AC Combiner Box Installation
a.
Make sure that the main load center wires are de-energized until you have secured the CT wires in
the terminal blocks.
b.
Locate the screw on the left side of the terminal block door, loosen it with a screwdriver to unlock,
and flip open the terminal block door.
c.
Before running the CT wires through the conduit, use colored tape to mark one of the CTs and the
free end of its wires.
d.
For the marked CT wires,
connect the white wire to
“IA•” and the blue wire to
“IA”.
e.
For the unmarked CT
wires, connect the white
wire to “IB•” and the blue
wire to “IB”.
f.
Tighten the terminal
block screws to 5 in-lbs.
g.
Install the marked CT on
the load center feed wire
Line 1 (matching the
Combiner output
terminal Line 1, bottom
terminal) with the CT
arrow pointing toward
the load. Latch the CT
and listen for the click as
it closes.
h.
Install the unmarked CT
on the load center feed wire Line 2 (matching the Combiner output terminal Line 2, upper terminal)
with the CT arrow pointing toward the load. Latch the CT and listen for the click as it closes.
8. Energize the Envoy-S
a.
Re-install the clear plastic deadfront. Start all of the screws, but do not completely tighten them.
Once all screws are partially tightened, go back and tighten each one completely.
b.
Close the terminal block door, and secure it with the screw.
c.
Reinstall the AC Combiner Box door.
d.
Turn on the circuit feeding the combiner box.
e.
All four LEDs flash amber during boot up. This typically takes 2 to 3 minutes. When boot up is
complete, the Device Communications LED flashes amber indicating that that microinverters are
not yet detected.
© 2016 Enphase Energy Inc.
141-00030 Rev 02
16
