enphase BRK-100A-2P-240V User manual

QUICK INSTALL GUIDE Model number: EP200G101-M240US01
Install the Enphase IQ System Controller 2
To install the Enphase IQ System Controller 2 and the Enphase IQ System Controller 2 wall-mount bracket, read and follow all warnings and instructions in this
guide and in the Enphase IQ System Controller 2 Installation and Operation Manual at enphase.com/support. Safety warnings are listed on the back of this
guide. These instructions are not meant to be a complete explanation of how to design and install an energy storage system. All installations must comply with
national and local electrical codes and standards. Only qualied electricians shall install, troubleshoot, or replace the IQ System Controller 2.
The Enphase Energy System includes the Enphase IQ System Controller 2 with Microgrid Interconnection Device (MID) capability, which
consolidates interconnection equipment into a single enclosure and streamlines grid-independent capabilities of PV and storage installations
by providing a consistent, pre-wired solution for residential applications. Along with MID functions, it includes PV, storage, and generator input
circuits.
©2021 Enphase Energy. All rights reserved. Enphase, the Enphase logo, IQ System Controller 2 , IQ Battery, IQ Gateway, IQ combiner, IQ microinverter, Enphase
App and other trademarks or service names are the trademarks of Enphase Energy, Inc. Data subject to change. Rev02-10-25-2021
S c e n a r i o 1 :
Whole home backup with IQ System
Controller as service entrance: This
is the preferred conguration for back
up of the entire main load panel. This
conguration supports up to an 80A
breaker each for the PV circuit, battery
storage and Generator(optional).
S c e n a r i o 2 :
Partial home backup with main load
panel as service entrance: This is
the preferred conguration for partial
home backup with subpanel with
PV and IQ Battery. Generator can be
integrated with IQ System Controller
based on the homeowner’s needs.
S c e n a r i o 3 :
Whole home backup with Solar
Only backup: This is the preferred
conguration for backup of the entire
main load panel using only IQ8 PV.
Generator can be integrated with
IQ System Controller based on the
homeowner’s needs.
(optional)
(optional)
(optional)

PREPARATION
A ) Inspect the packaging and the IQ System Controller 2 for damage. Do
not install or use the IQ System Controller 2 if it has been damaged in
any way.
B ) Ensure that you have the following:
• One Enphase IQ System Controller 2. The IQ System Controller 2 shipping
box contains an Enphase IQ System Controller 2, mounting bracket,
mounting hardware, and literature kit (bag with labels and accessories:
150-00148). Among the accessories are four-pin receptacles/dry contacts
that will be used for controlling external power relays.
* WARNING: The IQ System Controller 2 weighs 39.4 kg (87 lbs) and
will require two persons to lift the unit.
C ) Make sure you have the following required items:
• Enphase IQ Battery, which is required for off-grid applications.
• The Enphase IQ System Controller 2 requires a wireless connection
to an IQ Gateway, which requires an Internet connection. Failure to
maintain an Internet connection may have an impact on the warranty.
See enphase.com/warranty for full terms and services.
• Wireless USB Adapter (COMMS-KIT-01) to be installed at IQ Gateway
for communications with IQ Battery and IQ System Controller 2.
Includes USB cable for connection to IQ Gateway and allows wireless
communication with IQ Battery and IQ System Controller 2.
• Two current transformers (CT-200-SPLIT) for consumption monitoring
• One current transformer (CT-200-SOLID) for production metering
• IQ System Controller 2 lifting handles (EP200G-HNDL-R1).
• Eaton BR Series breakers, rated maximum 80A for IQ Battery and
Enphase IQ Combiner.
• If breakers are required at the input or output to IQ System Controller
2, use Eaton, Type CSR breakers rated 100 A, 125 A, 150 A, 175 A or
200 A.
• Tools: conduit (with ttings and tting tools), drill, 5/32 inch pilot bit
(or metric equivalent), screwdriver, socket, wrench, adjustable wrench,
torque wrench, level, 5/32 inch Allen key (or metric equivalent),
conductor stripper, electrician’s hole saw (2 inch) kit or punch set, and
stud nder, if installing on studs.
• Conduit ttings (hubs) are required for all installations, and NEMA
Type 3 conduit ttings (hubs) are needed when installing out of doors
(one for each used conduit opening).
• Conduit ground hub rings.
NOTE: Conduit entry is allowed only through the bottom or bottom sides
of the unit.
• Three #10, 1/4”, or 5/16” lag bolts or screws, 7.6cm (three inches) long
(depending on attachment wall), for each wall-mount bracket. Check with
a structural engineer and local standards for local requirements.
• Washers for use between fastener heads and wall-mount bracket.
• Conductors rated at 75°C. For sizes, refer to the table on the unit and
to local codes.
• Over current protection: maximum in accordance with local standards.
• The door sheet metal is not required to be grounded, since it is pro-
tected from live parts by other grounded metal and insulating plastic
materials, thus is considered unlikely to become energized.
INSTALLATION
Use the Enphase Installer App™ mobile app for iOS and Android devices. It
allows installers to congure the system while on site, eliminating the need
for a laptop and improving installation efciency.
NOTE: Only one IQ System Controller 2 can be commissioned in one
system. Multiple IQ System Controller 2s can exist on the same site but
they need to be in separate systems, i.e. separate Enphase App/Enphase
Installer App activations.
Plan a location for the IQ System Controller 2
The IQ System Controller 2 housing is NEMA type 3R and you can install it indoors
or outdoors.
* WARNING: Protection against lightning and resulting voltage surge
must be in accordance with local standards.
A ) Follow all local codes and standards when planning for and installing
the Enphase IQ System Controller 2.
B ) Choose a well-ventilated location where the ambient temperature
is within -40° C to 50° C (-40° F to 122° F), preferably out of direct
sunlight.
