Hi All, This is my first solar system. There's about 2.4Kw of panels on top a shipping container (photo #1) . I want a Combiner Box externally mounted for quick shutdown of panels prior to the DC outputs entering into the container (photo #2). The problem is the combiner box I purchased (WATTS247), ALL THE
PV STRINGS AND DC OUTPUT are designed to exit the box along bottom side subjecting them to exposure. The majority of the boxes I see online have
this configuration but this seems illogical. All videos demonstrating these type of boxes are shown on a nice sterile indoor workbench. But videos showing
actual mounting of outdoor combiner boxes always have their wiring shuttled thru conduit, only wires mounted on rooftops or attics far away from normal passerby would use this type of box and maybe some types of ground installations. The problem I see with that, is that the Purpose of this box is by definition to have a quick shutdown (fire dept. ect.) which REQUIRE it to be both visible AND easily within hands reach without having to climb onto a roof or into an attic.
I plan to punch a hole thru the back of the box and run the DC output wires into the container but the construction of the box makes this awkward although doable.
I have placed a vertical piece of conduit to shield the majority of the vertical PV strings from touch, but there will be a bottom U shaped loop where the wires
are exposed prior to entering the waterproof grommets. I suppose this is ok? If it is, why don't I see a single photo anywhere on the internet showing a professionally
installation using this type of box mounted to a side wall anywhere? Making the entire path from box to roof thru conduit is very awkward and would require a differnt box. I bought this box as it also had surge suppression, breakers and the terminal blocks. Thanks in advance.
PV STRINGS AND DC OUTPUT are designed to exit the box along bottom side subjecting them to exposure. The majority of the boxes I see online have
this configuration but this seems illogical. All videos demonstrating these type of boxes are shown on a nice sterile indoor workbench. But videos showing
actual mounting of outdoor combiner boxes always have their wiring shuttled thru conduit, only wires mounted on rooftops or attics far away from normal passerby would use this type of box and maybe some types of ground installations. The problem I see with that, is that the Purpose of this box is by definition to have a quick shutdown (fire dept. ect.) which REQUIRE it to be both visible AND easily within hands reach without having to climb onto a roof or into an attic.
I plan to punch a hole thru the back of the box and run the DC output wires into the container but the construction of the box makes this awkward although doable.
I have placed a vertical piece of conduit to shield the majority of the vertical PV strings from touch, but there will be a bottom U shaped loop where the wires
are exposed prior to entering the waterproof grommets. I suppose this is ok? If it is, why don't I see a single photo anywhere on the internet showing a professionally
installation using this type of box mounted to a side wall anywhere? Making the entire path from box to roof thru conduit is very awkward and would require a differnt box. I bought this box as it also had surge suppression, breakers and the terminal blocks. Thanks in advance.