Solar Array Junction Box and Its Types
The Solar Panel junction boxes are usually pre-installed on the back of the solar module.
The role of photovoltaic junction boxes is to connect solar panels with other related photovoltaic electrical components and to protect them from environmental impacts. The cable connects to the internal diode. This is an easy way to connect the panels. Solar panel junction box diode guarantees the current to flow in one direction, preventing the current from returning to the panel.
There are many types of solar junction boxes.
The junction boxes can be connected in two ways： Soldering/Potting and Clamping.
soldering/potting is connected by using glue,， while the clamping is connected through a simple clamping mechanism。 The solar array junction box price of those two methods is fairly equal.
Can we have too numerous junction boxes?
There are no limits on the number of junction boxes (without bias) in any particular circuit.
How numerous cables can go into a junction box?
Choose the Right Junction Box. For illustration, the lowest 2-by-4-by-1-1/ 2- inch-deep box can comfortably splice only two lines (four or five conducting cables), while the largest 4-by-4-by-2-1/ 8- inch-deep boxes can handle as numerous as four to six lines (up to 18 individual conducting cables).
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