Step 4: Connecting Pv Modules To Module Support Rail Assemblies - Tamarack Solar LTP HW Mount Series Installation Manual

Step 4: Connecting PV modules to Module Support Rail assemblies:

The LTP LCR/124HW mount, with the added High load Kit, utilizes three PV modules per column,
two columns side by side. For assembly purposes, attach the middle PV modules only at this point,
one to each pair of Module Support Rails, as shown in Detail F. This will establish the spacing
between the Module Support Rails based on the mounting hole locations in the PV module
frames, which vary by brand and model.
NOTE: For ease of wiring and wire management of the PV modules, it is best to have as much of
the output wiring as close to the inside, near the pole. PV module brands and models can differ
in the location of their output wiring junction boxes. Additionally, the proper location of the
junction boxes on the mount may differ depending on whether the modules are to be wired in
series or parallel, or a combination of series and parallel. This depends on the intended use for
the solar array. Be sure to plan this out beforehand.
If the PV modules that you are using have a single wiring junction box (containing wiring for
both positive and negative connections to it) at one end of the back of the modules, it is best if
all of the modules are mounted on the racking with these junction boxes towards the inside
(closest to the pole), in each of the two module columns. Since during later assembly of the two
columns of modules to the Cross Rails, the 56” sections of the Module Support Rail assemblies
need to be on the north side of the pole (higher side when tilted), make sure that while
assembling (per the following instructions) that you attach the center PV module to one pair of
Module Support Rail assemblies with the module’s junction box on one side of the rails, and
assemble the second set with the center module’s junction box on the other side of the rails, in
relation to the 56” rail sections of each Module Support Rail sub assembly.
If the PV modules have two wiring junction boxes in the middle of the module (one positive and
one negative), the best arrangement for wiring will vary depending on usage. Be sure to plan
out your wiring options before attaching the modules to the Module Support Rails. If the
modules are to be wired in series strings, make sure that the wire leads are long enough to
reach between modules
You will need to make one left side and one right side sub assembly (left and right determined by
viewing from the south side of the pole). The doubled Module Support Rail assemblies will need
to be located to the inside (pole side) in both columns and the 56” module support rail sections
need to be on the north side of the pole as shown in Detail F. Be sure to place the PV modules on
the rails with their wiring junction boxes on the proper side based on the wiring note above.
9
LTP HW Mount Series