enphase EP200G101 User manual

1
IQ System Controller 2 Quick Install Guide
IQ System Controller 2
Quick Install Guide
MODEL NUMBER-
EP200G101-M240US01
VERSION 7.0
SEPTEMBER 2022

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IQ System Controller 2 Quick Install Guide
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.

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IQ System Controller 2 Quick Install Guide
Table of contents
Scenario 1
Whole home back up with IQ System
Controller
Scenario 2
Partial home back up with IQ System
Controller
Scenario 2A
Partial home backup with solar only backup
What’s in the box
Tools needed
Section A
Mounting the product
Plannning a location for IQ System Controller
1. Planning a mounting location
2. Mounting the product
3. Opening the deadfront
Section B
Mounting the breakers
Internal Schematic of IQ System Controller 2
Wiring for service entrance
Installing main and back-up breaker
Installing DER breakers : IQ8 systems without
generator
Installing DER breakers : IQ8 systems with
generator
Installing DER breakers : non IQ8 systems
Section C
Wiring
Drilling Conduits
Wiring the DERs
Aux wiring : Rapid shutdown switch
Aux wiring : IQ Load Controller
Aux Wiring : Generator control
Wiring Mains/ supply side conductors
Wiring back-up loads
Wiring the CTs
Completing the installation
Safety

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IQ System Controller 2 Quick Install Guide
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.
Scenario 1
Whole home back-up with
IQ System Controller
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).
The microinverters ranges supported in this conguration are IQ8,
IQ6/7, M-Series and S series.
Microinverters

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IQ System Controller 2 Quick Install Guide
Scenario 2
Partial home back-up with
IQ System Controller 2
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.
The microinverters ranges supported in this conguration are IQ8,
IQ6/7, M-Series and S series.
Microinverters

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IQ System Controller 2 Quick Install Guide
Partial home backup with
Sunlight Backup
This is the preferred conguration for partial home backup with
subpanel using only IQ8 PV. Generator can be integrated with
Enpower based on the homeowner’s needs.
It is recommended that installers use 2 Load controllers in order
to do load shedding to ensure seamless back up of essential loads
using IQ8 Microinverters.
It is not recommended to install sunlight back up for whole home
back up scenarios.
This conguration can be supported with only IQ8 Microinverters.
Microinverters
Scenario 2A

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IQ System Controller 2 Quick Install Guide
What’s in the box
IQ System Controller 2 Wall Mounting Bracket Rapid Shutdown Switch
Accessory kit
ITEM NAME ITEM CATEGORY PATH DESCRIPTION QUANTITY
Filler Cover Mounting BKT-L 200G Enpower Plastic Part Filler Cover Mounting BKT-L
200G System Controller 2
Filler Cover Mounting BKT-R 200G Enpower Plastic Part Filler Cover Mounting BKT-R
200G System Controller 2
Screw, Pan Hd , Phillips #3, M6x25mm Lg (5mm
Shank - 20mm Thread), Machine, 304 SS Fastener
Screw, Pan Hd , Phillips #3,
M6x25mm Lg (5mm Shank - 20mm
Thread), Machine, 304 SS
2
Screw, pan Hd, Torx X20, Machine,
#8-32 UNC, 0.63’’ Lg, A2-70 Fastener Screw, pan Hd, Torx X20, Machine,
#8-32 UNC, 0.63’’ Lg, A2-70 1
Lit Kit Label, Enpower 200G Label Lit Kit Label, System Controller 200G 1
Label, Enpower, CT Field Label 6
Label, Enpower, PCS Field Label 2
Cable Assy Header Enpower 200G R2 Cable Assembly Cable Assy Header System
Controller 200G R2 4
NEC Labels for Rapid Shutdown Label Labels required as per NEC for
Rapid Shutdown Switch 2
Wiring for Rapid Shutdown Switch Wire 20 ft. of color coded wires to complete
Rapid Shutdown Switch wiring 4

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IQ System Controller 2 Quick Install Guide
Tools needed
S. NO ITEM NAME QUANTITY SOURCE
1CT-200-Split 2IQ Combiner/Enphase Store
2EP200G-HNDL-R1 (lifting handle) 1 Enphase Store
3Eaton Breakers dierent ratings (described in Sec xxx) 4 Enphase Store/Retail outlets
4Conduits (with ttings and Fitting tools) As required Provided by Installer
5 Drill 1 Provided by Installer
6 5/32 inch pilot bit 1 Provided by Installer
7 Screw driver 1 Provided by Installer
8 Wrench 1 Provided by Installer
9 Adjustable Wrench 1 Provided by Installer
10 Torque wrench 1 Provided by Installer
11 Level 1 Provided by Installer
12 5/32 inch Allen key 1 Provided by Installer
13 Conductor stripper 1 Provided by Installer
14 Electrician’s hole saw (2 inch) or punch set 1 Provided by Installer
15 Stud nder (if required) 1 Provided by Installer
16 Conduit ground hub rings 1 Provided by Installer
17
#10,1/4’’ or 5/16’’ lag bolts or screw 3’’ long
(depending on attaching wall) -
for each wall mount bracket
3 Provided by Installer

