Generac Power Systems PWRcell 3 User manual

SAVE THIS MANUAL FOR FUTURE REFERENCE
Register your Generac product at:
WWW.GENERAC.COM
1-888-GENERAC
(1-888-436-3722)
Installation Manual
Generac PWRcell™ Battery
ON OFF
BATTERYDISCONNECT
008980
(000209b)
WARNING
Loss of life. This product is not intended to
be used in a critical life support application.
Failure to adhere to this warning could result
in death or serious injury.
Register your Generac product at:
WWW.GENERAC.COM
1-888-GENERAC
(888-436-3722)
Para español , visita: http://www.generac.com/service-support/product-support-lookup
Pour le français, visiter : http://www.generac.com/service-support/product-support-lookup

ii Installation Manual for Generac PWRcell Battery
Use this page to record important information about your Generac Product
Record the information found on your unit data label on this
page. See Serial Number Locations.
When contacting a Generac Products Authorized Service
Dealer (ASD) about parts and service, always supply the
complete model number and serial number of the unit.
Operation and Maintenance: Proper maintenance and care of
the energy storage system ensures a minimum number of
problems and keeps operating expenses at a minimum. It is the
operator’s responsibility to perform all safety checks, to verify
that all maintenance for safe operation is performed promptly,
and to have the equipment checked periodically by an ASD.
Normal maintenance, service and replacement of parts are the
responsibility of the owner/operator and, as such, are not
considered defects in materials or workmanship within the
terms of the warranty. Individual operating habits and usage
may contribute to the need for additional maintenance or
service.
Description Model Number Serial Number Date Purchased
Generac PWRcell™ Battery
Battery Module 1*Panasonic DCB-105
Battery Module 2*Panasonic DCB-105
Battery Module 3*Panasonic DCB-105
Battery Module 4*Panasonic DCB-105
Battery Module 5*Panasonic DCB-105
Battery Module 6*Panasonic DCB-105
*Panasonic DCB-105 modules must be registered at https://info.panasonic.com/Battery-Storage-Registration.html.
(000393a)
WARNING
CANCER AND REPRODUCTIVE HARM
www.P65Warnings.ca.gov.

Table of Contents
Installation Manual for Generac PWRcell Battery iii
Section 1: Safety Rules & General
Information
Introduction ..........................................................1
Read This Manual Thoroughly ....................................1
Safety Rules .........................................................1
How to Obtain Service .................................................1
General Hazards ..................................................2
Electrical Hazards ................................................3
Battery Hazards ...................................................4
Fire Hazards .........................................................4
Safety Shutdown ..................................................4
General Rules .......................................................5
Before You Begin ........................................................5
Standards Index ..........................................................5
Section 2: General Information
Specifications ......................................................7
Serial Number Locations ....................................8
Unit Dimensions .................................................8
About Generac PWRcell Battery ........................9
Component Locations .......................................10
Battery Disconnect Switch ...............................10
Battery Status LED ............................................10
Section 3: Location and Compliance
Location and Clearances ..................................11
Compliance ........................................................11
Section 4: Installing Generac PWRcell
Battery
Carton Contents .................................................13
Preparing Location ............................................13
Unboxing Generac PWRcell
Enclosure ...........................................................13
Installing and Leveling Wall Bracket ...............13
Placing Body onto Bracket and
Leveling Feet ......................................................15
Installing REbus wiring .....................................15
Connecting Blackstart Battery ...................................16
Installing Battery Modules ................................16
Installing Rear Modules .............................................17
Installing Grounding Tabs .........................................17
Installing Front Modules ............................................17
Installing Module Spacer (Generac PWRcell 3 and
Generac PWRcell 5 only) ..........................................18
Installing Retention Clips ...........................................18
Connecting COM Cables ...........................................19
Connecting Battery Power Cable .....................20
Installing Cover .................................................. 21
To remove the cover: ................................................21
Upgrading Generac PWRcell Battery ..............21
Using Vset Function ..................................................21
Recommended to maximize battery capacity: ...........22
Section 5: Commissioning
General Information ..........................................23
Commissioning Procedure ...............................23
Select System Operational Mode and Enable
Inverter ......................................................................23
Configure Generac PWRcell .....................................23
Enable Generac PWRcell ..........................................23
Enable Islanding and Configure Inverter for
Backup ......................................................................23
Operating Modes, Charging Parameters, and
Setpoints ............................................................23
Decommissioning .............................................. 24
Decommissioning Plan ..............................................24
Battery Recycling ......................................................24
Section 6: Troubleshooting
General Troubleshooting ..................................25
Section 7: Wiring Diagrams
Generac PWRcell 3 ............................................27
Generac PWRcell 4 ............................................28
Generac PWRcell 5 ............................................29
Generac PWRcell 6 ............................................30

