I/O - 1
(24V, 1A)
I/O - 2
(24V, 1A)
Gen - I/O
(24V, 1A)
NO1 NO2
NC1 NC2
NO3
RSD
NC3 NC4
AC Combiner
PV/Storage
Generator
Control PCBA & cover
Breaker spaces for auto
transformer, generator,
AC Combiner and
Encharge circuits
Eaton breaker
CSR2100N/2150N/200N
Two general purpose
relay I/O
A: Up to 80A to PV Combiner
B: Up to 80A to Encharge
C: Up to 200A to backup load panel
D: Up to 80A to generator
A B C
D
From utility meter or
main load panel
AC power wire
Generator I/O
Ground
Neutral
Main service disconnect
Eaton breaker
CSR2100N/2150N/22000N
200A main MID relay
5
Conduit guidance -
bottom entry
Conduit guidance -
side entry
Wire the field connections and the rapid shutdown (RSD)
switch
+
DANGER!
Risk of electric shock. Check that all circuits connecting to the IQ
System Controller 2 are de-energized before wiring.
*
WARNING!
Do not install consumption CTs on the conductors above the
common busbar or on the main conductors below the main breaker if the
main breaker is used as service entrance. If the main breaker is the service
entrance breaker, You must install the CTs on the conductors near the service
entrance of system controller.
A ) Drill conduit entry holes as needed, and install conduit grounding lugs for each
opening. Be sure to reseal unused conduit entry holes with sealing plugs.
NOTE
: Main supply conductors may enter the IQ System Controller 2 from the
bottom or from the bottom-left side. Backup load conductors may enter the
IQ System Controller 2 from the bottom or bottom-right side. IQ Battery, IQ
Combiner and generator conductors may enter from the bottom, bottom-left or
bottom-right sides.
B ) Size the conductors (Line, Neutral and Ground) depending on the breaker or
fuse, proper ampacity, and voltage rise requirements according to local codes.
Refer to the conductor rating table on the door of the IQ System Controller 2.
C ) If the IQ System Controller 2 is not installed as service equipment
1
, you must
remove the main bonding jumper connected between the grounding bar and the
neutral assembly. Refer to the wiring diagram.
NOTE:
Do not modify or rewire any of the other pre-installed wiring or bonding
connections in the IQ System Controller 2.
D ) If IQ System Controller 2 is installed as service equipment
1
:
•
Connect a grounding electrode conductor to the grounding bar.
•
From the lit kit, place the label “GROUNDING ELECTRODE TERMINAL” adjacent
to the grounding bar.
•
From the lit kit, place the label “SUITABLE FOR USE AS SERVICE EQUIPMENT”
/ “MAIN SERVICE DISCONNECT” on the deadfront near the main breaker/
service disconnect.
•
If IQ System Controller 2 is not used as service equipment, these labels should
not be used.
E ) Connect Lines, Neutral, and Ground.
For details, refer to the conductor table on
the unit for sizes and refer to local codes.
*
WARNING!
Risk of equipment damage. Always connect to two Lines (ac-
tive), one neutral, and one ground.
F ) Connect the AC wires of Enphase IQ Combiner, IQ batteries, and generator into
the terminal lugs at the bottom of the IQ System Controller load center on the
left.
*
WARNING!
Do not connect the AC wires directly into the breakers. The AC
wires go into the terminal lugs as shown in the label.
G )
Rapid shutdown (RSD) switch connections
To conduct IQ8 PV rapid shutdown, a double pole single throw
lockable RSD switch is required. The RSD switch should be
placed in a readily accessible location outdoor and wired to IQ
System Controller. The maximum distance between the RSD
swtich and IQ System Controller is 200 feet. The RSD port in
IQ System Controller 2 accepts 28AWG to 16AWG wire sizes.
For RSD switch that supports only higher gauge wire sizes
(e.g. 12AWG), the cable assy header included in the IQ System
Controller 2 Lit Kit is required.
To connect the RSD switch with the IQ System Controller RSD
port, wire the L1 and L2 of one pole of the RSD switch to the
two terminals of NC3 in IQ System Controller, and wire the L1
and L2 of the other pole of the RSD switch to the two terminals
of NC4 in IQ System Controller.
To convert the RSD switch 12AWG wires to 16 AWG wires,
connect the RSD wires first to the cable assy headers from the
IQ System Controller lit kit, and then connect the 16AWG wires
on the header to NC3 and NC4 in IQ System Controller.
H ) After all conductors are connected and secured, check that
there are no exposed conductors or stray wires.
I ) Gently arrange all the conductors and connectors inside the
cabinet.
+
DANGER!
Risk of electric shock. The system is not ready
to be energized! Do not close any circuit breaker yet.
NOTE
: The polarity of L1 and L2 is swapped inside Eaton CSR
series main breakers. Installers should follow L1 and L2 on the
following image when installing consumption CTs.
*The extra lug near the top right side of NFT (auto transformer) is a
manufacturing test terminal intentionally unpopulated with no end user
application.
Cable Header
Assembly
12 AWG wires