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Stretch a mason line along the top edge of the row of solar module assemblies to verify that
all of the assemblies are at the same height (Figure 39). Shim the solar module assemblies if
their height needs to be adjusted.
.
Step 4b
:
Make Electrical Connections between Solar Module Assemblies…
Wiring connections
between solar module assemblies are dependent on whether the solar module assembly has
an integrated AC microinverter or a DC optimizer. Figure 40 (next page) shows the module-
to-module connection with a DC optimizer.
Typically, DC optimizers are simply daisy-chained together into DC strings. Route the home
run wire (see Figure 71, page 49) up and around the planned array area, so as not to get in
the way of subsequent runs.
Figure 38: Interlocking between the S olar Module Assemblies
1
2
3
Figure 39: Ensuring that the S olar Module Assemblies are aligned
Mason Line
along the Top
Edge of Solar
Module
Assemblies
