Generac Power Systems PWRcell X7600 Series 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™ Inverter
009954
(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:
https://register.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 Inverter
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 an Independent Authorized Service Dealer (IASD) or Generac Customer Service, always supply the complete
model number and serial number of the unit.
Table 1: Generac PWRcell Inverter Important Information
Unit Model Number
Unit Serial Number
Date Purchased
Commissioning Date
(000393a)
WARNING
CANCER AND REPRODUCTIVE HARM
www.P65Warnings.ca.gov.

Installation Manual for Generac PWRcell Inverter iii
Section 1: Safety Rules & General
Information
Introduction ..........................................................1
Safety Rules .........................................................1
General Hazards ..................................................2
Electrical Hazards ................................................3
Safety Shutdown ..................................................3
Section 2: General Information
Specifications ......................................................5
Ratings ..................................................................5
Serial Number Location ......................................6
Unit Dimensions .................................................6
About Generac PWRcell Inverters .....................6
Component Locations .........................................7
Inverter Control Panel .........................................7
LED Indicators .....................................................7
Section 3: Location and Compliance
Location ................................................................9
Compliance ..........................................................9
Safety Shutdown ..................................................9
Voltage and Frequency Trip Thresholds .........10
Section 4: Installing PWRcell Inverter
Mounting the Inverter ........................................11
Section 5: Electrical Connections
Generac PWRcell Inverter Wiring
Compartment .....................................................13
Accessing Wiring Compartment ......................13
Knockout Dimensions and Locations ............. 14
Wiring Guidelines ..............................................15
Grounding Bar Wiring .......................................15
DC Wiring ........................................................... 16
AC Wiring ........................................................... 16
Protected Load ..................................................17
Current Transformers (CTs) .............................18
Other Accessories .............................................20
Section 6: Commissioning and Setup
System Configuration ....................................... 21
Enabling Islanding ............................................. 21
General Information ..........................................21
Commissioning the System .............................21
Generac REbus Beacon Setup .........................23
Ethernet Setup ...................................................26
Serial Number and Registration .......................28
Section 7: Maintenance
Service ................................................................29
Accessing Wiring Compartment ......................29
Replacing Fuses ................................................29
Section 8: Troubleshooting
General Troubleshooting ..................................31

iv Installation Manual for Generac PWRcell Inverter
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Safety Rules & General Information
Installation Manual for Generac PWRCell Inverter 1
Section 1: Safety Rules & General Information
Introduction
Thank you for purchasing a Generac PWRcell™ Inverter.
The Generac PWRcell Inverter is a storage-ready
inverter that connects to the Generac PV Link™ and
Generac PWRcell Batteries to form the Generac
PWRcell system.
This manual provides instructions for installing the
Generac PWRcell Inverter, including mounting, wiring,
and battery integration information. The companion
document to this installation manual is the Generac
PWRcell Inverter Owner’s Manual. See the owner’s
manual for complete information on programming and
configuring the Generac PWRcell Inverter.
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 assis-
tance. 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
hazardous 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
For assistance, contact the nearest Independent Autho-
rized Service Dealer (IASD) or Generac Customer Ser-
vice at 1-888-436-3722 (1-888-GENERAC), or visit
www.generac.com.
When contacting an IASD or Generac Customer 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 pro-
vided on the front cover of this manual.

