Installation Guide
Table Of Contents
- Disclaimers
- Support and Contact Information
- Revision History
- Contents
- HANDLING AND SAFETY INSTRUCTIONS
- IMPORTANT SAFETY INSTRUCTIONS
- Chapter 1: Introducing the SolarEdge Power Harvesting System
- Chapter 2: Installing the Power Optimizers
- Chapter 3: Installing the Inverter
- Chapter 4: Connecting the AC and the Strings to the Safety Switch
- Chapter 5: Commissioning the Installation
- Chapter 6: User Interface
- Chapter 7: Setting Up Communication
- Appendix A: Errors and Troubleshooting
- Appendix B: Mechanical Specifications
- Appendix C: External Fan Maintenance and Replacement
- Appendix D: Replacing and Adding System Components
- Appendix E: Determining the Circuit Breaker Size
- Technical Specifications - Single Phase Inverters (North America)
- Technical Specifications - Three Phase Inverters (North America)

Measure the voltage of each string individually before connecting it to the other strings
or to the inverter. Verify correct polarity by measuring the string polarity with a
voltmeter. Use a voltmeter with at least 0.1V measurement accuracy.
NOTE
Since the inverter is not yet operating, you may measure the string voltage and
verify correct polarity on the DC wires inside the Safety Switch.
For troubleshooting power optimizer operation problems, refer to
Power Optimizer
Troubleshooting
on page 98.
-Three Phase System Installation Guide MAN-01-00002-4.3
30 Step 4: Verifying Proper Power Optimizer Connection