C ) Ensure that the mounting location can sustain the weight of the IQ
System Controller 2 and mounting bracket 39.4 kg (87 lbs). The wall
must include studs that can bear 39.4 kg (87 lbs) or can be of masonry
or other suitable structure that can bear the weight.
D ) Check the mounting location clearances:
• Indoors: at least 15cm (six inches) off the
ground, 15cm (six inches) from the ceiling,
and 15cm (six inches) on each
side.
• Outdoors: at least 91cm (three
feet) off the ground and 15cm
(six inches) on each side.
E ) Ensure that there are no pipes or
electrical conductors where you
plan to drill.
F ) Plan to maintain at least 90cm
(three feet) of clearance in front
of the IQ System Controller 2.
G ) Consider the dimensions of the
IQ System Controller 2, easy
access, unit height, conduit
entry, and length of cable when
selecting the location.
H ) Select a location where you can
interconnect to the site’s load
center using the Enphase IQ
System Controller 2.
1
width = 19.7 in.
36 in.
depth = 9.7 in.
IQ System Controller 2
dimensions
S c e n a r i o 4 :
Partial home backup with Solar
Only backup: This is the preferred
conguration for partial home
backup with subpanel using only IQ8
PV. Generator can be integrated with
IQ System Controller based on the
homeowner’s needs.
(optional)

Install the wall-mount bracket
A ) Mark a plumb line over the wall stud as a guide.
* WARNING! Multiple risks. Make sure not to drill or attach into
electric wiring or pipes that are in the wall!
B ) Remove the wall mount bracket only from the shipping box.
C ) Place the wall-mount bracket on the wall so that the mounting holes in
the middle of the bracket align with the center of the stud. Use a level
to keep the bottom of the wall-mount bracket level.
D ) Use the #10, 1/4”, or 5/16” wood screws (or masonry attachments
if installing in masonry) to attach the bracket using one screw and
washer for each slot. The slot size of the IQ System Controller 2
wall mount bracket is 8.5mm. Use an appropriately sized washer for
each of the screws, and check with a structural engineer and local
standards for local requirements.
E ) Verify that the wall-mount bracket is level, solidly attached to the wall,
and oriented for upright installation of the IQ System Controller 2.
* WARNING! Risk of injury and equipment damage. Do not mount
an IQ System Controller 2 on a bracket that is not properly attached to
a wall.
* WARNING! Risk of injury and equipment damage. Protect the IQ
System Controller 2 from impact damage and improper use.
2
D ) Repeat on the other side with the second handle.
* WARNING! Risk of injury and equipment damage. Two persons
are required to lift the IQ System Controller 2.
E ) Use the lifting handles, take the IQ System Controller 2 from the
packaging, making sure it is top side up (upright). IQ System Controller
2 is designed only for vertical installation without inclination (must be
level).
F ) Lift the IQ System Controller 2 slightly above the installed wall mount
bracket and allow it to slide down so that the bracket facing hooks set
into both the top and bottom shelves of the wall mount bracket.
G ) Allow the IQ System Controller 2 to slide down until the IQ System
Controller 2 is fully seated on the wall-mount bracket shelf.
* WARNING! Risk of injury and equipment damage. Do not release
the IQ System Controller 2 until you ensure that the IQ System Control-
ler 2 is fully seated in the wall-mount bracket shelf.
H ) For each handle, pull the plunger tabs
to release them and remove the lift
handles.
I ) Reserve the handles for the next
installation.
J ) On the bottom handle mounts, use the
two provided partial-threaded custom
M6 screws to secure each side of the IQ
System Controller 2 and tighten to 0.5
N•m (4.4 lb•in) or less.
The threaded portion of the screw
engages with the bracket, while the un-
threaded portion of the screw engages
with the hole in the bracket to prevent
vertical movement of the bracket.
* WARNING! Risk of injury and
equipment damage. Do not skip this
step. Without these screws in place,
the IQ System Controller 2 may fall and
cause injury or damage if bumped or
shaken.
K ) Use the four ller plates, provided in the lit kit, to cover the screws.
IQ System Controller 2
Wall Mount Bracket Align with stud
Bracket
shelf
8.5 mm mounting
slots
Bracket facing hooks
on back of the IQ System
Controller 2
3
Unbox and mount the IQ System Controller 2 on the
wall
* WARNING: Risk of injury. Take care when lifting. The IQ System
Controller 2 is heavy 38.5 kg (85 lbs).
* WARNING! Risk of injury and equipment damage. Avoid dropping
the IQ System Controller 2. Doing so may create a hazard, cause
serious injury, and/or damage the equipment.
A ) Remove the upper IQ System Controller 2 box, and locate the slots on
both sides of the IQ System
Controller 2 enclosure.
B ) Locate the lifting handles (sold
separately) and check that the
plungers are extended and
ready to engage into the IQ
System Controller 2 slots.
C ) Align one handle on one side of
the IQ System Controller 2 and
press the handle into the slots,
and slide the handle toward the
top of the IQ System Controller 2 enclosure until it clicks into place.
Check that the handle is secure.
Attach handles
Install breakers as needed
The IQ System Controller 2 includes one two-pole 40A circuit breaker
that feeds the neutral forming transformer (NFT). You can install addi-
tional breakers, if needed. You must follow all NEC and local electrical
codes.
Install breakers as needed for the AC grid, main load, Enphase IQ Combin-
er, Enphase IQ Batteries, and generator(optional). These breakers are not
included and must be ordered separately.
NOTE: You must install a backup loads breaker if required by local code.
* WARNING! Risk of injury and equipment damage. Use only the
breakers listed in this table.
List of allowed breakers and hold down kits:
Enphase Model No. Type and Eaton part no.