iv Installation Manual for Generac PWRcell Battery
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Safety Rules & General Information
Installation Manual for Generac PWRcell Battery 1
Section 1: Safety Rules & General Information
Introduction
This installation manual provides instructions and
recommendations for installing and commissioning the
Generac PWRcell™ Battery. The Generac PWRcell
Battery is designed to house compatible lithium ion
battery modules, and connects directly to the Generac
PWRcell Inverter and other REbus™- compatible
components of the Generac PWRcell system.
This installation manual includes full details on
installation, wiring, safety, inverter integration, and other
key aspects of installing the Generac PWRcell Battery.
The companion document to this installation manual is
the Generac PWRcell Battery Owner’s Manual. See the
Generac PWRcell Battery Owner’s Manual for complete
information on user-configurable features.
The information in this manual is accurate based on
products produced at the time of publication. The
manufacturer reserves the right to make technical
updates, corrections, and product revisions at any time
without notice.
Read This Manual Thoroughly
(000100a)
WARNING
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
If any section of this manual is not understood, contact
the nearest Independent Authorized Service Dealer
(IASD) or Generac Customer Service at 1-888-436-3722
(1-888-GENERAC), or visit www.generac.com for start-
ing, operating, and servicing procedures. The owner is
responsible for correct maintenance and safe use of the
unit.
This manual must be used in conjunction with all other
supporting product documentation supplied with the
product.
SAVE THESE INSTRUCTIONS for future reference. This
manual contains important instructions that must be fol-
lowed during placement, operation, and maintenance of
the unit and its components. Always supply this manual
to any individual that will use this unit, and instruct them
on how to correctly start, operate, and stop the unit in
case of emergency.
Safety Rules
The manufacturer cannot anticipate every possible cir-
cumstance that might involve a hazard. The alerts in this
manual, and on tags and decals affixed to the unit, are
not all inclusive. If using a procedure, work method, or
operating technique that the manufacturer does not spe-
cifically recommend, verify that it is safe for others and
does not render the equipment unsafe.
Throughout this publication, and on tags and decals
affixed to the unit, DANGER, WARNING, CAUTION, and
NOTE blocks are used to alert personnel to special
instructions about a particular operation that may be haz-
ardous if performed incorrectly or carelessly. Observe
them carefully. Alert definitions are as follows:
(000001)
DANGER
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
(000002)
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
(000003)
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
NOTE: Notes contain additional information important to
a procedure and will be found within the regular text of
this manual.
These safety alerts cannot eliminate the hazards that
they indicate. Common sense and strict compliance with
the special instructions while performing the action or
service are essential to preventing accidents.
How to Obtain Service
When the unit requires servicing or repairs, contact Gen-
erac Customer Service at 1-888-GENERAC (1-888-436-
3722) or visit www.generac.com for assistance.
When contacting Generac Customer Service about parts
and service, always supply the complete model and
serial number of the unit as given on its data decal
located on the unit. Record the model and serial numbers
in the spaces provided on the front cover of this manual.

