User Manual

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5
Wire Inputs from the AC Branch Circuits
The combiner comes with three 20A circuit breakers (16A continuous) to
which you must wire the device AC branch circuits.
A ) Use copper conductors sized to meet local code requirements and
voltage drop/rise considerations: 14 to 6 AWG copper for branch inputs.
B ) Bring in the wires from each AC branch circuit.
C ) Connect the ground (green or green/yellow) to the ground busbar.
Torque to 45 in-lbs (5 Nm).
D ) If an AC Battery branch circuit is installed, connect the neutral (white)
from that circuit to the neutral busbar. Torque to 45 in-lbs (5 Nm).
E ) Pass the L1 conductors from each PV branch circuit through the produc-
tion CT in the same direction as the arrow on the side of the CT.
Note: Do not pass conductors from AC Battery branch circuits
through the production CT. This will distort production readings.
F ) Connect L1 and L2 (usually one black and one red) from each AC branch
circuit (PV and/or battery) to the circuit breakers.
G ) Torque to 20 in-lbs (2.4 Nm).
5A outlet for
Enphase
accessories only
Enphase IQ Envoy
Neutral busbar
Ground busbar
Combiner output:
Line 2
Line 1
Breaker for
5A outlet
Combiner
breakers
Production CT
PV inputs
6
AC Battery
input
Output to
load center
Note: Enphase IQ 6 and IQ 6+ Microinverters use a two-wire system and
do not use a Neutral. The IQ Envoy still requires a Neutral from the load
center.
Wire the Output Connections
A ) Use conductors sized per local code requirements (output lug is rated
for 14 to 4 AWG copper conductors for combined output) taking into
consideration the voltage drop/rise and upstream breaker or fuse.
B ) The two DIN rail terminal blocks above the circuit breakers are the
output connections. Install L1 into the lower terminal block and L2
into the upper terminal block.
C ) Torque to 14 in-lbs (1.6 Nm).
D ) Connect the neutral (white) to the neutral busbar.
E ) Connect the ground (green or green/yellow) to the “Ground” busbar
and torque to 45 in-lbs (5 Nm).
5
WIRING DETAIL
WIRING REFERENCE
The following lists tightening torque, allowable wire size, and type for
eld-wiring terminals:
•
20 in-lbs tightening torque for circuit breaker connections
•
14 in-lbs tightening torque for combined output connections
•
45 in-lbs tightening torque for large neutral and ground busbar screws
(1/0-14 AWG)
•
20 in-lbs tightening torque for small neutral and ground busbar screws
(6-14 AWG)
•
14 to 6 AWG for branch inputs
•
14 to 4 AWG for combined output
•
Wire type: 75°C or higher copper conductors, rated for wet locations
Warning! Observe bend radius require-
ments when routing wires.