What is a solar roof top combiner box?
The solar synthesizer box is essentially a junction box for waterproof connection between the solar panel of your RV and the wires of the solar charging controller.
They combine the roof solar cable effectively, and also seal the roof to penetrate into the RV to keep everything watertight.
The solar combiner box on the roof of your RV is like the electrical junction box in the house, but it is designed for the type of wire used in the solar/photovoltaic system. Of course, it's waterproof. It contains several wires and cables entering from different ports and connects them closely to connect the output of several solar strings.
Therefore, the purpose of the combination box is to combine several solar panels or a string of solar panels into a bus.