Safety Rules & General Information
2 Installation Manual for Generac PWRcell Battery
General Hazards
(000190)
DANGER
Loss of life. Property damage. Installation must always
comply with applicable codes, standards, laws and
regulations. Failure to do so will result in death
or serious injury.
(000187)
WARNING
Electrocution. Potentially lethal voltages are generated
by this equipment. Render the equipment safe before
attempting repairs or maintenance. Failure to do so
could result in death or serious injury.
(000182a)
WARNING
Equipment damage. Only qualified service personnel may
install, operate, and maintain this equipment. Failure to
follow proper installation requirements could result in death,
serious injury, and equipment or property damage.
(000155a)
WARNING
Electric shock. Only a trained and licensed electrician
should perform wiring and connections to unit. Failure
to follow proper installation requirements could result in
death, serious injury, and equipment or property damage.
WARNING
Risk of injury. Do not operate or service this machine
if not fully alert. Fatigue can impair the ability to
service this equipment and could result in death or
serious injury. (000215)
(000209b)
WARNING
Loss of life. This product is not intended to
be used in a critical life support application.
Failure to adhere to this warning could result
in death or serious injury.
(000598)
WARNING
Equipment damage. Connect only to REbus-compatible
devices. Never connect to any other power source.
Connecting to other power sources could result in
equipment damage.
IMPORTANT NOTE: See individual unit specifications
for required maintenance and run times pertaining to
use.
•Connecting Generac PWRcell to the electric utility
grid must only be done after receiving prior
approval from the utility company.
•Competent, qualified personnel should install,
operate, and service this equipment. Strictly com-
ply to local, state, and national electrical and build-
ing codes. When using this equipment, comply with
regulations established by the National Electrical
Code (NEC), CSA Standard; the Occupational
Safety and Health Administration (OSHA), or the
local agency for workplace health and safety.
•Protection against lightning surges in accordance
with local electric codes are the responsibility of the
installer.
•If working on this equipment while standing on
metal or concrete, place insulative mats over a dry
wood platform. Work on this equipment only while
standing on such insulative mats.
•Never work on this equipment while physically or
mentally fatigued.
•Any voltage measurements should be performed
with a meter that meets UL3111 safety standards,
and meets or exceeds overvoltage class CAT III.

Safety Rules & General Information
Installation Manual for Generac PWRcell Battery 3
Electrical Hazards
(000150)
DANGER
Electrocution. Never connect this unit to the electrical
system of any building unless a licensed electrician
has installed an approved transfer switch. Failure to
do so will result in death or serious injury.
(000604)
DANGER
Electrocution. PWRcell Battery front cover should be
removed by a qualified technician only. Removing
the front cover could result in death, serious injury,
equipment or property damage.
(000188)
DANGER
Electrocution. Do not wear jewelry while
working on this equipment. Doing so will
result in death or serious injury.
(000104)
DANGER
Electrocution. Water contact with a power
source, if not avoided, will result in death
or serious injury.
(000145)
DANGER
Electrocution. In the event of electrical accident,
immediately shut power OFF. Use non-conductive
implements to free victim from live conductor. Apply
first aid and get medical help. Failure to do so will
result in death or serious injury.
(000599)
DANGER
Electrocution. Turn battery disconnect OFF and
de-energize REbus before touching terminals..
Failure to do so will result in death, serious injury,
equipment and property damage.
(000123)
DANGER
Electrocution. Turn utility supply OFF before
working on utility connections of the transfer
switch. Failure to do so will result in death or
serious injury.
(000152)
DANGER
Electrocution. Verify electrical system is
properly grounded before applying power.
Failure to do so will result in death or serious
injury.
WARNING
(000257)
Electrocution. Refer to local codes and standards
for safety equipment required when working with a
live electrical system. Failure to use required safety
equipment could result in death or serious injury.
(000134a)
CAUTION
Equipment damage. Exceeding rated voltage and
current will damage the auxiliary contacts. Verify
that voltage and current are within specification
before energizing this equipment.
(000120)
CAUTION
Equipment damage. Verify all conductors are
tightened to the factory specified torque value.
Failure to do so could result in damage to the
switch base.