Safety Rules & General Information
2 Installation Manual for Generac PWRCell Inverter
General Hazards
(000188)
DANGER
Electrocution. Do not wear jewelry while
working on this equipment. Doing so will
result in death or serious injury.
Automatic start-up. Disconnect utility power and
render unit inoperable before working on unit.
Failure to do so will result in death or serious injury.
(000191)
DANGER
(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.
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 to the DC bus. Never connect to any other DC
power source. Connecting to other DC power sources
could result in equipment 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.
(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.
(000640)
WARNING
Equipment damage. Connecting inverter to electric utility grid
must only be done after receiving prior approval from utility
company. Failure to do so could result in equipment or property
damage.
•Connecting Generac PWRcell Inverter to the elec-
tric utility grid must only be done after receiving
prior approval from the utility company.
•Only 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 is 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 Inverter 3
Electrical Hazards
(000104)
DANGER
Electrocution. Water contact with a power
source, if not avoided, 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.
(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)
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.
DANGER
(000152)
DANGER
Electrocution. Verify electrical system is
properly grounded before applying power.
Failure to do so will 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.
NOTE: A loss of grid power will not de-energize REbus
in a system configured to island or provide backup power.
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.
NOTE: An additional remote safety shutdown may be
required to be installed for local compliance.
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)
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
4 Installation Manual for Generac PWRCell Inverter
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Installation Manual for Generac PWRcell Inverter 5
General Information
Section 2: General Information
Specifications
Description Units X7600 Series X11400 Series
Max. cont. AC power @ 50ºC kW 7.6 11.4
Grid Voltage VAC 240 (1-ph) 120/208 (3-ph)
Max cont. REbus current (peak) A 20 30
Max cont. grid output current A 32
AC terminals wire size AWG 14 to 6
DC terminals wire size AWG 18 to 6
STOP terminals wire size AWG 28 to 16
Gen Sense/Gen Start wire size AWG 30 to 12
Weight lb (kg) 64 (29)
Thermal management - forced convection
Temperature range ºF (ºC) -4 to +122 (-20 to +50)
Weatherization rating - NEMA 3R
Enclosure Material - powder-coated steel
Ratings
Description Units Min Nominal Max
Maximum Input Voltage (nanogrid) V 420
Range of Input Operating Voltage (nanogrid) V 360 400
Maximum input current (nanogrid) A 20
Maximum input short circuit current (nanogrid) A 30
Maximum input source backfeed current to input
source (nanogrid) A30
Output power factor rating (AC) - 1
Operating Voltage range (AC) 2ph V, rms 108 130
Operating Voltage range (AC) 3ph V, rms 106 132
Operating frequency range or single frequency Hz 59.6 60.4
Nominal output voltage (AC) V, rms 120/240 & 208V 3ph
Normal output frequency (AC) Hz 60
Maximum continuous output current (AC) A, rms 32
Maximum output overcurrent protection A 50
Max output fault current and duration A/ms 50 / 17
Utility interconnection voltage and frequency trip
limits and trip times
Trip voltage and frequency limits
Trip Voltage Accuracy
Trip Time Accuracy - 2% +/-2 cycles
Normal operation temperature range ºF (ºC) -4 (-20) 122 (50)
Output power temperature derating and maxi-
mum full power operating ambient
ºF (ºC) -4 (-20) 122 (50)
Peak Efficiency % 97.5
CEC Weighted Efficiency % 97
Specifications are subject to change without notice. Refer to the product specification sheet for complete list.
See Voltage and Frequency Trip Thresholds for more information.

6 Installation Manual for Generac PWRcell Inverter
General Information
Serial Number Location
Refer to Figure 2-1 to locate unit serial number (A).
Record the information from this tag in Table 1: Generac
PWRcell Inverter Important Information on the inside
front cover of this manual. When requesting assistance
you may be asked to provide this information.
A
009954
Figure 2-1. Serial Number Location
Unit Dimensions
1
B
A
C
009955
Figure 2-2. Unit Dimensions
A
B
C
About Generac PWRcell Inverters
The Generac PWRcell Inverter connects to the Generac
PV Link™ and Generac PWRcell Battery to form the
Generac PWRcell system for grid-interactive solar-plus-
storage.
Upon the loss of grid power, Generac PWRcell Inverters
disconnect from the grid and provide AC power to
support protected loads when configured to do so.
All Generac PWRcell products use the REbus™ 380
VDC 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. For more information about REbus,
visit www.generac.com.
In Figure 2-3 Generac PWRcell Inverter (E) is directly
connected to Generac PV Link (B) and Generac PWRcell
Battery (C) on DC (REbus) line (D). To the right of the
inverter are AC lines: 120/240 VAC for grid and home
loads (G), and protected loads (H) support up to 50 A.
009893
A
B
C
D
E
FG
H
.
Figure 2-3. Generac PWRcell System Example
ASolar Panels EGenerac PWRcell Inverter
BGenerac PV Link FGrid
CGenerac PWRcell Battery GLoads
DREbus HProtected Loads
24.5 in (622 mm)
19.25 in (489 mm)
8 in (203 mm)

