What should be based on when purchasing PV Junction Box

What should be based on when purchasing PV Junction Box?I believe that the choice of the most scientific basis should be based on the current cell should show the voltage variation with light intensity, you must understand where the components used in the production, in this region when the light is much the strongest, and control cells with the light intensity of the current curve, the maximum possible current investigation, and then select the rated current of the junction box should be more scientific.

Components as well as how many watts, give me so many watts with a junction box is inaccurate to say, if you choose to do 156 * 156 film components, whether you have a few slices of components, all current the connection component cells are connected in series, so the performance of solar cells has been determined the size of the component of current, voltage depends on the component number of cells in series, so the current size of the component is to choose connection box of important parameters, open circuit voltage is not no use, just refer to it, because only the open-circuit voltage on the diode reverse voltage, satisfy the general case, because the principle of crystalline silicon cells is low voltage and high power current, so be sure to pay attention to the current junction box, very, very important parameter! Junction box is an important stability and reliability to meet the safe use of a long time, so wiring and diode heat thermostat is essential, and only the low temperature section, good heat dissipation structure of the junction box junction box to be able to guarantee long-term work reliable security.