Safety Rules & General Information
4 Installation Manual for Generac PWRcell Battery
Battery Hazards
(000162)
WARNING
Explosion. Do not dispose of batteries in a fire.
Batteries are explosive. Electrolyte solution can cause
burns and blindness. If electrolyte contacts skin or eyes,
flush with water and seek immediate medical attention.
WARNING
(000228)
Environmental Hazard. Always recycle batteries at an
official recycling center in accordance with all local
laws and regulations. Failure to do so could result in
environmental damage, death, or serious injury.
(000601)
CAUTION
Equipment damage. Use ONLY manufacturer approved
battery modules. Using any other module could damage
Generac PWRcell Battery and may void the warranty.
Always recycle batteries in accordance with local laws and
regulations. Contact your local solid waste collection site
or recycling facility to obtain information on local recycling
processes. For more information on battery recycling, visit
the Battery Council International website at: http://
batterycouncil.org
Fire Hazards
WARNING
(000603)
Fire hazard. Never attempt to fight a fire yourself.
Evacutate the building and contact emergency services.
Inform dispatcher that lithium-ion batteries are in the
building. Failure to do so could result in death, serious
injury, or property or equipment damage.
WARNING
(000218)
Fire and explosion. Installation must comply with all
local, state, and national electrical building codes.
Noncompliance could result in unsafe operation,
equipment damage, death, or serious injury.
(000147)
WARNING
Risk of Fire. Unit must be positioned in a
manner that prevents combustible material
accumulation underneath. Failure to do so
could result in death or serious injury.
Safety Shutdown
(000600)
DANGER
Electrocution. Initiate a system-wide safety shutdown
and turn PWRcell Disconnect Switch OFF on all
connected batteries before performing service. Failure
to do so will result in death, serious injury, equipment
and property damage.
See Figure 1-1. Shutdown button (A) on the Generac
PWRcell Inverter control panel activates Safety
Shutdown. Safety Shutdown signals connected devices
to shutdown and limit output voltage to a safe level. An
external shutdown button may also be installed, given
appropriate labeling. See the Generac PWRcell Inverter
Installation Manual for more information.
To enter Safety Shutdown, press and hold Shutdown (A).
Safety shutdown LED (B) will illuminate and LCD screen
(C) will indicate Safety Shutdown has been initiated.
REbus Inverter
Internet
Shutdown
(hold)
009918
A
C
B
Figure 1-1. Safety Shutdown Button (Located on
Inverter Control Panel)
In a system configured to provide backup power, the
REbus™ DC voltage will remain energized on loss of AC
grid power. Upon entering Safety Shutdown, a shutdown
signal will be transmitted to all devices connected to
REbus. In Safety Shutdown:
•Generac PWRcell Inverter will disconnect from the
grid.
•Generac PWRcell Inverter will stop sourcing power
to REbus, and immediately disable all sources on
REbus by sending a global shutdown signal.
•All Generac PV Link Optimizers will disconnect
their output.
•Safety Shutdown LED (B) will be illuminated to
show that the inverter has entered safety shut-
down. REbus DC bus voltage will be displayed on
the inverter screen.

Safety Rules & General Information
Installation Manual for Generac PWRcell Battery 5
General Rules
(000190)
DANGER
Loss of life. Property damage. Installation must always
comply with applicable codes, standards, laws and
regulations. Failure to do so will result in death
or serious injury.
(000638)
DANGER
Loss of life. Only qualified personnel may install this battery
system. Installation of a PWRcell Battery by a homeowner is
prohibited. Installation by unqualified personnel will result
in death, serious injury, equipment or property damage.
WARNING
Environmental Hazard. Always recycle batteries at an
official recycling center in accordance with all local
laws and regulations. Failure to do so could result in
environmental damage, death or serious injury.
(000228)
•Follow all safety precautions in the owner’s manual,
installation guidelines manual, and other documents
included with the equipment.
•Never energize a new system without opening all dis-
connects and breakers.
•Always consult local code for additional requirements
for where unit is being installed.
•Incorrect installation can result in personal injury and
damage to the unit. It may also result in the warranty
being suspended or voided. All instructions listed
below must be followed including location clearances
and pipe sizes.
Before You Begin
•Contact your local utility provider for approval before
installation. Install the Generac PWRcell Battery in
accordance with all utility installation requirements.
•Contact local inspector or city hall to be aware of all
federal, state, and local codes which could impact
installation. Secure all required permits before installing.
•Fully comply with all relevant NEC, NFPA, and OSHA
standards, as well as all federal, state, and local
building and electric codes. This unit must be installed
in accordance with current NFPA and ICC standards,
and any other federal, state, and local codes for
minimum distances from other structures.
Standards Index
(000209b)
WARNING
Loss of life. This product is not intended to
be used in a critical life support application.
Failure to adhere to this warning could result
in death or serious injury.
Strictly comply with all applicable national, state, and local
laws, as well as codes or regulations pertaining to the
installation of the Generac PWRcell system. Use the most
current version of applicable codes or standards relevant to
local jurisdiction, equipment used, and installation site.
NOTE: Not all codes apply to all products and this list is not
all-inclusive. In the absence of pertinent local laws and
standards, the following publications may be used as a
guide (these apply to localities which recognize NFPA and
ICC).
1. National Fire Protection Association (NFPA) 70: The
NATIONAL ELECTRIC CODE (NEC) *
2. NFPA 855: Standard for the Installation of Stationary
Energy Storage Systems
3. NFPA 10: Standard for Portable Fire Extinguishers *
4. NFPA 70E: Standard For Electrical Safety In The
Workplace *
5. NFPA 220: Standard on Types of Building
Construction *
6. NFPA 5000: Building Code *
7. International Building Code **
8. International Fire Code
9. International Residential Code
10. Agricultural Wiring Handbook ***
11. Article X, NATIONAL BUILDING CODE
12. ASAE EP-364.2 Installation and Maintenance of Farm
Standby Electric Power ****
This list is not all-inclusive. Check with the Authority Having
Local Jurisdiction (AHJ) for any local codes or standards
which may be applicable to your jurisdiction. The above
listed standards are available from the following Internet
sources:
* www.nfpa.org
** www.iccsafe.org
*** www.rerc.org Rural Electricity Resource Council P.O.
Box 309 Wilmington, OH 45177-0309
**** www.asabe.org American Society of Agricultural &
Biological Engineers 2950 Niles Road, St. Joseph, MI 49085

