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Here is a YouTube Video Expaining how it works

The D380 TwinPack Microinverter is comprised of two Enphase Microinverters in a single enclosure and an innovative cabling system, designed to reduce Balance-of-System costs and installation time. The D380 has a black anodized housing which improves aesthetics and allows for better thermal dissipation. The D380 TwinPack is optimized for commercial installations, but it is applicable to both commercial and residential installations.

Watch this introductory webinar for a brief overview on how to install the D380 Microinverter.

Enphase Microinverter-equipped solar energy systems generate the maximum power possible under any given conditions.

The performance of any solar system depends on a number of factors, from weather and shading, to roof orientation and the aging of solar modules. In a conventional solar energy systems, modules are wired in a single electrical series, and the lowest performing module determines the performance of the entire series.

Enphase microinverter technology solves this problem by allowing individual PV modules to operate independently, with each panel wired to its own dedicated inverter. This typically results in a 5-25% increase in energy production for the system.

D380 "TwinPack" Microinverter
 

The D380 TwinPack Microinverter is comprised of two Enphase Microinverters in a single enclosure and an innovative cabling system, designed to reduce Balance-of-System costs and installation time. The D380 has a black anodized housing which improves aesthetics and allows for better thermal dissipation. The D380 TwinPack is optimized for commercial installations, but it is applicable to both commercial and residential installations.

Benefits
 

The D380's "two-in-one" enclosure cuts in half the number of microinverter units needed for an installation. In addition, the D380's new cabling system reduces the number of interconnections and junction boxes by 33%.

New Cabling System
 

The D380 utilizes an innovative "trunk and drop" cabling system. This new approach makes it even easier to connect microinverter units, and the 12 AWG trunk cable increases current capacity, allowing for 20A branch circuits. This means that you can have more modules per branch circuit:

• 240v: 20 modules (10 TwinPacks)

Watch an introductory webinar via Enphase Energy's website for a brief overview on how to install the D380 Microinverter.

Additional Literature:

• D380 Data Sheet
• D380 Quick Install Guide (PDF, 688K)
• D380 Circuit Calculations (PDF, 72K)
• D380 Field Wiring Diagram - 240v (PDF, 124K)
• Module Compatibility List (PDF, 337K)

   Microinverters are installed beneath the solar modules, thereby hiding them from view. This would eliminate the need for,  and potential danger of,  a central inverter, reduce the amount of cabling and wiring routed through their home, and leave the solar modules as the only visible hardware on their property. The Enphase Microinverters are completely silent, thereby reducing any further disruption to their home life. In addition, the Enlighten website allows the family to monitor their power production and usage, providing peace of mind that the system is operating as expected.