Install Manual
Table Of Contents
- IQ Micros on a Three Phase System
- IQ Commercial Envoy
- Q Cable and IQ Microinverter Accessories
- Commercial IQ System Design
- Three-phase, 208Y/120V System Design
- 208Y/120V Electrical Service Conceptual Schematic
- Ampacity Calculations for 208V Branch Circuits on Two-Pole Circuit Breakers
- Ampacity Calculations for Three-Phase Feeders to 208Y/120V Solar Subpanel
- Example 208Y/120V Electrical Schematic
- Example 208Y/120V Basic Building Block Single Line Diagram for IQ 7+ with optional field-assembled Micro panel, keeping within maximum 249 Micros per Envoy recommendation.
- Interconnecting IQ Microinverters to Other Voltages
- Three-phase, 208Y/120V System Design
- Multiple IQ Commercial Envoys on a Single Site — Filtering Communication Domains
- Splicing Q Cable and Raw Q Cable with Junction Boxes
- Wire Management of AC and DC Cables Under Array
- AC Wire Management at the Junction Box
- Installing IQ Microinverters with Frame Mount Bracket
- Appendix A: Lightning and Surge Suppression in Commercial Systems
- Appendix B: Phase Loss Protection
Planning a Commercial IQ Microinverter System – North America
© 2020 Enphase Energy Inc. All rights reserved. January 27, 2020
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Filtering with Enphase Q-LCF-250-3P
Enphase offers a 250A power line filter, the Q-LCF-250-3P specific for the IQ System Power Line
Communication (PLC) frequency. You can use it to filter electrical noise or signals between multiple IQ
Commercial Envoys and their respective communication domains, and/or noise sources from loads or other
devices in commercial and industrial settings. The filter must be protected by a 250A or smaller OCPD. When
installing a power line filter in an IQ System, the IQ Micros and the IQ Commercial Envoy must ALL be
located on the load side of the filter. A 250A limit of the filter limits the communication domain to 72kW AC at
208Y/120V. Do not cross filtered Load and Line connected conductors or run them in the same conduit, this
would defeat the purpose of line filtering. Also, do not run filtered Load conductors from more than one IQ
Commercial Envoy communication domain in the same conduit or cable tray.
For communication domains larger than this, use an isolation transformer to filter the communication domain.
Q-LCF-250-3P Line Communication Filter Mechanical Dimension
Q-LCF-250-3P Line Communication Filter Installation Recommendation