Safety Rules & General Information
6 Installation Manual for Generac PWRcell Battery
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Installation Manual for Generac PWRcell Battery 7
General Information
Section 2: General Information
Specifications
Description Units Generac
PWRcell 3
Generac
PWRcell 4
Generac
PWRcell 5
Generac
PWRcell 6
Energy
Total Energy kWh 10 13.5 17 20
Usable Energy kWh 8.6 11.4 14.3 17.1
Power
Continuous*kW 3.4 4.5 5.6 6.7
60 minutes** kW 4.2 5.6 7.0 8.4
2 minutes** kW 5.0 6.7 8.4 10.0
Battery Modules
Number - 3 4 5 6
DC Voltage (per module) VDC 46.8
REbus
Communication Protocol - REbus DC Nanogrid
Voltage: Input/Output*** VDC 360-420
Round-Trip Efficiency (DC to DC) % 96.5
Temperature
Operating Temperature Limits °F (°C) 41-113 (5-45)
Recommended Temperature Range °F (°C) 54-86 (13-30)
Installation Altitude
Maximum Installation Altitude**** ft (m) 9834 (3000)
Weight
Enclosure lb (kg) 115 (52)
Installed lb (kg) 280 (127) 335 (152) 390 (178) 445 (202)
Compliance
UL - UL 9540, UL 1973, UL 1642,
CSA - CSA 22.2
*Full cycle: 0% to 100% to 0% SoC @ 30° C
** Discharge @ 25° C
***380VDC Nominal
****Module warranty void if installed above limit.
Specifications are subject to change without notice. Refer to the product specification sheet for complete list.

8 Installation Manual for Generac PWRcell Battery
General Information
Serial Number Locations
Refer to Figure 2-1 to locate unit serial number and
nameplate. Record the information from these tags so it
is available if the tags are lost or damaged. When
ordering parts or requesting assistance, you may be
asked to provide this information.
A
0009891
Figure 2-1. Serial Number Location
Unit Dimensions
B
A
C
0009892
Figure 2-2. Unit Dimensions
A 68.375 in (1737 mm)
B 22 in (558 mm)
C 9.87 in (251 mm)

Installation Manual for Generac PWRcell Battery 9
General Information
About Generac PWRcell Battery
The Generac PWRcell Battery is the storage component
of the Generac PWRcell system. The Generac PWRcell
Battery can be used for grid-connected solar applications
such as self-supply, rate arbitrage and clean backup
power. The Generac PWRcell Battery is designed to
work seamlessly with Generac PV Link Optimizers and
the Generac PWRcell Inverter to form the Generac
PWRcell system for grid-tie solar-plus-storage.
All Generac PWRcell products use the REbus™ 380VDC
nanogrid to connect energy sources, storage and loads.
The REbus nanogrid automates the flow of power to
enable plug-and-play setup and operation of Generac
PWRcell equipment.
In Figure 2-3, a REbus compatible Generac PWRcell
Inverter (E) is directly connected to Generac PV Link
Optimizers (B) and the Generac PWRcell Battery (C) on
the DC (REbus) line (D). To the right of the inverter are
AC lines: 240VAC or 208VAC for grid and home loads,
and critical load support up to 50A.
009893
A
B
C
D
E
FG
H
.
Figure 2-3. Generac PWRcell System Example
ASolar Panels EGenerac PWRcell Inverter
BGenerac PV Link Optimizers FGrid
CGenerac PWRcell Battery GLoads
DREbus HProtected Loads
.

