggests, indicates the amount of current produced by the solar panel when it’s short-circuited.