enphase M250 User Manual

Enphase Microinverter Installation and Operation
 2016 Enphase Energy. All rights reserved. 141-00024 Rev 02b
10
Lightning and Surge Suppression
Enphase Microinverters have integral surge protection, greater than most traditional inverters. However,
if the surge has sufficient energy, the protection built into the microinverter can be exceeded, and the
equipment can be damaged. For this reason, you must protect your system with lightning and/or surge
suppression devices according to local regulation. Install devices that adhere to local standards.
NOTE: Protection against lightning and resulting voltage surge must be in accordance with local standards.
Parts and Tools Required
In addition to the microinverters, PV modules, mounting rail, and associated hardware, you will need the
following.
Enphase Equipment
 Enphase Envoy
®
Communications Gateway
BEST PRACTICE: Connect the Envoy before the solar installation is complete. When powered up and
connected for the first time, the Envoy may retrieve an automatic upgrade from Enphase. Because this
upgrade may take up to 20 minutes, connect the Envoy first (connect to both AC power and to the broadband
router) so that the upgrade completes well before the solar module installation is complete. For more
information, see the Envoy Communications Gateway Installation and Operation Manual.
 Engage Cable, as needed. (See “Engage Cable Planning and Ordering” on page 30.)
NOTE: Order the correct Engage Cable type. Installers must order Engage Cable for either single-phase or
three-phase installations. Use 400 Vac Engage Cable at sites with three-phase service, or use 230 Vac
Engage Cable at sites with single-phase service. All drop connectors on the Engage Cable bear labels
indicating the cable voltage designation.
 Sealing caps, as needed (for any unused drops on the Engage Cable)
 Terminators, as needed (one needed at the end of each AC branch circuit)
 Enphase disconnect tool (number 2 and 3 Phillips screwdrivers can be substituted)
 Enphase phase coupler (needed for three phase installation)
Other Items
 Outdoor-rated, weather-proof AC junction box(es)
 Gland or strain relief fitting (one per AC junction box)
 Bonding conductor, if required
 Torque wrench, sockets, spanners for mounting hardware
 Adjustable spanner or open-ended spanner (for terminators)
 Tool for PV module locking connectors
 Handheld mirror (to view indicator lights on the undersides of the microinverters)
 Laptop or other device for Envoy set up

enphase M250 Specifications

General

Model	M250
Manufacturer	Enphase Energy
Efficiency	96.5%
Output Voltage	240 V
Operating Temperature Range	-40°C to +65°C
Maximum Output Current	1.04 A
CEC Efficiency	96.0%
Start-up Voltage	22 V
Output Frequency	60 Hz
Enclosure Rating	IP67
Weight	1.6 kg