Installing Blocking Diode Solar Panel

The diode needs to have a voltage and amperage rating above that of the panel.

Installing blocking diode solar panel. In simplest terms a diode can be understood as a two terminal electronic device which allows electrical current to pass in one direction. If you have two 175 watt panels each at 42 volts you will need two 8 amp 45 volt diodes. Blocking diodes installation instructions sm 335 issue c 03 11 05 marlec engineering co ltd blocking diodes a blocking diode is required in each series string of solar modules between the modules and regulator battery to prevent current flowing back through the modules when the modules are shaded or during darkness. A blocking diode and bypass diode are commonly used in solar energy systems and solar panels.

In short as diode only passes current in one direction so the current from solar panels flows forward biased to the battery and blocks from the battery to the solar panel. Learn how and why blocking diodes and bypass diodes are used. In this video you will learn the importance of a bypass diode in solar panel learn how to connect a bypass diode to your own solar cells to improve the eff.