Power Terminals - enphase IQ System Controller 3 INT Quick Install Manual

Section B - Wiring

Power terminals

Connect DER, mains, and load wires as mentioned below:
• Backup loads: backup load lug (1), neutral bar (10)
• Mains: mains lugs (2), neutral bar (10), earth bar (9)
• Non-backup loads: non-backup load lugs (3), neutral bar (10),
earth bar (9)
• PV: PV L1, L2, L3 (4), neutral lugs (6) through PV breaker (B1)
• IQ Battery: IQ Battery L1, L2, L3 (5), neutral bar (10)
C O N N E C T I O N S
IQ System Controller 3 INT lugs
Neutral and ground bar large
holes
Neutral and ground bar small
holes
NOTE: Connect L1, L2, and L3 mains, loads, and PV as
indicated on equipment labels (12, 13). Maintaining correct
phase continuity is necessary for proper operation.
IQ System Controller 3 INT Quick Install Guide
W I R E S I Z E S TO R Q U E S T R I P L E N G T H
(Sq .mm) ( N m) ( mm )
2.5 - 35
6 12
2.5 - 35
5 10
2.5 - 16
2.2 10
Backup load lug
Mains lugs
Non-backup load lugs
PV lugs
IQ Battery lugs
WARNING: PV neutral must be wired to breaker before landing
on neutral lugs. Battery neutral must be wired to neutral bar.
PV neutral lugs
DER termination label
Main relay label
Earth bar
Neutral bar
11