KSUN SOLAR is a solar power products supplier and portable power station manufacturer with quality solar power products.

How to Calculate Amps on a Solar Panel

by:KSUNSOLAR     2021-02-07
Solar panels generate electricity when placed in the sun.The current will flow out from the panel connected to the circuit.The power of how many amps the panel will produce depends on the power of the solar panel, the amount of sunlight that falls on the panel, and the properties of the circuit the panel is connected.Use a digital multimeter to calculate the amplifier generated when the panel is used for measurement.Check the back of the solar panel or consult the installation manual to find the maximum rated power (watts) of the panel ).You can also find the maximum power voltage Vmp in volts.Calculate the current generated by solar panels when generating maximum power.The current in the amps is calculated by dividing the power by the voltage.For example, if the rated power of the solar panel is 175 watts, the maximum power voltage Vmp is 23 watts.6 volts, then the current is calculated to be 175 watts divided by 23.6 volts, equal to 7.42 amps.This is the current produced by the full power of solar panels.Switch the dial to direct dial with a digital multimeter-current volts.When the solar panel is connected to the circuit, measure the voltage between the positive and negative terminals of the solar panel.Write down this value.Disconnect the solar panel from the circuit and switch the digital multimeter to the measurement resistor.Measure the resistance of the circuit with Ohm and write this value.Reconnect the solar panel to the circuit.By dividing the voltage by the resistor, the current in the amps that flow through the circuit is calculated.This relationship is Ohm\'s law (see ref 1 ).For example, if the measured voltage is 22.1 Volt, the circuit resistance is 3.2 ohms, divided by 22.1 by 3.2 ohms get 6.91 amps.This is the actual current generated by the solar panel, taking into account the amount of sunshine on the panel and the properties of the circuit.It is not dangerous to measure the voltage of a single solar panel.However, if you have several panels connected together, please consult a qualified technician to help you through the process.
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