4.APsystems Microinverter System Installation
4.3 Installation Procedures
4.3.1 Step 1 - Verify the grid voltage to match with microinverter rating
4.3.2 Step 2 - The AC bus distribution
a. The AC bus is arranged at the proper position of the inverter.
b. One end of the AC bus access junction box into power grid.
c. Wire the conductors of the AC bus: L - BROWN; N - BLUE; PE - YELLOW GREEN.
Wiring colour code can be different according local regulation, check all the wires of the
installation before connecting to the AC bus to be sure they match.Wrong cabling can
damage irreparably the microinverters, such an issue is not covered by the warranty.
4.3.3 Step 3 - Attach the APsystems Microinverters to the racking or the
PV module frame
a. Mark the location of the Microinverter on the rack, with respect to the PV module
junction box or any other obstructions.
b. Mount one Microinverter at each of these locations using hardware recommended by
your module racking vendor.
Option 1:
Figure 2
Option 2:
Figure 3
Prior to installing any of the microinverters, verify that the utility voltage at the point
of common connection matches the voltage rating on microinverter label.
Do not place the inverters (including DC and AC connectors) Where exposed to the sun,
rain or snow, even gap between modules. Allow a minimum of 3/4’’(1.5cm.) between the
roof and the bottom of the Microinverter to allow proper air flow.
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