Component Guide

M250 Installation Planning

Microinverter Installation Requirements

 Allow a minimum of 1.9 cm (0.75 inches) between the roof and the bottom of the microinverter.

 Allow 1.3 cm (0.50 inches) between the back of the PV module and the top of the microinverter.

 You must install the M250 under the module, out of rain and sun.

 Do not mount the microinverter in a position that allows long-term exposure to direct sunlight or in a

vertical orientation that allows water to collect in the DC connector recess.

 Installing the microinverter black side up or vertically, with the DC connectors facing up, is not

permitted.

Racking Compatibility

The M250 Microinverter and Engage Cabling are compatible with a variety of racking systems. For a list

of approved PV racking types, refer to the Racking Compatibility document at

(http://www.enphase.com/support).

Example Installation: Layout & Parts Needed, 208 VAC Commercial

The following installation diagram shows an example with five branches. The 208V layout shows five

center-fed branches with 24 microinverters each. The PV modules are in landscape orientation. Tables

following the diagram list required and optional equipment.