APsystems YC500 Guide

APsystems
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Quick Design Guide
APsystems YC500
Photovoltaic Grid-connected Microinverter
Version 4.1 7/15

APsystems YC500 Quick Design Guide ii
Step 1. Verify that the grid voltage matches the
microinverter specifications.
Step 2. Install the AC branch circuit junction box.
Step 3. Connect the cables to the AC branch circuit
junction box.
1. Connect the open wire end of the AC branch end splice cable into
the junction box using an appropriate gland or strain relief tting.
2. Wire the conductors: L1- RED; L2 - BLACK; N -WHITE.
3. Connect the AC branch circuit junction box to the point of utility
interconnection.
Step 4. Attach the APsystems microinverters to the racking
or the PV module frame.
Figure 1
Figure 2
Figure 3

APsystems YC500 Quick Design Guide iii
Step 5. Connect the APsystems microinverter AC cables.
Step 6. Install a protective end cap on the open AC connector
of the last microinverter in the AC branch circuit.
Step 7. Ground the system.
Step 8. Connect the APsystems microinverters to the PV
modules.
Step 9. Complete the APsystems installation map.
Step 10. Activate the system.
1. Turn ON the AC circuit breaker on each microinverter AC branch
circuit.
2. Turn ON the main utility-grid AC circuit breaker. Your system will
start producing power after a ve-minute safety period.
Figure 4
Figure 5
Figure 6