BRK-100A-2P-240V
BRK-125A-2P-240V
BRK-150A-2P-240V
BRK-175A-2P-240V
BRK-200A-2P-240V
BRK-20A-2P-240V-B
BRK-30A-2P-240V
BRK-40A-2P-240V
BRK-60A-2P-240V
BRK-80A-2P-240V
BRK-20A40A-4P-240V
EP200G-NA-HD-200A
• Main Breaker, 2 pole, 100A, 25kAIC, CSR2100
• Main Breaker, 2 pole, 125A, 25kAIC, CSR2125N
• Main Breaker, 2 pole, 150A, 25kAIC, CSR2150N
• Main Breaker, 2 pole, 175A, 25kAIC, CSR2175N
• Main Breaker, 2 pole, 200A, 25kAIC, CSR2200N
• Circuit Breaker, 2 pole, 20A, 10kAIC, BR220B
• Circuit Breaker, 2 pole, 30A, 10kAIC, BR230B
• Circuit Breaker, 2 pole, 40A, 10kAIC, BR240B
• Circuit Breaker, 2 pole, 60A, 10kAIC, BR260
• Circuit Breaker, 2 pole, 80A, 10kAIC, BR280
• Quad breaker, 4 pole, 20A/40A, 10kAIC, BQC220240
• Eaton type BR circuit breaker hold-down screw kit,
BRHDK125
4

Breaker installation positions are noted in the diagram:
A ) Ensure that the IQ System Controller 2 is completely de-energized.
B ) Open the three latches that lock the enclosure door. To release the
latch, pull the latch handle forward and then to the right. With all the
latches opened, swing open the enclosure door.
* WARNING: Risk of equipment damage. Do not remove the
pre-installed solar shield attached to the enclosure door.
C ) Use a Phillips screw driver to loosen the six screws along the
periphery of the deadfront. Support the deadfront to keep it from
falling while performing the next step.
D ) While supporting the deadfront, use a screwdriver to disconnect the
deadfront ground wire from the grounding bar before the deadfront is
removed.
E ) Use the two tabs on the front to assist handling the deadfront during
the removal. Keep the deadfront and screws handy as you will need
them later.
* WARNING: Risk of electric shock. To maintain the warranty, do
not modify the deadfront other than to remove or replace ller plates,
as needed.
F ) If you install a main breaker or load breaker, remove the standard lugs
before installing the Eaton CSR breaker. By default, lugs are provided in
the IQ System Controller 2 unit for connection to the mains and to the
load. In case of usage without breakers, the conductors are connected
directly to these lugs. When breakers are used, the lugs are replaced
with breakers during installation.
G ) Remove a ller plate from the deadfront for each breaker position
you will use. Refer to the breaker position diagram to the left. To
remove the ller plate, press the two snaps inward while gently
pushing the ller plate out.
H ) For the IQ Battery, AC Combiner or Generator (optional) connection,
snap the appropriately sized BR series two-pole Eaton breaker onto the
busbar, using only the breaker positions indicated in the diagram on the
door of the unit. The wires to be connected to each breaker are located
beside each breaker position. Remove the heatshrink cap on the wire
ends before inserting into the breaker.
I ) There are three ways of installing the IQ Gateway breaker:
Option 1: Unwire and remove the IQ Gateway breaker from the IQ Com-
biner, wire L1 and L2 from IQ Gateway terminals through the PV conduit
toIQ System Controller, insert IQ Gateway breaker onto the bottom right
position onIQ System Controllerbusbar (earlier reserved forgenerator),
wire IQ Gateway L1 and L2 to IQ Gateway breaker onIQ System Control-
lerbusbar.
Option 2: Unwire and remove IQ Gateway breaker inside IQ Combiner , wire
L1 and L2 from IQ Gateway terminals through the PV conduit throughIQ
System Controllerto backup panel ,insert IQ Gateway breaker onto an
available space on backup loads panel,wire IQ Gateway L1 and L2 to IQ
Gateway breaker on backed uploads panel.Generator breaker position is
free to be used with generator.
Option 3: Unwire and remove IQ Gateway breaker inside IQ Combiner,
unwire and remove NFT breaker insideIQ System Controllerand insert
quad breaker (BRK-20A40A-4P-240V) in the NFT position, wire L1 and L2
from IQ Gateway terminals
through the PV conduit toIQ
System Controller, wire IQ
Gateway L1 and L2 and
NFT L1 and L2 to the quad
breaker. Generator breaker
position is free to be used
with generator.
J) The bottom right breaker
position can be used for the
below purposes :
1. Power the IQ Gateway
2. Interconnect with the
Generator (optional)
3. Power the control
transformer to enable the
auxiliary contact load/PV
shedding feature
4. Connect the subpanel
backup load breaker for <100A load subpanel. You can connect the
main breaker of the subpanel to this position, since the load side lugs
in IQ System Controller do not support <100A breaker or <1AWG wires.
Ensure you stick the “GENERATOR” or “BACKUP LOADS” label, on top of
the “IQ Gateway” embossing, on the IQ System Controller deadfront per
the usage.
K ) Install each breaker by rocking it to the left, catching the clips that hold it in
place. Then rock the breaker to the right so it is fully seated and secure.
L ) For the main load breaker, use an appropriately sized CSR Eaton breaker.
Install at the location indicated in the diagram on the door of the unit.
M ) Remove the mains/load lugs by unscrewing the two nuts holding the lugs.
Re-use the same nuts to x the CSR breakers in the same position. Torque
to 4 N•m (35.4 lb•in).
N ) Use the 8-32 screw (from the lit kit marked 150-00148 that ships with the IQ
System Controller 2) to secure the mains breaker (not the load breaker). Use
a T20 drive to tighten the 8-32 screw to 1.5 N•m (13.3 lb•in). Do not use any
other screw.
O ) Check that all breakers are properly seated.
P ) Use the included stowed conductors, as labeled, to wire the circuit
breaker(s) for the IQ Batteries, IQ Combiner, and generator (optional), as
needed. The stowed conductors are provided with crimped-on ferrules
with end caps to prevent accidental contact. Remove the conductor end
caps as needed.
Q ) Torque the breaker connections as listed in the following and in the
conductor table on the unit.
