Section B - Wiring; Internal View Of Iq System Controller 3 Int - enphase IQ System 3 INT Quick Install Manual

Section B - Wiring

Internal view of
IQ System Controller 3 INT
IQ System Controller 3 INT with the dead front removed is shown
in the image below.
DIN rails are provided to install circuit breakers. Use conductors
(line, neutral, and ground/earth) and circuit breakers of suitable
current rating and protection requirements according to local
codes.
Refer to the wiring table, torque recommendations, and local
codes for any specific local requirements before wiring the
IQ System Controller 3 INT.
IQ Gateway LED status
and buttons
(explained in the
Operation section of
this document)
IQ System Controller
LED status
(explained in the
Operation section of
this document)
PV terminals
IQ Battery terminals
10 DIN rail spaces for
PV and battery
circuit breakers
Terminal for SSD
switch connection
Earth/Ground
terminal/Earth bar
NOTE: All DIN rails are earthed.
IQ System Controller 3 INT quick install guide
L3 L2 L1 N
Connections
Wire Size (mm²) Torque (Nm) Max Current (A)
GRID / MAINS TERMINALS
BACKUP, NON-BACKUP LOADS TERMINALS
L3
PV, IQBAT TERMINALS
NEUTRAL, EARTH TERMINALS
NEUTRAL AND LARGE HOLES
GRID /
MAINS
EARTH BARS SMALL HOLES
THREE - PHASE (3Ø)
SINGLE - PHASE (1Ø)
L3 L2 L1 N
THREE - PHASE (3Ø)
SINGLE - PHASE(1Ø)
L2 L1 N
PE
BACKUP
LOADS
NON
BACKUP
LOADS
BACKUP
LOADS
NON-BACKUP
LOADS
IQ Gateway USB connection
WARNING: Connect at
the time of installation
Ethernet cable connection
Digital input
Manual override/
IQ System Controller 3 INT
bypass switch
CT Connection
Backup loads terminals
Non-backup loads terminals
Grid/Mains terminals
Aux. contact
8 DIN rail spaces for backup/
Non-backup loads/Grid breakers
IQ Gateway breaker
(pre-installed (pos. 19) and
pre-wired)
Neutral terminals/Neutral bar
for IQ Battery units
Terminal for control cable
connection
12