10 Installation Manual for Generac PWRcell Battery
General Information
Component Locations
ON OFF
BATTERYDISCONNECT
0009890
C
D
E
B
A
Figure 2-4. Component Locations
ABattery Disconnect Switch
BBattery Status LED
CIntake Filter
DFront Cover
EExhaust Vent
Battery Disconnect Switch
(000600)
DANGER
Electrocution. Initiate a system-wide safety shutdown
and turn PWRcell Disconnect Switch OFF on all
connected batteries before performing service. Failure
to do so will result in death, serious injury, equipment
and property damage.
See Figure 2-4. Battery Disconnect switch (A)
disconnects the battery string from the battery monitoring
system (BMS) electronics.
NOTE: Battery Disconnect can be locked in the OFF
position if required.
NOTE: Turn Battery Disconnect OFF whenever system
will be powered down and left inactive for an extended
period of time.
Battery Status LED
See Figure 2-4. The color and strobing interval of LED
(B) communicates the Generac PWRcell Battery status.
Table 2-1. Battery Status LED
LED State Interpretation (strobe interval)
Green, 3 sec
solid at power up
Enabled, operation starting
Red, 3 sec solid
at power up
Disabled
Red/green,
alternating
Initializing, connecting battery and
REbus, system energizing
Green, solid Enabled, charging
Green, strobe Enabled, standby (3 sec)
Green, flashing Enabled, discharging
Orange, solid Waiting
Orange, strobe Asleep (8 sec)
Red, strobe Disabled (3 sec)
Red, flashing Error state

Location and Compliance
Installation Manual for Generac PWRcell Battery 11
Section 3: Location and Compliance
Location and Clearances
Install the Generac PWRcell Battery in dwelling units in
the following permitted locations only:
•Attached garages separated from dwelling unit
habitable spaces in accordance with local building
code.
•Detached garages and accessory structures.
•Enclosed utility closets and storage or utility
spaces.
•Basements.
NOTE: Refer to the local Building Code for permitted
locations for commercial installations.
When selecting a location, consider the following:
• Install in protected indoor locations only. If the room
or space where the Generac PWRcell Battery is to
be installed is not finished, the wall and ceilings of
the room or space shall be protected with not less
than 5/8 in (15.875 mm) Type X gypsum board.
• Do not install in any habitable room within a dwell-
ing unit.
•Install only in a clean, dry, well ventilated location.
•Do not allow bottom or front vents to become
blocked.
•The Generac PWRcell Battery installation location
must meet the working space requirements in NEC
Article 110.26.
•If installed in a garage or other location where the
Generac PWRcell Battery could be damaged by a
vehicle, the Generac PWRcell Battery must be pro-
tected by approved barriers that are installed in
accordance with local building code. Consult with
your local AHJ to verify if barriers are required.
•Interconnected smoke alarms must be installed
throughout the dwelling unit, including rooms,
attached garages, and areas in which the Generac
PWRcell Battery is installed in accordance with
local building codes. If the Generac PWRcell Bat-
tery is installed in an attached garage or area
where smoke alarms cannot be installed in accor-
dance with their listing, an interconnected listed
heat alarm must be installed and connected to the
smoke alarm system in accordance with local
building code.
•Do not expose the Generac PWRcell Battery to
extreme temperatures. See Specifications for rec-
ommended and acceptable operating tempera-
tures. Operating the Generac PWRcell Battery
outside of the recommended range may degrade
performance.
NOTE: Consider year-round temperature extremes
when choosing a location. In extreme climates, always
install Generac PWRcell in a conditioned space. Generac
recommends installing Generac PWRcell in a condi-
tioned space regardless of climate.
•See Table 3-1. Ensure minimum clearances are
met.
Table 3-1. Minimum Airspace Clearances
Sides 2” Recommend at least 2” on each side
to operate cover.
Top 3” Recommend at least 3” on top so
installer can lift body onto mounting
bracket.
Front 36” Recommend at least 36” in front for
maintenance/service.
Compliance
(000190)
DANGER
Loss of life. Property damage. Installation must always
comply with applicable codes, standards, laws and
regulations. Failure to do so will result in death
or serious injury.
WARNING
(000257)
Electrocution. Refer to local codes and standards
for safety equipment required when working with a
live electrical system. Failure to use required safety
equipment could result in death or serious injury.
(000182a)
WARNING
Equipment damage. Only qualified service personnel may
install, operate, and maintain this equipment. Failure to
follow proper installation requirements could result in death,
serious injury, and equipment or property damage.
Follow all instructions included in this manual and use
appropriate practices for all product wiring and installa-
tion.
NOTE: It is the responsibility of the installer to ensure
conformance with NFPA70E, Article 120, lockout/tagout
procedures. If the Generac PWRcell Inverter is installed
out of sight of the AC distribution panel, a correctly rated
disconnect switch must be installed within sight of the
PWRcel Inverter. In the situation where the Generac
PWRcell Inverter is installed out of sight of the Generac
PWRcell Battery product, a correctly rated DC disconnect
switch must be installed within sight of the Generac
PWRcell Battery.

