Step 7: Connect The Microinverters - enphase C250 Installation And Operation Manual

Step 7: Connect the Microinverters

a. Remove and discard the temporary shipping caps from
the Engage Cable and connect the microinverter. There
are two latching mechanisms within the connectors.
Listen for two clicks as the connectors engage. Ensure
that both latching mechanisms have engaged.
b. Repeat for all microinverters in the AC branch circuit.
c. Cover any unused connector with a sealing cap. Listen
for two clicks as the connectors engage. Ensure that
both latching mechanisms have engaged.
NOTES: Do not use the temporary shipping
cap to cover unused connectors. The
shipping cap does not provide an adequate
environmental seal. Enphase sealing caps are
required to protect against moisture ingress.
Enphase sealing caps are IP67 rated. Within
the term "IP67", "IP" indicates an Ingress
Protection (IP) rating against dust and liquids.
This specific rating of IP67 indicates that this connector protects against all dust particles
and immersion in liquid.
WARNING: Risk of electric shock. Risk of fire. Make sure protective sealing caps have
been installed on all unused AC connectors. Unused AC connectors are live when the
system is energized by the utility system. Sealing caps may not be reused.
NOTE: If you need to remove a sealing cap, you must use the Enphase disconnect tool
or a #3 Phillips screwdriver. See "Disconnect a Microinverter" on page 30. Sealing caps
may not be reused.
d. Avoid skipping Engage Cable connectors by using an Engage Coupler to connect two
Engage Cables or to connect Engage Cable to field cable.
NOTE: When cable connectors are left unused on a three-phase system, it creates a
phase imbalance on the branch circuit. If multiple cable connectors are skipped over
multiple branch circuits, the imbalance can multiply
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C250 System Installation and Operation
141-00025 Rev 03