An important feature in the construction of solar modules is the junction box. Attached to the rear of the solar panel, it serves several important functions. The junction box is often an overlooked piece of the solar panel. Usually, pre-installed on the backside of a solar module, installers pay it little mind until connecting panels. A junction box has bypass diodes that keep power flowing in one direction and prevent it from feeding back to the panels. Every string is protected by a diode. The diode is the gateway that allows an endless stream of power. If part of a solar panel is shaded, that string will want to consume power, reversing the flow of electricity. Diodes inside the junction box prevent that from happening.

Alvern Cables has a range of high quality and reliable Hensel combiner, distribution and junction boxes for your solar applications.