R ) Purchase and install two circuit breaker hold-down screw kits (SKU:
EP200G-NA-HD-200A) to secure the IQ Battery and generator double-pole
circuit breakers.
Connections Wire size (AWG) Torque (N•m / lb•in)
Main lugs
Backup load lugs (use a 1/4” hex drive) Cu/AL: 300 KCMIL - 1 31.1 / 275
CSR breaker bottom wiring lugs Cu/AL: 300 KCMIL - 2 28.2 / 250
BR breakers (wire provided) 6 3.1 / 27
AC Combiner lugs,
IQ Battery lugs, and
Generator lugs
14 - 10
8
4 - 6
2 - 3
2.8 / 25
3.4 / 30
3.9 / 35
4.5 / 40
Neutral - large lugs (use a 3/8” hex drive) Cu/AL: 300 KCMIL - 6 31.1 / 275
Neutral and ground bars
Large holes (5/16-24 UNF) 1/0 - 3
4 - 6
8
10 -14
5.6 / 50
5.1 / 45
4.5 / 40
4.0 / 35
Small holes (10-32 UNF) 6 - 8
10 -14
2.8 / 25
1.7 / 15
Required practices when
torquing connections:
• Always follow NEC
2017 110.4 (D)
dictates.
• You must use a cali-
brated torque tool to
achieve the indicated
torque values.
• Use tamper-proof
torque mark/
paint after torquing
connections.
Load breaker
AC Combiner
breaker
IQ Battery
breaker
Generator
breaker
Mains breaker
Ground wire
Install 8-32
screw with 1.5
N•m torque
CSR breaker upper
lugs: 4 N•m torque
CSR breaker bottom
wiring lugs: 28.2 N•m
torque

I/O - 1
(24V, 1A)
I/O - 2
(24V, 1A)
Gen - I/O
(24V, 1A)
NO1 NO2 NC1 NC2 NO3
RSD
NC3 NC4
AC CombinerPV/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 eld 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 equipment1, 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 equipment1:
• 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 rst 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

6
Device Supported SKU’s
1) PCS Controller(IQ
Gateway)
• IQ Gateway i.e., ENV-IQ-AM1-240
• Envoy S metered i.e., ENV-S-AM1-120*
• IQ Combiner boxes containing the IQ Gateway:
IQ Gateway is included in X-IQ-AM1-240-3C,
X-IQ-M1-240-3,
X-IQ-AM1-240-3-ES, X-IQ-AM1-240-3C-ES,
X-IQ-AM1-240-2, X-IQ-AM1-240-B, X-IQ-AM1-240-4,
X-IQ-AM1-240-4C
2) Current Transformers • CT-200-SPLIT(needs 2 units)
• CT-200-SOLID(included with the IQ Gateway)
3) IQ System Controller 2 EP200G101-M240US01
4) IQ Battery • ENCHARGE-3-1P-NA, ENCHARGE-10-1P-NA,
• ENCHARGE-3T-1P-NA, ENCHARGE-10T-1P-NA
5) Microinverters • IQ6 series (IQ6, IQ6Plus), IQ7 series(IQ7, IQ7A, IQ7Plus, IQ7X,
IQ7PD)
• M215 and M250 series*
* Envoy S metered and M-series inverters do not support PV curtailment for MPU avoidance.
The National Electric Code(NEC) 2017 NEC 705.12(B)(2)(3)(b) allows
backfeed of current from solar/storage into the main panel subject to
the following limit
Backfeed allowed <= ((120% of busbar rating) – Ampacity of
the overcurrent protection device protecting the busbar )/
125%
Enphase, through its Enphase mobile app, also provides grid proles
that comply with PEL limits for various jurisdictions. In a situation
where both the PCS limit and a PEL prole are being used, the
maximum current backfed from the IQ System Controller 2 to the main
panel is always the lower of the PEL limit and the PCS limit.
NOTE: Import Only Mode for Energy Storage System is xed in
software and cannot be changed in the eld.
Conguring PCS In the Enphase Storage System
A ) Check that you have the following items. You must use the listed CTs
and Enphase IQ Gateway or the Envoy-S Metered with the IQ System
Controller 2 and IQ Battery for Power Control System functionality.
• Two current transformers (CT-200-SPLIT) for consumption/PCS
monitoring
• One current transformer (CT-200-SOLID) for production metering
(included with IQ Gateway)
• IQ Gateway (ENV-IQ-AM1-240) or Envoy-S Metered (ENV-S-AM1-120):
The IQ Gateway can be standalone or integrated in an IQ Combiner
box.
B ) Follow all instructions in the IQ Gateway or IQ Combiner Quick Install
Guide to ensure that CTs are installed and wired correctly with correct
polarity. Refer to the following diagram for the locations and polarity (arrow
on top of CT) on the CTs.
For whole home backup conguration, the CTs should be placed in the
same location (Production CT in IQ Combiner; PCS CT in IQ System
Controller 2) as shown in the diagram PCS CT installation within IQ System
Controller 2.
C ) When being used for PCS, you must install the CT-200-SPLIT current
transformer inside the system controller on the conductors near the
service entrance of the the system controller. The arrows on the Consump-
tion/PCS CT must point towards the loads, towards the busbar inside
the IQ System Controller 2. Refer to the image on the next page for the
Consumption/PCS CT location and wiring to the IQ Gateway.
D ) You must protect all PCS controlled busbars and/or conductors with
suitably rated overcurrent devices that are appropriately sized for the
busbar rating or conductor ampacity. Refer to the IQ Gateway/IQ Combiner
QIG to see wiring details for CTs.
E) You must indicate, with a label, the maximum current setting for back-
feed from IQ System Controller 2 that is controlled by PCS. Apply a label on
the IQ System Controller deadfront indicating the maximum current setting
for back-feed from IQ System Controller 2 that is controlled by PCS. An
example of the required label is shown as follows. Record the maximum
operating amps value on the label.
