M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
Voltage Types and Conductor Count
The voltage types are either 240 VAC split phase or 208 VAC three phase. All cable connectors bear
labels indicating their cable voltage designation. Typically used for residential applications, 240VAC
includes four conductors. Three-phase 208 VAC cabling includes five conductors, and is used for most
commercial installations. Because Enphase microinverters output onto two phases, three phase cabling
balances the phases by rotating conductor use from one microinverter to the next as shown on page 18.
Racking Compatibility
Engage Cabling is compatible with a variety of racking systems. For a list of approved PV module racking
types, refer to the Racking Compatibility document at (http://www.enphase.com/support).
Cabling Length Options
Engage Cabling is available in shorter lengths with 30-40 connectors, depending upon voltage type.
Longer lengths can be ordered and cut to suit per order. Ordering options include:
Voltage type/
conductor #
Planning for Cable Lengths and Type
The Cabling System is flexible enough to adapt to almost any solar design. To determine the length and
cable type that you need, take into account the following considerations:
The number of Enphase Microinverters to be installed on the AC branch circuit. Be
certain to allocate the correct number of connectors, including extra connectors for gaps and
turns.
Additional length required to reach from the AC branch circuit junction box to the first
microinverter. If greater than half a connector interval is needed, it may be necessary to
allow for one (or more) unused connectors in order to span this distance. Unused connectors
must be covered with Enphase watertight sealing caps.
Plan to minimize the number of unused connectors with three-phase systems. When
cable connectors are left unused on a three-phase system, it creates a phase imbalance on
To Next Page
Loading...
