APsystems Microinverter QT2 Installation manual
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4. APsystems Microinverter System Installation
Install the microinverters (including DC and AC connectors) under the PV modules to avoid direct
exposure to rain, UV or other harmful weather events. Allow a minimum of 1.5 cm (3/4’’) below and
above the casing of the microinverter to allow proper air flow. The racking must be properly grounded as
per local electrical code.
4.3.4 Step 4 - Ground the system
There're 2 ways to ground the QT2 series microinverters.
1. By grounding washer attached.
After the microinverters and racking are reliably installed, the microinverter's grounding washer can connect to
the racking to ensure proper earthing.
2. By grounding copper wire.
Fix the grounding copper wire by the grounding lug.
Figure 3
4.3.5 Step 5 - Connect the APsystems microinverter to AC bus cable
Insert the microinverter AC connector into the trunk cable connector. Make sure to hear the “click” as a proof of
robust connection
Figure 4
grounding lug
grounding washer Warning
injure hand
Click
