Replus Replus-250 - Page 5

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Step 2 - Connect the Replus-250/ Replus-250A/B Cable
Each Replus-250/ Replus-250A/B comes with one 3-pin bulkhead receptacle (or short pigtail) and
one 57-inch AC wire harness with mul-pin connectors. (The DC input wires are approximately six
inches long and are terminated with single pole connectors.) The AC connectors are oppositely
sexed, so that mulple inverters can be connected to form one connuous AC branch circuit.
1. Orient the first Replus-250/ Replus-250A/B in each branch with its male connector facing the
juncon box. The juncon box AC interconnect cable has a female connector. The Replus-250/
Replus-250A/B can be mounted with either side facing up to accommodate cable roung.
Connect the first Replus-250/ Replus-250A/B to the AC interconnect cable.
2. Plug the AC connector of the first Replus-250/ Replus-250A/B into the connector of the next
Replus-250/ Replus-250A/B, and so forth, to form a connuous AC circuit. Please check the
Replus-250/ Replus-250A/B rang label for the maximum allowable number of Replus-250/
Replus-250A/B’s on one AC circuit.
Warning: Do Not Exceed The Maximum Number Of Replus-250/ Replus-250a/b’s In An Ac
Branch Circuit, As Displayed On The Unit-rang Label. Each Replus-250/ Replus-250a/b Ac
Branch Circuit Must Be Sourced From A Dedicated Branch Circuit Protected By A 15a
Maximum Breaker.
3. Install a protecve end cap on the open AC connector of the last Replus-250/ Replus-250A/B in
the AC branch circuit.
Warning: Make Sure Protecve End Caps Have Been Installed On All Unused Ac Connectors.
Unused Ac Replus-250/ Replus-250A/B Wire Harness Connectors Are Live When The System
Is Energized By The Ulity System.
Step 3 - Install the AC Branch Circuit Juncon Box
1. Measure service entrance conductors to confirm AC service at the site. Acceptable ranges are
shown in the table below:
2. Mount the adapter plate at a suitable locaon on the PV rack system (typically at the end of a
row of modules).
3. Install an appropriate juncon box with the adapter plate.
4. Connect the open wire end of the AC interconnect cable into the juncon box using an
appropriate cable.
1. Mark the approximate centers of each PV module on the rack system. Evaluate the locaon of
the micro inverter with respect to the PV module juncon box or any other obstrucons.
Warning: Allow A Minimum Of 0.75 Inches Between The Top Of The Roof And The Boom Of
The Replus-250/ Replus-250a/b. We Also Recommend That You Allow 0.5 Inches Between The
Back Of The Pv Module And The Top Of Replus-250/ Replus-250a/b. Do Not Mount Replus-250/
Replus-250a/b In A Locaon That Allows Long-term Exposure To Direct Sunlight.
2. If using grounding washers to ground the micro inverter chassis to the PV module rack, choose
a grounding washer that is approved for the rack manufacturer. Install a minimum of one
grounding washer per micro inverter. Tear down barcode from inverter, paste the barcode into
the “Connecon map”. Torque the micro inverter fasteners to the values listed below.
1/4” mounng hardware – 45 in-lbs minimum
5/16” mounng hardware – 80 in-lbs minimum
Warning: Do Not Connect Replus-250/ Replus-250A/B To The Ulity Grid Or Energize The Ac
Circuit(S) Unl You Have Completed All Of The Installaon Procedures As Described In The
Following Secons.
Installing the Replus-250/ Replus-250A/B micro inverter System involves several key steps:
1. Aaching the Replus-250/ Replus-250A/B micro inverter to the rack.
2. Connecng the Replus-250/ Replus-250A/B micro inverter wiring harnesses.
3. Measuring service and installing the AC branch circuit juncon box.
Warning: Only Use Electrical System Components Approved For Wet Locaons.
4. Grounding the system.
5. Compleng the Replus-250/ Replus-250A/B micro inverter installaon and connecng the PV
modules.
The finished system should be similar as in the diagram. Detailed installaon steps are listed in the
following secon.
Installaon Procedure
Step 1 - Aach the Replus-250/ Replus-250A/B to the Rack
3. Mount one micro inverter at each of these locaons using hardware
recommended by your module rack vendor. Mounng slots on the micro
inverter are 0.33 inches in diameter. Maximum bolt size is 5/16 inch.
The two slots on the micro inverter are 4 inches apart
240 Volt AC Split Phases 208 Volt AC Three Phases 230 Volt AC Single Phase
L1 to L2 211 to 264 Vac L1 to L2 183 to 229 Vac
L1 to L2 200 to 270 Vac
L1, L2 to neutral 106 to 132 Vac L1, L2 to neutral 106 to 132 Vac