THE MAXIMUM CURRENT BACKFED BY THIS SYSTEM TO THE MAIN
PANEL MAY BE CONTROLLED ELECTRONICALLY. REFER TO MANU-
FACTURER’S INSTRUCTIONS FOR MORE INFORMATION
PCS CONTROLLED CURRENT SETTING: ___________ AMPS
Set Up the Power Control System
The IQ System Controller 2 device, when used with IQ Gateway and Produc-
tion as well as Consumption/PCS CTs, enables the Power Control System
(PCS) functionality in the Enphase Storage System.
The Enphase Storage System supports 2 PCS use cases:
• Import Only mode for Energy Storage System (ESS): Enphase Storage
System can import power from the Area Electric Power System (EPS)
for charging purposes but does not export active power from the ESS
to the Area EPS. The ESS mode of Import Only applies irrespective
of the congured battery smart prole, i.e., Self-Consumption, Full
Backup, or Savings (Time of Use) with optimization.
• Main Panel Upgrade (MPU) avoidance: In the partial home backup
scenario, the PCS limit the currents backfed into the main panel as
allowed by 2020 NEC article 705.13. This ensures that the main panel
complies with the NEC article 705.12.
NOTE: This use case is only supported with IQ Gateway and
IQ6/7/8 series inverters.
This mode is applicable when the system is congured as in
Scenario 2 as described on page 1 of this QIG.
IQ Battery/PV
01 ECO-004882 INITIAL RELEASE AKC 05OCT20
Wiring Diagram Label,
Enpower 200G-R2
780-00470 02
HENRY W
HENRY W 05OCT20
05OCT20
02 ECO-005166 - MODIFY LABEL MN 12MAR21
NFT/IQ Gateway*
AC Combiner Generator/IQ Gateway*
80
80
IQ Battery/PV AC Combiner Generator
780-00470-02
Remote Rapid
Shutdown
Switch
RSD Gen I/O
*IQ Gateway can only be put on
one of these two breaker
positions. Refer to the QIG for
instructions.
Grounding Electrode conductor.
Connected to earth when used
as service equipment.
Connected to main service when
not used as service equipment.
IQ Battery

PCS CT installation within IQ System Controller 2
IQ Gateway Terminal Block
Relay contacts
(if needed)
white
blue
Not used
white
blue
Consumption CTs
The arrows must point
toward the load, away
from the grid.
P1 C1 C2
1 2 3 4 NO
Ref
Common
C
Digital Input Relay
PD, B300
OVC II
L1 L2
N
CU, 75C, 14AWG MIN
MEAS CAT III
OVC III Production | Consumption
Set Up the Power Control System (continued)
6
F ) For Production as well as Consumption/PCS CTs, you must apply the
following label to each CT when the system is congured to use PCS-based
current limiting.
The available space on the CTs for labeling is as follows.
Consumption/PCS CT (CT-200-SPLIT):
• Left side: 20mm(vertical) x 14mm(Horizontal)
• Back side: 20mm (vertical) x 20mm(Horizontal)
Production CT (CT-200-SOLID):
• 9mm(vertical) x 30mm(horizontal)
This sensor is part of a Power Control System. Do not re-
move or disable. Replace with same type and rating.
NOTE: The maximum operating currents in controlled busbars or
conductors are limited by the settings of the Power Control System
(PCS) and may be lower than the sum of the currents of the connected
controlled power sources. The settings of the PCS controlled currents
may be used for calculation of the design currents used in the relevant
sections of NEC Article 690 and 705.
* WARNING! Risk of electric shock and re. Only qualied personnel
are permitted to set or change the setting of the maximum operating
current of the PCS. The maximum PCS operating current setting shall
not exceed the busbar rating or conductor ampacity of any PCS con-
trolled busbar or conductor.

G) PCS Export Limiting via Enphase Installer App
PCS that ensures the Import Only mode for ESS is always running in the
system and the import only mode is not changeable. Energy storage
never exports to grid and therefore never backfeeds the main panel in a
partial backup scenario if consumption/PCS CTs are placed as outlined
in section 6.
This section outlines how to congure current export limiting to limit PV
current when PV current exceeds the allowed backfeed/export.
The MPU avoidance use case of PCS can be enabled via Enphase
Installer App during installation at Step 2 b) Site Conguration as shown
in the gure below:
NOTE: The MPU avoidance use case requires conguration using the
Enphase Installer App version v3.0.8 or higher and IQ Gateway software
version 6.1.32 or higher.
In the site conguration menu, the user can see 2 options:
• Select Backup Type
• PCS Export Limiting
As the MPU avoidance conguration can only be enabled in the partial
home backup mode, the installer has to rst select the ‘Partial Home
Backup’ conguration under ‘Select Backup Type’.
Then, in the ‘PCS Export Limiting’ section, the installer is required to
enter the type of micro-inverters(IQ8, IQ7, IQ6) & the number of micro-in-
verters of each type. Along with this, the installer adds information on
the rating of the main load panel busbar, the main service breaker rating
& can also set the PCS Controlled Export Current Limit. If this value is
not set, the system auto-calculates the export current limit based on the
Auxiliary Contact Connections
IQ System Controller 2 has three I/O ports and one Rapid Shutdown Switch
(RSD) port.
- I/O-1, I/O-2 are for load and excess PV control:
- I/O-1 has two normally open auxiliary contacts (NO1, NO2), and each
auxiliary contact has two terminals
I/O-2 has two normally close auxiliary contacts (NC1, NC2), and each auxil-
iary contact has two terminals
The RSD port is for connecting with a remote RSD switch. It has two normal-
ly close auxiliary contacts (NC3, NC4), and each auxiliary contact has two
terminals.
Gen-I/O has one normally open auxiliary contact (NO3) for generator control,
and this contact has three terminals.