Location and Compliance
12 Installation Manual for Generac PWRcell Battery
Note on DC Wiring and the NEC
Some electricians or installers may be unfamiliar with DC
wiring in a residential setting. Note the following:
•NEC 215.12(C)(2) for correct DC wiring coloring.
•NEC 210.5(C)(2) for identification of DC conduc-
tors carrying more than 50V.
Always adhere to applicable codes when marking and
installing DC conductors.
See Table 3-2. For all REbus DC wiring observe the fol-
lowing coloring convention:
Table 3-2. REbus DC Wiring Coloring Convention
Wire Color
REbus + (RE+) Red
REbus - (RE-) Black or Blue
Ground (GND) Green or bare
NOTE: Mark or flag all conductors as appropriate.

Installing Generac PWRcell Battery
Installation Manual for Generac PWRcell Battery 13
Section 4: Installing Generac PWRcell
Battery
Carton Contents
•Wall bracket
•Body (including pre-installed electronics package
and battery jumpers)
•Cover
•Hardware kit
•Generac PWRcell Battery Installation Manual and
Generac PWRcell Battery Owner’s Manual
NOTE: Lithium ion battery modules are shipped sepa-
rately. Keep battery modules in their original packaging
until installation. Observe storing and stacking require-
ments.
Preparing Location
•Sweep away any debris or dust that might get
pulled into the Generac PWRcell Battery bottom
intake vent. See Component Locations.
•Verify grade is smooth. A sharply sloping or
irregular floor surface may hinder installation of the
front cover.
Unboxing Generac PWRcell
Enclosure
1. Lay package on one of the long edges.
2. Remove top cardboard cap.
3. Remove Documentation and Hardware box and
set aside in a safe place.
4. Remove cardboard sleeve.
5. Lay unit onto its back.
6. Remove bottom cardboard cap.
7. Remove the Generac PWRcell Battery front cover.
NOTE: To remove, slide cover toward the top of the unit,
swing the bottom out, and pull cover down.
8. Set cover aside in a safe place.
NOTE: Do not adjust the feet at this time. The feet are
shipped pre-positioned to ensure sufficient clearance for
front cover.
Installing and Leveling Wall Bracket
NOTE: The Generac PWRcell Battery is designed to be
installable by one or two people without requiring heavy
equipment.
NOTE: Use caution when handling heavy parts and bat-
tery modules. Lift heavy parts in teams if necessary to
prevent injury.
1. Verify location adheres to the Generac PWRcell
Battery location requirements. See Location and
Clearances for guidelines.
NOTE: See Figure 4-2, Figure 4-3, and Figure 4-4 for
the Generac PWRcell Battery dimensions.
2. Verify screws are appropriate for wall surface and
can adequately secure the unit to the wall. See
Specifications for unit weight.
3. See Figure 4-1. Mount bracket to wall with the fol-
lowing requirements:
•Bottom edge (A) must be 29.625 in (752 mm) off
the floor.
•Each horizontal brace requires a minimum of two
fasteners.
•All fasteners must engage with a structural
member.
•Bracket must be level.
4. Rough in field wiring if applicable. See Figure 4-2
and Figure 4-4 for knockout locations (B) and
dimensions.
A
009920
Figure 4-1. Mounting Bracket

22.2 in
563 mm
42.8 in
1.09 m
1.23 in
31 mm
29.6 in
0.751 m
9.4 in
239 mm
13.4 in
339 mm
B
A
009921
Installing Generac PWRcell Battery
14 Installation Manual for Generac PWRcell Battery
Figure 4-2. Generac PWRcell Battery Rear View
009925
67.7 in
1.7 m
22.2 in
563.1 mm
Figure 4-3. Generac PWRcell Battery Front View
9.9 in
251.2 mm
1.3 in
29.2 mm
41.6 in
1.06 m
57.6 in
1.46 m
B
009924
Figure 4-4. Generac PWRcell Battery Side View

