enphase M250 Quick Install Guide

Installing the M250 Microinverter (M250-60-2LL)
1
2
Read the included safety information and follow all warnings and instructions in the M250 Installation and Operation
Manual at http://www.enphase.com/support before installing the Enphase M250™ Microinverter.
M250 QUICK INSTALL GUIDE
®
Connect the Envoy
®
Communications Gateway™
a. Connect the Envoy to power and Internet according to the Envoy Quick
Install Guide.
b. Look for the + Web indication on the LCD screen.
c. Leave the Envoy running while you install the microinverters
so that any required
Envoy software up-
grade completes.
Position the Enphase Engage™ Cable
a. Lay out the cabling along the installed racking for the AC branch circuit.
b. Install an appropriately rated, off-the-shelf junction box at a
suitable location on the racking.
See notes in Step Details on back.
Warning: Do not remove power from
the Envoy if the LCD displays:
“Upgrading. . . Do Not Unplug.”
AC power
cord
broadband
router
Envoy
Ethernet cable
Check the drop connector labels to
be sure that you have the right cable.
You must use 240 VAC cable for single-phase
or 208 VAC cable for three-phase.
NOTE: The M250 meets the requirements of NEC 690.35. Because the DC circuit is isolated and insulated from
ground, the M250 does not require that you install a GEC between microinverters. To support this feature, the
PV module must be equipped with DC cables labeled “PV Wire” or “PV Cable.”
terminator
Engage
Cable
drop
connector
cable ties
connects to drop
connector
M250
DC connectors
AC junction
box

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