All the auxiliary contact relays are rated for pilot duty at 24Vac/Vdc (nomi-
nal) and 1 Amp.
A. Auxiliary Contact connections for shedding excess PV and load
For making the connections you would need the following components: a
denite purpose contactor, control transformer, and fuse.
For recommendations please refer the tech brief
https://support.enphase.com/s/article/Load-and-Solar-Circuit-Control-using-Enpower-Auxiliary-Contacts
Steps for connecting auxiliary contact for shedding excess PV or load:
1. Use wires sized per local code requirements taking into consideration
the voltage drop/rise and upstream breaker or fuse.
2. Connect one of the primaries of the control transformer to 120V
breaker, and the other wire to the neutral bus in the backup load panel
via an OCPD such as an inline fuse.
3. Connect one wire of the secondary of the control transformer to one of
the terminals of either NO/NC auxiliary contact from I/O-1 or I/O-2 on
IQ System Controller 2.
4. Connect the other terminal of the auxiliary contact to the 24Vac coil
terminal (usually named A1) of the denite purpose contactor.
5. Connect the other terminal of the contactor coil (usually named A2) to
the other wire of the secondary of the control transformer.
6. For shedding excess load:
a. Connect the L1 (and L2 if 240V) terminal of the denite purpose
contactor to the backup load panel protected by a breaker.
b. Connect the T1 (and T2 if 240V) terminal of the contactor to the
excess load circuit that needs to be shed.
7. For shedding excess PV:
a. Connect the L1 and L2 terminals of the denite purpose contactor to
the OCPD (e.g., breaker in the AC combiner) protecting the inverter
output circuit of the excess PV to be shed.
b. Connect the T1 and T2 terminals of the denite purpose contactor to
the inverter output circuit of excess PV that needs to be shed.
7

I/O - 1
(24V, 1A)
I/O - 2
(24V, 1A)
Gen - I/O
(24V, 1A)
NO1 NO2 NC1 NC2 NO3
RSD
NC3 NC4
AC CombinerPV/Storage Generator
Line diagram for auxiliary contact connections image shows NO1 is used
to shed excess loads and NO2 is used to shed excess PV. See our technical
brief, Load and Solar Circuit Control using IQ System Controller Auxiliary
Contacts (https://support.enphase.com/s/article/Load-and-Solar-Circuit-Control-using-Enpower-Auxil-
iary-Contacts), for detailed line diagram and other details.
B. Securing Auxiliary Contact to IQ System Controller 2
IQ System Controller 2 is shipped with feed through headers pre-installed on
the terminals.
Follow the below steps to secure the headers to IQ System Controller 2, as
shown in Feed through headers for I/O-1 and I/O-2 image.
1. Insert the wires from the transformer controller and the external
contactor into the feed through header.
NOTE: Supports AWG 28 to AWG 16 wire sizes
2. Tighten the screws on the top (torque 0.22Nm to 0.25Nm) to secure
the wires.
Follow same procedure for generator dry contact connections (There are 3
terminals on the Gen-I/O port as shown in Feed thorugh header for genera-
tor I/O image. Use the rst and third terminal for wiring.)
Auxiliary contacts In IQ System Controller 2
Line diagram for auxiliary contact connections used for shedding excess load and PV.
Feed through headers for I/O-1 and I/O-2
Feed through header for generator I/O
2. Tighten these screws to
hold the wires in place
1. Insert wires here
Insert wires in these
terminals

Generator Connections
An auto-start generator can be integrated with the Enphase Storage system
without the need for any external ATS.
NOTE: This system is only compatible with permanently installed, hardwired
generators that are non-separately derived as per NEC 250.35(B).
Steps for connecting a generator are listed below:
A ) Wire the L1 and L2 AC wires from the generator into the generator lugs
on the IQ System Controller 2.
B ) Ensure that the ground terminal of the generator is connected to the
ground bar inside IQ System Controller 2. Size the generator’s equipment
grounding conductor as per NEC 250.122 and generator manufacturer’s
instructions.
C ) Connect the neutral wire from generator to an appropriately sized posi-
tion on the neutral bar inside IQ System Controller 2.
NOTE: IQ System Controller 2 does not switch the neutral and the ground
from the generator. It only switches the feeders i.e., L1 and L2. Therefore,
the generator needs to be congured as a non-separately derived system.
D ) Buy and install an appropriately sized breaker for the generator on the
IQ System Controller 2’s busbar and connect the L1 and L2 generator cables
from IQ System Controller 2’s ATS board to this breaker.
NOTE: The maximum allowed breaker size is 80A. Select an Eaton BR
breaker model that has the hole for the additional fastener as per NEC
480.36(D). Available models: BR220B, BR230B, BR240B, BR250B. Eaton
breaker BR260, BR280 already has the hole.
8
E ) Purchase and install a hold-down screw kit (SKU: EP200G-NA-HD-200A)
to secure the Generator breaker.
F ) Install a pair of generator CTs (CT-200-SPLIT) for L1 and L2 at the IQ
System Controller 2’s Generator input terminal for power monitoring when
the generator is running. Detailed CT wiring is described in step 9.
G ) Use Enphase Installer App mobile application to commission and pro-
gram IQ System Controller 2 to control the generator.
H ) For 2-wire autostart generators, wire the Generator I/O port in IQ System
Controller 2 to the 2-wire remote start terminals of the generator. Refer Step
7 for steps on how to secure the auxiliary contacts to IQ System Controller
2. Follow local code requirements for wire sizing.
I ) Autostart generators typically require a constant 120 Vac for battery
charger. This power can be drawn from the backup loads panel protected by
a breaker so that it is powered even during an outage.
J ) For permanently installed Propane/Natural gas generators, have a certi-
ed contractor install the gas line required to supply the unit.