Installation Manual for Generac PWRcell Inverter 7
General Information
Component Locations
009656
A
B
C
Figure 2-4. Component Locations
AControl panel
BIntake filter
CExhaust vent
Inverter Control Panel
REbus Inverter
Internet
Shutdown
(hold)
009894
A
D
C
B
G
E
F
Figure 2-5. Inverter Control Panel
ALCD display
BNavigation keys
CREbus status LED
DInverter LED
ESafety Shutdown
FSafety Shutdown LED
GInternet LED
See Figure 2-5. Generac PWRcell is controlled through
the Generac PWRcell Inverter control panel. The inverter
control panel is used for adjusting system settings and for
interacting with devices.
LED Indicators
See Figure 2-5 for LED locations.
REbus Status LED
REbus Status LED (C) communicates REbus nanogrid
status through LED color.
•Green – all devices are functioning normally and
are either generating power or ready to generate
power.
•Yellow – no devices are connected or no devices
are enabled.
•Red – one or more REbus device has a fault that
requires attention before operation will continue.
NOTE: A red LED can also indicate a fault with the
REbus nanogrid itself. See display (A) for more
information about the specific fault detected.
Inverter LED
Inverter LED (D) communicates the status of the utility
grid and/or inverter through LED color and state.
•Green – utility is connected and within normal
operational voltage and frequency.
•Blinking green – system is in standby mode,
powering up, or initializing.
•Yellow – utility grid is not within normal conditions,
but user intervention typically is not required. The
inverter will restart as soon as the utility grid
returns to normal conditions.
•Red – a serious fault with the utility grid or inverter
has been detected and user attention is required
before the unit will resume operation. See display
(A) for more information about the specific fault
detected.
•No light – the inverter is disabled or powered off.
Safety Shutdown LED
Safety Shutdown LED (F) is illuminated when the system
is in Safety Shutdown mode. Safety Shutdown may be
initiated either from the Safety Shutdown button on the
unit or an externally-installed shutdown switch. See
Safety Shutdown.
Internet LED
Internet LED (D) is illuminated when the inverter is
connected to a router and has an IP address. See
Ethernet Configuration.
NOTE: A blue Internet LED does not mean that the
inverter has connected with the Generac server.

8 Installation Manual for Generac PWRcell Inverter
General Information
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Location and Compliance
Installation Manual for Generac PWRcell Inverter 9
Section 3: Location and Compliance
Location
When installing the Generac PWRcell Inverter, consider
the following:
•The unit can be installed in indoor or outdoor loca-
tions.
•The unit must be readily accessible.
•The inverter installation location must meet the
working space requirements in NEC Article 110.26.
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 on DC Wiring and the NEC
Some electricians or installers may be unfamiliar with DC
wiring in a residential setting. Note the following:
•NEC 690.31(G) for DC PV circuits in buildings
•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 3-1: REbus DC Wir-
ing Coloring Convention. Mark or flag all conductors as
appropriate.
•It is recommended that REbus (+) conductors NOT
be green, white, gray, blue, or black.
•It is recommended REbus (-) conductors NOT be
green, white, gray, or red.
Table 3-1. REbus DC Wiring Coloring Convention
Wire Color
REbus + (RE+) Red
REbus - (RE-) Black or Blue
Ground (GND) Green or bare
Safety Shutdown
The Generac PWRcell Inverter is equipped with a safety
shutdown function to help installers comply with the rapid
shutdown requirements given in Article 690.12 of the
National Electrical Code.
See Safety Shutdown for information on how to initiate
and exit a shutdown.
See External Safety Shutdown Switch for information
on installing and using an external safety switch to initiate
a safety shutdown.

Location and Compliance
10 Installation Manual for Generac PWRcell Inverter
Voltage and Frequency Trip Thresholds
This unit or system is provided with fixed trip limits and
shall not be aggregated above 30 kW on a single point of
common connection.
All Generac PWRcell Inverters are shipped from the fac-
tory in compliance with all UL1741 requirements, includ-
ing IEEE1547. If your installation requires compliance to
a different standard, such as UL1741SA, 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 assistance.
Voltage Trip Thresholds
See Table 3-2 for the default fixed voltage trip setpoints.
All over voltage and under voltage trip conditions result in
a 300-second restart delay time after the trip threshold
has been exceeded for the listed number of cycles.
Frequency Trip Thresholds
See Table 3-2 for the default fixed frequency trip set-
points. All over frequency and under frequency trip condi-
tions result in a 300-second restart delay time after the
trip threshold has been exceeded for the listed number of
cycles.
Table 3-2. Voltage Trip and Frequency Thresholds
Voltage Trip Thresholds Frequency Trip Thresholds
Threshold Threshold
(% of nominal) No. of Cycles Threshold Hz Over/ Under Nominal No. of Cycles
OV1 110 120 OF1 0.5 120
OV2 120 10 OF2 2 6
OV3 130 1 OF3 1.3 0
OV4 999* 1 OF4 0** 1
UV1 88 120 UF1 0.5 120
UV2 50 10 UF2 2 10
UV3 0 1 UF3 0** 1
UV4 0 1 UF4 0** 1
*Value of 999 indicates a disabled threshold for voltage trips
**Value of zero indicates a disabled threshold for frequency trips