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IQ System Controller 2 Quick Install Guide
Plan a location for the
IQ System Controller 2
Mounting the product
Section A
• It is recommended to install the product indoors, if the product is
installed outdoors it is recommended to be installed where there is
no direct exposure to sunlight.
• Install this product on the place where PV cables, smart meter
cables, grid cables and battery cables are easily accessible.
• This product is designed to be installed on the wall vertical only.
Do not install this product on the ground.
• The mounting surface must be able to suppor the weight of this
product (87 lbs).
• Appropriate operating tempraure is from -40 to 50 degrees celsius.
• Do not install this product in the place exposed to the direct
sunlight.
• Install the product in a clean, cool room.
• This product must not be installed or used at altitudes above
2500m.
• Do not install this product in places where ooding occurs.
-40°C
+50°C

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IQ System Controller 2 Quick Install Guide
19,7 in
19,7 in
9,7 in
6 in
35 in
36 in
6 in
6 in
This product must be installed wth clearance at the left, right, top,
bottom and front of the product as shown in the gure.
Section A - Mounting the product
Step 1
Minimum clearance

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IQ System Controller 2 Quick Install Guide
6
Step 2
Installing the mounting plate
Installing the mounting bracket and mount the IQ System Controller 2
as per instructions below. Please note the following before installing
1. The IQ System Controller 2 smart switch weighs 39.4 kg (87 lbs)
and will require two persons to lift the unit.
2. 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.
Provided in Accessory Kit
21
4
3
5
3. Risk of injury and equipment damage. Do not release the
IQ System Controller 2 until you ensure that the IQ System
Controller 2 is fully seated in the wall-mount bracket shelf.
4. 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.
5. Check with a structural engineer and local standards for local
requirements. Washers to be used between fastener heads and
wall-mount bracket.
Section A - Mounting the product

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IQ System Controller 2 Quick Install Guide
Step 3
Open the dead front
Before removing the deadfront , ensure the System Controller 2 is
completely de-energized.
Please note the following
1. Risk of equipment damage. Do not remove the pre-installed
solar shield attached to the enclosure door.
2. Risk of electric shock. To maintain the warranty, do not modify
the deadfront other than to remove or replace ller plates, as
needed.
The ground connection to deadfront needs to be
carefully disconnected before the deadfront can be
dismantled from the IQ System Controller 2
Philips screw
Section A - Mounting the product
1
2 3

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IQ System Controller 2 Quick Install Guide
Main lugs
Neutral terminals
Ground terminals
Load Center for
DER breakers
Back up lugs
AUX and RSD
terminals
Terminals for
DER cables
Internal schematic of
IQ System Controller 2
Once the deadfront is removed the IQ System Controller 2 looks
as below. It comes with an inbuilt neutral forming transformer,
microgrid interconection device , automatic transfer switch and a
panel board to mount plug in type breakers.
A detailed schematic can be found in the image below
Section B
Mounting the breakers

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IQ System Controller 2 Quick Install Guide
If the IQ System Controller 2 is used as a service entrance
equipment
• Do not remove the green colored ground neutral jumper
• Paste Labels provided in Accessory Kit
If the IQ System Controller 2 is NOT used as a service entrance
equipment
• Remove the Ground Neutral Jumper wire
Grounding Electrode Terminal
Grounding Electrode Terminal
Main/Service Disconnect
Suitable for use as Service Equipment
Main/Service Disconnect
Suitable for use as Service Equipment
Wiring for service entrance
Section B - Mounting the breakers

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IQ System Controller 2 Quick Install Guide
Install main and
back-up breakers
If breakers are being installed for mains and back up connections
the lugs should be removed and the breakers should be installed.
Before wiring the breaker ensure the IQ System Controller 2 is
completely De-energized.
Only Eaton CSR range breakers with ratings between 100-200A can
be used.
Back-up Connection Main Connection
Screw part of
Eaton Breaker Kit
Screw part of
Eaton Breaker Kit
Torx - T20
13.3 lb.in
Torx - T20
13.3 lb.in
3/8 in
35.4 lb.in
Screw from lugs
to be reused for
breakers
3/8 in
35.4 lb.in
Screw from lugs
to be reused for
breakers
Section B - Mounting the breakers
ENPHASE BREAKER SKU EATON BREAKER PART
BRK-100A-2P-240V CSR2100N
BRK-125A-2P-240V CSR2125N
BRK-150A-2P-240V CSR2150N
BRK-175A-2P-240V CSR2175N
BRK-200A-2P-240V CSR2200N

