APsystems YC1000-3 Installation/User Manual
12
Installation Procedures
Step 6 - Installing the AC Branch Circuit Junction Box
Figure 8
a. Install an appropriate junction box at a suitable location on the PV racking system
(typically at the end of a branch of modules).
b. Connect the open wire end of the AC bus cable into the junction box using an
appropriate gland or strain relief fitting.
c. Wire the conductors of the AC bus: L1- BROWN; L2 - BLACK; L3 - GRAY; N - LIGHT
BLUE; PE – YELLOW GREEN.
d. Connect the AC branch circuit junction box to the point of utility Interconnection.
The neutral line from the inverter is NOT allowed to be floating, MUST be connected
to grid.
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.
Double check to make sure all of the AC and DC wiring has been correctly installed.
Ensure that none of the AC and/or DC wires are pinched or damaged. Make sure that
all of the junction boxes are properly closed.