Installing Generac PWRcell Battery
Installation Manual for Generac PWRcell Battery 15
Placing Body onto Bracket and
Leveling Feet
1. See Figure 4-5. Lift body (A) onto bracket (B).
Keep body tight to the wall while lowering body
onto bracket. Verify bracket tabs (C) hook into
body pockets (D).
A
B
DC
009656
Figure 4-5. Mounting Bracket (1 of 2)
2. See Figure 4-6. Align body slots (E) with wall
bracket holes (F).
E
F
009656
Figure 4-6. Mounting Bracket (2 of 2)
3. Install body to bracket with two M4x8 screws in
each horizontal bracket brace. Start screws. Do not
tighten.
4. Check unit for plumb side to side. Adjust feet as
necessary.
5. Verify unit is standing on feet with body resting on
wall bracket.
IMPORTANT NOTE: Do not lift the body off the
bracket by over-lengthening the feet.
6. Verify there is minimum 1.75 in (4.45 cm) gap
between the bottom of the body and the floor.
7. Tighten machine screws to bracket and torque to
13 in-lbs.
8. Verify feet have not lifted from floor.
9. Tighten feet jam nuts to lock them in place.
Installing REbus wiring
(000606)
DANGER
Electrocution. Put the Generac PWRcell Inverter into
Safety Shutdown before installing wiring. If there are any
other batteries connected to REbus, toggle their front
Battery Disconnect switches to OFF. Failure to do so
will result in death or serious injury.
.
(000598)
WARNING
Equipment damage. Connect only to REbus-compatible
devices. Never connect to any other power source.
Connecting to other power sources could result in
equipment damage.
(000607)
WARNING
Equipment damage. Never connect REbus conductors to
ground. Connecting Rebus condutors to ground could
result in equipment damage.
When installing REbus wiring:
•Wiring must be installed in accordance with Article
706 in the NEC.
•Wiring must comply with local electrical codes
•Wiring must be grounded according to local codes.
When required, grounding is the responsibility of
the installer. For proper REbus communication,
ensure the enclosure is securely bonded to the
Generac PWRcell Inverter via the grounding bar in
the Generac PWRcell Inverter wiring compartment.
•Wiring must be protected from exposed metal
edges by using appropriate bushings, fittings, and
restraints.
•Wiring must adhere to specifications in Table 4-1.
Table 4-1. Wiring Specifications
Specification Min Max Units
Allowable wire size 10 6 AWG
Torque 13.3 (1.5) 15.9 (1.8) lb-in (N-m)
Strip length 3/8 (10) in (mm)
Temperature rating 90 C

Installing Generac PWRcell Battery
16 Installation Manual for Generac PWRcell Battery
To install REbus wiring:
1. See Figure 4-7. Install REbus conductors to their
terminal blocks: RE+ to red (A), RE- to blue (B).
2. Install equipment grounding conductor to green ter-
minal block (C).
3. If required, route field wiring conductors through
the grommet wiring chase baffle (D).
NOTE: Do not route wires around the baffle.
4. At the Generac PWRcell Inverter, install RE+ and
RE- conductors to any unused 30A REbus breaker.
5. Secure equipment grounding conductor to the
Generac PWRcell Inverter ground bar.
A
C
B
D
009928
Figure 4-7. REbus Wiring
Connecting Blackstart Battery
1. See Figure 4-8. Connect blackstart battery lead to
battery terminal (E).
NOTE: One lead is already connected to terminal (F).
2. Record model, serial number, and date of pur-
chase on front cover of this manual.
F
009928
E
Figure 4-8. Blackstart Battery Connections
Installing Battery Modules
NOTE: Record battery module serial numbers prior to
installation.
See Figure 4-9. When installing battery modules, install
top, rear module (A) first, regardless of configuration.
A
009900
Figure 4-9. Installing Battery Modules
See Figure 4-10 for the order of battery module and
spacer installation for Generac PWRcell 3 (B), Generac
PWRcell 4 (C), Generac PWRcell 5 (D), and Generac
PWRcell 6 (E).
NOTE: Module spacers (F) are required on Generac
PWRcell 3 (B) and 5 (D) configurations.
1
2
3
4
1
2
3
4
1
2
3
4
5
6
1
2
3
4
5
6
009899
ED
CB
F
F
Figure 4-10. Battery Module/Spacer Order of Installation