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IQ System Controller 2 Quick Install Guide
The IQ System Controller comes pre-installed with a 40A breaker
for the neutral forming transformer (NFT) . When a generator is not
being installed theNFT breaker need not be disturbed.
Installing DER breakers
IQ8 Systems without Generator
Breaker 1
NFT breaker
pre-installed in factory,
not to be disturbed
Breaker 2
IQ Gateway breaker -
factory installed in System
Controller 2
Breaker 3
Solar breaker
Use Hold down kit
(EP200G-NA-HD-200A)
along with this breaker
Red and Black wires
(pre wired) to be
connected to Storage and
Solar Breakers
Breaker 4
Storage breaker
Use Hold down kit
(EP200G-NA-HD-200A)
along with this breaker
ENPHASE BREAKER PART EATON BREAKER PART TORQUE
BRK-10A-2P-240V-B BR210B
27 lb.in
BRK-15A-2P-240V-B BR215B
BRK-20A-2P-240V-B BR220B
BRK-40A-2P-240V-B BR240B
BRK-60A-2P-240V BR260
BRK-80A-2P-240V BR280
Section B - Mounting the breakers

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IQ System Controller 2 Quick Install Guide
System Controller 2 allows for generator integration with the
Enphase Energy Systems. The breaker on the bottom right slot can
be sized and used to integrate the geenrator. For wiring schematic
on Generator control and wiring the power lines from generator the
subsequent section of installation guide.
Installing DER breakers
IQ8 Systems with Generator
Breaker 1
Remove the NFT breaker
and install a Quad breaker
(Eaton Part: BQC220240)
Breaker 2
Generator breaker
Use Hold down kit
(EP200G-NA-HD-200A)
along with this breaker
Breaker 3
Solar breaker
Use Hold down kit
(EP200G-NA-HD-200A)
along with this breaker
Breaker 4
Storage breaker
Use Hold down kit
(EP200G-NA-HD-200A)
along with this breaker
ENPHASE BREAKER
PART
EATON BREAKER
PART
TORQUE ON
WIRE
BRK-10A-2P-240V-B BR210B
27 Lb.in
BRK-15A-2P-240V-B BR215B
BRK-20A-2P-240V-B BR220B
BRK-40A-2P-240V-B BR240B
BRK-60A-2P-240V BR260
BRK-80A-2P-240V BR280
Red and Black wires
(pre wired) to be
connected to Storage and
Solar Breakers
Red and Black wires
(pre wired) to be
connected to Generator
Breakers
Section B - Mounting the breakers
L1 - IQ Gateway
L1 - NFT
L2 - NFT
L2 - IQ Gateway

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IQ System Controller 2 Quick Install Guide
Installing DER breakers
Non IQ8 Systems
The IQ System Controller comes pre-installed with a 40A breaker
for the neutral forming transformer (NFT) . When a generator is not
being installed theNFT breaker need not be disturbed.
Breaker 1
NFT breaker
pre-installed in factory,
not to be disturbed
Breaker 2
Remove Breaker from
System Controller 2 and
wire IQ Gateway to Breaker
in IQ Combiner
Breaker 3
Solar breaker
Red and Black wires
(pre wired) to be
connected to Storage and
Solar Breakers
Breaker 4
Storage breaker
Use Hold down kit
(EP200G-NA-HD-200A)
along with this breaker
ENPHASE BREAKER PART EATON BREAKER PART TORQUE ON
WIRE
BRK-10A-2P-240V-B BR210B
27 lb.in
BRK-15A-2P-240V-B BR215B
BRK-20A-2P-240V-B BR220B
BRK-40A-2P-240V-B BR240B
BRK-60A-2P-240V BR260
BRK-80A-2P-240V BR280
Section B - Mounting the breakers

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IQ System Controller 2 Quick Install Guide
CONDUIT LOCATION MAIN BACK UP DER
Bottom
Left wall
Right wall
Section C
Wiring
Drill conduits
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 Batery, IQ Combiner and generator
conductors may enter from the bottom, bottom-left or bottom-right
sides.
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.

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IQ System Controller 2 Quick Install Guide
AWG TORQUE (LB.IN)
14 -10 25
830
4 - 6 35
2 - 3 40
AWG TORQUE (LB.IN)
1/0 - 3 50
4 - 6 45
840
10 - 14 35
6 - 8 25
10 - 14 15
Battery wiring Generator wiringPV wiring
The DERs (IQ Battery, AC Combiner/Solar and generator) wires
need to be connected to the lugs at the bottom as indicated in the
images below.
Before connecting the wires refer the wiring table recommendation
and torque recommendation and also refer to local codes for any
specic local requirements.
1/8’’2-14 AWG 3/8’’300KCMIl to 14 AWG
DER wiring
Section C - Wiring