K ) Some utility-sense based generators like the Generac Guardian come
with the capability to auto start generators when system goes off grid by
sensing the absence of the 240V utility power. For such utility-sense based
remote start generators, install the utility sensing generator start/stop
control circuit. Wire the primary of a 120V/12V power supply to the backup
loads panel. Connect the secondary to the Generator auxiliary contact relay
on the IQ System Controller 2. Wire the other end of the relay to the coil
of the Normally Close contactor. Connect the contactor to 240V from the
backup loads panel for utility sensing. Wire the other end of the contactor to
the Generator through a fuse.
Line diagram for 2-wire remote start generator connection
Line diagram for utility sense based remote start generator connection

Use the Enphase Installer App to commission the IQ System Controller
2. Once connected to the IQ Gateway, refer to the Installer Toolkit help
topics for more information.
CONFIGURE and ACTIVATE
OPERATION
If you do not see the IQ System Controller 2 information in Enphase
App, check that the IQ Gateway and the Internet connection are
Field Adjustable Trip Points
IQ System Controller 2 has adjustable voltage and frequency trip points
that may need to be set depending upon local requirements. An installer
can request Enphase Customer Support for making requested changes
to the IQ System Controller 2 trip points. It is important to ensure that all
electrical code requirements as well as requirements imposed by local
Authorities Having Jurisdictions (AHJ) are followed while setting the trip
points.
11
10
Close and energize IQ System Controller 2
* WARNING: Before energizing, make sure that ALL IQ System Control-
ler 2 connections are properly installed and conductors terminated.
A ) Reconnect the deadfront ground cable to the grounding bar, torque as
shown in the table on the unit label (and on page 4 of this guide), and
replace the deadfront using the six reserved screws. Tighten the cover
screws using a Phillips screw driver.
* WARNING! Risk of equipment damage. Ensure that no conductors are
pinched before replacing the cover.
* WARNING! Conductors are factory provided for the generator, AC
combiner and IQ Battery. If no generator is used with the system, these
conductors will not be terminated. If the IQ Combiner does not connect to
the IQ System Controller 2, these will also not be terminated. When these
wires are not terminated, they should remain stowed in the clips on the
plastic frame supporting the panel board interior and their end caps should
not be removed.
+ DANGER: Risk of electric shock. There are many potential sources
of voltage. Check any Enphase IQ Battery, PV, or other generation source
for voltage.
B ) You must ensure that all electrical circuits external to IQ System Controller
2 are completed and safe before energizing IQ System Controller 2.
9
Install the Generator CTs to standalone IQ Gateway or IQ
Gateway in the IQ Combiner box
A pair of generator CTs will be connected in parallel to the consumption CTs, if
present.
A ) Make sure that the main load center wires are de-energized until you have
secured the CT wires in the terminal blocks.
B ) Before running the CT wires through the conduit, use colored tape to mark
one of the CTs and the free end of its wires.
C ) Clamp the marked CT on Line 1 of the generator branch circuit inside the
IQ System Controller 2 box with the arrow on the CT pointing towards the
Generator breaker.
D ) Clamp the unmarked CT on Line 2 of the generator branch circuit inside the
IQ System Controller 2 box with the arrow pointing towards the Generator
breaker.
E ) Bring the CT lead wires out of IQ System Controller 2 to the standalone IQ
Gateway or IQ Gateway in the IQ Combiner box
F ) Use a screwdriver to loosen the screw on the IQ Gateway terminal block
door and open the door.
G ) Unscrew the Consumption CT wires if present
H ) For the marked CT
a. If the Consumption CT is present, use NEC approved wiring method
to splice the white wire of the CT with the white wire of Line 1 of the
consumption CT.
b. Connect the spliced white wires to the upper “C1” terminal of IQ
Gateway (“IA•” terminal for the Envoy-S Metered).
c. Splice the blue wire of the CT with the blue wire of Line 1 of the
consumption CT.
d. Connect the spliced blue wires to the lower “C1” terminal of IQ Gateway
(“IA” terminal for the Envoy-S Metered).
I ) For the unmarked CT
a. If the Consumption CT is present, use NEC approved wiring method
to splice the white wire of the CT with the white wire of Line 2 of the
consumption CT.
b. Connect the spliced white wires to the upper “C2” terminal of IQ
Gateway (“IB•” terminal for the Envoy-S Metered).
c. Splice the blue wire of the CT with the blue wire of Line 2 of the
consumption CT.
d. Connect the spliced blue wires to the lower “C2” terminal of IQ Gateway
(“IB” terminal for the Envoy-S Metered).
J ) Tighten each of the IQ Gateway terminal block screws to 5 in-lbs (0.56
Nm).
K ) Close and secure the terminal block door of the Envoy.
C ) If you work on an IQ6/7/M-series retrot system, and you plan
to energize IQ System Controller 2 and connect the PV without
commissioning the system in the same day, follow the sequence
below:
a. Leave the AC combiner breaker in the load panel where it was
originally placed, instead of connecting the AC combiner L1 and
L2 circuits to the terminal lugs in IQ System Controller. This way
your PV systems can still be functional before commissioning.
b. OPEN the NFT and IQ Battery breakers
c. CLOSE the breakers in the following order:
• Main breaker
• Load breaker
* WARNING! At commissioning, you must reconnect the AC
combiner L1 and L2 circuits back to the terminal lugs in IQ System
Controller as shown in step 5(F) in this document.
NOTE: If not commissioning the system you must ensure that the
DC switches on all IQ Batteries are turned off to avoid the depletion of
charge on the IQ Batteries.
D ) If you plan to commission the system, follow the instructions in the
Enphase Installer App for energizing IQ System Controller 2.
E ) Energize the circuit feeding the IQ System Controller 2. If installed,
turn the breaker feeding the IQ System Controller 2 to the on
position.
F ) Close and secure the door of the IQ System Controller 2.

Enphase Customer Support: enphase.com/en-us/support/contact
Safety and Advisory Symbols
+DANGER: This indicates a hazardous situation, which if not avoided, will
result in death or serious injury.
