Description

Combiner Box

A combiner box is an often-overlooked, yet essential part of most solar electric systems. The combiner box is an electrical enclosure which allows multiple of solar panels to be combined in parallel. For example, if you want to wire together two 12 Volt panels for your 12 Volt system, you will wire each panel’s output directly to terminals inside the combiner box. From the combiner box you can then run just one positive and one negative wire (in appropriate conduit) to the next system component, the charge controller. The combiner box will also house series string fuses or circuit breakers. These boxes are usually outdoor-rated, and meant for placement right next to the array or solar panels.