Installation Map - enphase M250 Quick Install Manual

⚠
WARNING: The microinverter must be installed under
the module, out of rain and sun. Do not mount the micro-
inverter 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. Do not install the
microinverter black side up or vertically, with the DC con-
nectors facing up.
⚠
WARNING: When installing the Engage Cable, secure
any loose cable to minimize tripping hazard.
⚠
WARNING: Do not leave AC connectors on the Engage
Cable uncovered for an extended period. If you do not
plan to replace the microinverter immediately, you must
cover any unused connector with a sealing cap. Sealing
caps may not be reused.
⚠
WARNING: Do not exceed the maximum number of
microinverters in an AC branch circuit as listed in the
manual. You must protect each microinverter AC branch
circuit with a 20A maximum breaker.
⚠
WARNING: Do not connect Enphase Microinverters to
the grid or energize the AC circuit(s) until you have com-
pleted all of the installation procedures and have received
prior approval from the electrical utility company.
⚠
WARNING: Do not attempt to repair the Enphase Micro-
inverter; it contains no user-serviceable parts. If it fails,
contact Enphase customer service to obtain an RMA
(return merchandise authorization) number and start the
replacement process. Tampering with or opening the
Enphase Microinverter will void the warranty.
⚠
WARNING: Be aware that only qualified personnel must
connect the Enphase Microinverter to the utility grid.
⚠
WARNING: The Engage Cable terminator cap is
intended for one-time use only. If you open the termina-
tor after initial installation, the latching mechanism is
destroyed and the terminator cap cannot be used again.
If the latching mechanism is defective, the terminator
must not be used. The latching mechanism must not be
circumvented or manipulated.
⚠
WARNING: When stripping the sheath from the Engage
Cable, make sure that the conductors are not damaged.
If the exposed wires are damaged, the system may not
function properly.
⚠
WARNING: Perform all electrical installations in accor-
dance with all applicable local electrical codes and the
National Electrical Code (NEC), ANSI/NFPA 70.
✓
NOTE: Check the labeling on the Engage Cable drop
connectors to be sure that the cable matches the electri-
cal utility service at the site. Use 208 VAC (208 VAC
three-phase) Engage Cable at sites with three-phase 208
VAC service, or use 240 VAC Engage Cable at sites with
240 VAC single-phase service.
✓
NOTE: There are two release-holes in the drop con-
nector on the cable. These are not for mounting but are
used to disconnect the connector. Keep these release
holes clear and accessible.
✓
NOTE: Protection against lightning and resulting voltage
surge must be in accordance with local standards.
✓
NOTE: Many PV modules have a central stiffening brace.
In these cases, do not position the connector and micro-
inverter at the exact center of the PV module. Instead,
position the drop connectors so that the connectors do
not conflict with the braces.
✓
NOTE: If you need to remove a sealing cap, you must
use the Enphase disconnect tool or a #3 Phillips screw-
driver. Sealing caps may not be reused.
✓
NOTE: The M250 works with 240 VAC single-phase util-
ity service or with 208 VAC three-phase utility service
✓
NOTE: When installing the Engage Cable and accesso-
ries, adhere to the following:
• Do not expose the connection to directed, pressurized
liquid (water jets, etc.).
• Do not expose the connection to continuous immer-
sion.
• Do not expose the AC connector to continuous tension
(e.g., tension due to pulling or bending the cable near
the connection).
• Use only the connectors and cables provided.
• Do not allow contamination or debris in the connectors.
• Use the cable and connectors only when all parts are
present and intact.
• Fit the connections using only the prescribed tools.
• Use the terminator to seal the conductor end of the
Engage Cable; no other method is allowed.
✓
NOTE: Do not use the shipping cap to cover unused
connectors. The shipping cap does not provide an
adequate environmental seal. Enphase sealing caps
are required for the system to be UL compliant and to
protect against moisture ingress.
✓
NOTE: Completely install all microinverters and all sys-
tem AC connections prior to installing the PV modules.

Installation Map

You can build the system map manually, or you can use the
ArrayGun feature from the Enphase Installer Toolkit to easily
build and configure a system. For more information, refer to
http://enphase.com/products/arraygun.
To manually build the Installation Map:
• Peel the removable serial number label from each
microinverter and affix it to the respective location on the
installation map.
• Peel the label from the Envoy and affix it to the installation
map.
• Log in to Enlighten.
• Scan the installation map and upload it to the System
Activation form online.
• Use Array Builder to create the virtual array using the
installation map as your reference.
• To see the Array Builder demo, refer to
http://enphase.com/support/videos.