*WARNING: This indicates a situation where failure to follow instructions
may be a safety hazard or cause equipment malfunction. Use extreme
caution and follow instructions carefully.
✓NOTE: This indicates information particularly important for optimal system
operation. Follow instructions carefully.
Safety Instructions
+DANGER: Risk of electric shock. Risk of re. Only qualied electricians should
install, troubleshoot, or replace the IQ System Controller 2.
+DANGER: Risk of electric shock. Risk of re. Do not attempt to repair the IQ
System Controller 2. Tampering with or opening the IQ System Controller 2
will void the warranty. If the IQ System Controller 2 fails, contact Enphase
Customer Support for assistance at enphase.com/en-us/support/contact.
+DANGER: Risk of electric shock. Do not use Enphase equipment in a manner
not specied by the manufacturer. Doing so may cause death or injury to
persons, or damage to equipment.
+DANGER: Risk of electric shock. Do not install the IQ System Controller 2
without rst removing AC power from the photovoltaic system and ensuring
that the DC switch on the Enphase IQ Batteries are off. Disconnect the power
coming from the photovoltaics and ensure that the DC switch on the IQ
Battery batteries are off before servicing or installing.
+DANGER: Risk of electric shock. Risk of re. Do not work alone. Someone
should be in the range of your voice or close enough to come to your aid
when you work with or near electrical equipment.
+DANGER: Risk of re. Do not allow or place ammable, sparking, or explosive
items near the IQ System Controller 2.
+DANGER: Risk of electric shock. In areas where ooding is possible, install
the IQ System Controller 2 at a height that prevents water ingress.
*WARNING: Risk of equipment damage. IQ System Controller 2 is shipped
and stored on its back. The upright position is only needed when installed.
*WARNING: You must install the IQ System Controller 2 only on a suitable wall
using an Enphase wall-mount bracket.
*WARNING: Before installing or using the IQ System Controller 2, read all
instructions and cautionary markings in this guide and on the equipment.
*WARNING: Do not install or use the IQ System Controller 2 if it has been
damaged in any way.
*WARNING: Do not sit on, step on, place objects on, or insert objects into the
IQ System Controller 2.
*WARNING: Do not place beverages or liquid containers on top of the IQ
System Controller 2. Do not expose the IQ System Controller 2 to ooding.
✓NOTE: Perform installation and wiring, including protection against lightning
and resulting voltage surge, in accordance with all applicable local electrical
codes and standards.
✓NOTE: Because IQ Battery is grid forming, you must install signage in accord-
ance with NEC articles 705, 706, and 710.
✓NOTE: Using unapproved attachments or accessories could result in dam-
age or injury.
✓NOTE: Install properly rated over current protection as part of the system
installation.
✓NOTE: To ensure optimal reliability and to meet warranty requirements, the
IQ System Controller 2 must be installed and/or stored according to the
instructions in this guide.
✓NOTE: The IQ System Controller 2 is compatible only with the IQ Combiner
4/4C tted with USB hub, USB radios, and production and Consumption/
PCS CTs. The IQ Combiner with the IQ Gateway inside is required for
operation of the IQ System Controller 2. Earlier versions of the Enphase IQ
Gateway communications gateway are incompatible.
✓NOTE: The Enphase IQ System Controller 2 is intended to operate with an
Internet connection through the IQ Gateway. Failure to maintain an Internet
connection may have an impact on the warranty. See Limited Warranty for
full terms and services (enphase.com/warranty).
✓NOTE: When replacing an Enphase IQ System Controller 2, you must replace
it with an IQ System Controller 2 of the same type, with the same AC current
rating.
✓NOTE: Properly mount the IQ System Controller 2. Ensure that the mounting
location is structurally suited to bearing the weight of the IQ System Control-
ler 2.
✓NOTE: During use, storage, and transport, keep the IQ System Controller 2:
• Properly ventilated
• Away from water, other liquids, heat, sparks, and direct sunlight
• Away from excessive dust, corrosive and explosive gases, and oil smoke
• Away from direct exposure to gas exhaust, such as from motor vehicles
• Away from falling or moving objects, including motor vehicles. If mounted
in the path of a motor vehicle, we recommend a 91cm (36-inch)
minimum mounting height
• In a location compliant with re safety regulations
• In a location compliant with local building codes and standards
1NOTE: IQ System Controller 2 is not suitable for use as service equipment
in Canada.
SAFETY
IMPORTANT SAFETY INSTRUCTIONS. SAVE THESE INSTRUCTIONS. This guide contains important instructions that you must follow during installation
and maintenance of the Enphase IQ System Controller 2. Failing to follow any of these instructions may void the warranty (enphase.com/warranty).
In Case of Fire or Other Emergency
In all cases:
• If safe to do so, switch off the AC breaker for the IQ System Controller 2
circuit, and if an isolator switch is present, switch off the AC isolator for the
IQ System Controller 2 circuit.
• Contact the re department or other required emergency response team.
• Evacuate the area.
In case of re:
• When safe, use a re extinguisher. Suitable types are A, B, and C dry chemical
re extinguishers. Additional extinguishing media include carbon dioxide, or
alcohol-resistant foams.
In case of ooding:
• Stay out of water if any part of the IQ System Controller 2 or wiring is
submerged.
• If possible, protect the system by nding and stopping the source of the
water, and pumping it away.
• If water has contacted the UNIT, call your installer to arrange a inspection.
If you are sure that water has never contacted the battery, let the area dry
completely before use.
In case of unusual noise, smell or smoke:
• Ensure nothing is in contact with the IQ System Controller 2 or in the venting
area on top of the IQ System Controller 2.
• Ventilate the room.
• Contact Enphase Customer Support at enphase.com/en-us/support/contact.
Safety Instructions, continued
Environmental Protection
ELECTRONIC DEVICE: DO NOT THROW AWAY. Waste elec-
trical products should not be disposed of with household
waste. Refer to your local codes for disposal requirements.