Component Guide

M250 Installation Planning

 Mixture of PV modules in both portrait and landscape installation. When PV modules are

installed in mixed orientation (both portrait and landscape orientation), solutions include:

1. Engage Cable with 1.025 meter spacing between connectors results in cleanest install for the

modules in portrait mode. For modules placed in landscape mode, plan for an unused

connector between each PV module to achieve the required additional distance. Unused

connectors must be covered with Enphase watertight sealing caps.

2. Engage Cable with 1.7-meter spacing between connectors results in cleanest install for the

modules in landscape mode, but requires that any additional cable length between PV

modules in portrait mode be coiled and dressed so that cabling does not contact the roof.

Again, unused connectors must be covered with Enphase sealing caps.

3. Another solution when PV modules are installed in mixed orientation is to transition between

1.025 and 1.7 meter spacing cable options using the Engage Coupler or an outdoor-rated

junction box. This junction box can be installed to the PV racking. Refer to

http://enphase.com/products/engage-coupler/ for information on the Engage Coupler.

How it Fits Together

In the following diagram, the M250 Microinverter and the Engage Cable are shown together with racking,

grounding and PV modules.