Installing PWRcell Inverter
Installation Manual for Generac PWRcell Inverter 11
Section 4: Installing PWRcell Inverter
Mounting the Inverter
(000641)
WARNING
Equipment damage. Mount inverter to a strong, stable surface.
Never mount to drywall, plaster, or other non-structural wall
treatments. Failure to mount inverter to a strong, stable surface
could result in equipment or property damage.
1. Verify mounting location adheres to the following
requirements:
•Inverter must be mounted upright on a vertical wall.
•Mounting surface must be a strong, stable surface.
Never mount to drywall, plaster or non-structural
building finishes.
•Fasteners must engage with at least two studs or
other structural members.
•Never obstruct intake or exhaust vents.
•Never allow water to enter intake or exhaust vents.
•See Figure 4-1. Observe all mounting clearances.
009989
A
F
B
G
HI
CDE
K
L
J
Figure 4-1. Mounting Clearances
A4 in (101.6 mm) G24.5 in (622.3 mm)
B19.25 in (489 mm) H8 in (203.2 mm)
C8 in (203.2 mm) I28.5 in (723.9 mm)
D20 in (508 mm) J28 in (711.2 mm)
E8.5 in (215.9 mm) K36 in (914.4)
F8 in (203.2 mm) LFloor
2. Verify fasteners are suitable for the mounting
surface and can adequately secure the inverter to
the wall. See Specifications for unit weight.
3. See Figure 4-2. Secure bracket (A) to mounting
surface. Fasteners must engage at least two studs
or other structural members.
NOTE: Mounting slots (B) accommodate different stud
spacings.
A
B009990
Figure 4-2. Installing Mounting Bracket
4. See Figure 4-3. Insert bracket tabs (C) into
inverter body slot (D).
C
D
009991
Figure 4-3. Mounting Inverter onto Bracket
5. See Figure 4-4. Secure inverter to wall with two
fasteners through mounting holes (E).
E
009992
Figure 4-4. Mounting Holes

Installing PWRcell Inverter
12 Installation Manual for Generac PWRcell Inverter
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Electrical Connections
Installation Manual for Generac PWRCell Inverter 13
Section 5: Electrical Connections
Generac PWRcell Inverter Wiring Compartment
AB
C
L
K
J
I
H
G
F
E
D
Figure 5-1. Generac PWRcell Inverter Wiring Compartment
AREbus bi-directional DC terminals GAuthorized Generac personnel only
BInternet connection HREbus Beacon port
CDC main fuses IProtected loads breaker
DCurrent Transformers (CTs) accessory port JAC grid connection terminals
EAutomatic Transfer Switches (ATs) accessory port KProtected loads terminals
FExternal safety shutdown switch terminal LGrounding bar
Accessing Wiring Compartment
(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.
(000642)
DANGER
Electrocution. Verify all system voltages are safe before
wiring. Disconnect all AC and DC sources of power before
touching terminals. Failure to ensure no dangerous voltages
are present on conductors and terminals before wiring
will result in death or serious injury.
To access the wiring compartment:
1. Initiate a Safety Shutdown and allow DC voltage to
drop to a safe level.
2. Power down inverter
3. Disconnect all sources of AC and DC Power.
4. See Figure 5-2 . Open inverter front cover by lifting
the bottom to horizontal (A) and pushing inward (B).
5. Locate wiring compartment cover (C).
6. Remove five M4X10 screws (D) and wiring
compartment cover.
B
009994
A
D
C
Figure 5-2. Wiring Compartment

Electrical Connections
14 Installation Manual for Generac PWRCell Inverter
Knockout Dimensions and Locations
NOTE: All knockouts are combination knockouts.
See Figure 5-3 for knockout locations and Table 5-3 for
available knockout sizes and quantities.
When using knockouts:
•Install reducing washers to accommodate smaller
conduit sizes.
•Install rain-tight or wet locations hubs in
compliance with UL514B.
Table 5-3. Combination Knockout Size and Quantity
Combination Knockout Size Quantity
3/4” X 1” 6
1/2” X 3/4” 7
5.517
140.13
5.910
150.13
2.638
67
1.654
42
1.969
50
2.819
71.60
2.212
56.18
1.374
34.91
2.165
55
2.165
55
1.083
27.50
2.165
55
1.929
49
1.875
47.63
1.811
45.99
.119
3.01
1.648
41.85
2.427
61.64
2.165
55
2.274
57.77
1.405
35.69
009995
Figure 5-3. Knockout Locations

Electrical Connections
Installation Manual for Generac PWRCell Inverter 15
Wiring Guidelines
(000642)
DANGER
Electrocution. Verify all system voltages are safe before
wiring. