Instructions / Assembly

SP-1000
The Solar PaQ
Solar Panel + Inverter + Universal Roof Mount Racking
UPC: 861150002609
Microinverter Instructions
Step 3 - Connect the BDM-250 Wiring Harnesses
Each BDM‐250 comes with one 3‐pin bulkhead receptacle (or short pigtail) and one 70‐inch AC wire
harness with multi‐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 multiple
inverters can be connected to form one continuous AC branch circuit.
1. Orient the first BDM‐250 in each branch with its male connector facing the junction box.
The junction box AC interconnect cable has a female connector. The BDM‐250 can be mounted
with either side facing up to accommodate cable routing. Connect the first BDM‐250 to the AC
interconnect cable.
2. Plug the AC connector of the first BDM‐250 into the connector of the next BDM‐250, and so
forth, to form a continuous AC branch circuit. Please check the BDM‐250 rating label for the
maximum allowable number of BDM‐250 on one AC branch circuit. For the chain of the BDM‐250
micro inverters thus formed, one end of the AC cable should be protected by a CAP (refer to the
BDM‐250 accessories). For the other end of the AC cable, it should be connected to an AC junction
box through a tail cable (refer to the BDM‐250 accessories). For BDM‐250‐240A and
BDM‐250‐208A, the L1 wire (red), L2 wire (black) and neutral wire (blue) in the AC cable should be
connected to the corresponding phases of the main grid through the AC junction box. For
BDM‐250‐AU and BDM‐250‐EU, the L1 wire (red) and L2 wire (black) should be connected to the L
and N phases of the main grid respectively at the AC junction box, the green/yellow wire should be
connected to PE.
WARNING: DO NOT EXCEED THE MAXIMUM NUMBER OF BDM-250 IN AN AC BRANCH CIRCUIT, AS DISPLAYED ON
THE UNIT-RATING LABEL. EACH BDM-250 AC BRANCH CIRCUIT MUST BE SOURCED FROM A DEDICATED BRANCH
CIRCUIT PROTECTED BY A 15A MAXIMUM BREAKER.
3. Install a protective end cap on the open AC connector of the last BDM‐250 in the AC branch
circuit.
WARNING: MAKE SURE PROTECTIVE END CAPS HAVE BEEN INSTALLED ON ALL
UNUSED AC CONNECTORS. UNUSED AC BDM‐250 WIRE HARNESS CONNECTORS
ARE LIVE WHEN THE SYSTEM IS ENERGIZED BY THE UTILITY SYSTEM.