Once you have built solar panels, it is necessary to check them to see that they are in working order before you can start using the panels. You need a meter known as an "amp meter to test solar panels. An amp meter has to be connected to the negative and positive part of the solar power panel and then the panel is activated to carry out the test. The meter measures using a measurement termed the "short circuit current", which is the quantity of current that the panels can generate. Amp meter that is used for the testing should be more powerful then the panels, otherwise an accident can occur.

Another method used for testing the extent of energy produced is to assess the diverse values of the resistors' voltage. To carry out this test, you require several resistors and a digital multimeter. After the multi-meter measures the DC power, the calculation are made using the "Current = Voltage / Resistance" equation. After which the performance graph for a panel can be made.

There are two types of current, Alternating Current (AC) and Direct Current (DC). DC is the continuous drift of a charge in one direction. The current mainly flows via a conductor like a wire. However, it might also flow via semi-conductors, insulators, ion beams or electron. DC is utilized for appliances with low voltage. In the case of solar power, a photovoltaic panel produces the DC power as soon as sun rays are collected.

After the solar power panel is build and the power has been collected and generated, the quantity of power produced needs to be calculated. This is necessary to check whether sufficient amount has been collected according to the requirements. To do this, you need to determine the amperage and voltage of a panel. Then, calculations have to be carried out on the basis of the formulae P=E*I, where P=Power, E=Voltage and I=Current, which calculates the wattage. This is required as the power all appliances might need from solar panels or batteries charged from solar panels is computed in watts.

Further, a solar energy system requires a solar charge controller for construction. The controller is employed to manage the power flowing from a PIV panel to the rechargeable batteries. A potentiometer enables us to alter the drift voltage. Most potentiometer contains a function that equalizes sporadic overcharging. It also contains a function that compensates temperature. That is it mechanically supplies the most excellent battery charge on the basis of the temperature. You can also compare the amp-hour evaluation of a battery with the greatest quantity of current produced. It is optional to carry out this test.