Installation Procedure
5
Copyright Plugreen Corporation. 2011 1-00001 REV 1
Mount the Junction box plate at a suitable location on the PV racking system (typically at the
end of a row of modules).
Install an appropriate junction box with adapter plate.
: Use electrical system components approved for wet locations only.
Connect the open wire end of the Plugreen AC Common Cable into the junction box using an
appropriate gland or strain relief fitting.
Route the continuous Grounding Electrode Conductor (GEC) through the grounding clamp of
each solar micro-inverter. Check the standards applicable for each country
Installing the AC branch circuit junction box
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WARNING
STEP 1
Mark the approximate centre of each PV module on the racking system. Typically the location should be
aligning with the PV module junction box.
:
Please use the mounting rack in such a way that it allows a minimum of 20mm
between the top of the roof and the bottom of the solar micro-inverter and 25mm between the
back of the PV module and the top of the Micro inverter.
WARNING
Mount the Plugreen Solar micro-inverters on the rack
STEP 2
STEP 2
Connect the individual micro inverter on the common cable
Each Solar micro-inverter comes with one 3 pin Circular AC connector with a wire length of 60cms.
Connect these AC connectors with the respective female connectors on the AC Common Cable. Unused
connectors on the AC Common Cable should be plugged with the Cap provided.
: AC Common Cable wiring is as: Red – Phase, black- neutral, green – earth/ground
: Make sure protective end caps have been installed on all unused AC connectors.
Unused AC Solar micro-inverter wire harness connectors may be live when the system is
energized by the utility system.
Make sure that size of AC wire gauge is appropriate to take into account of voltage drop
between the AC branch circuit junction box
WARNING
WARNING
NOTE:
STEP 4
Ground the system using suitable copper wire
Each Plugreen Solar micro-inverter comes with a ground clip that can accommodate a 6-10 AWG
conductor. Route a continuous GEC through each of the solar micro-inverters to the NEC approved AC
grounding electrode. The racking and module could be grounded to this conductor using a crimp
connection. An alternative method would be to connect the solar micro-inverter to the grounded racking
using a grounding washer approved for the racking.
STEP 5
STEP 3
Lay the AC common cable along the rack using mounting hooks
WARNING
:
Ensure that common AC Cable does not hang loose.
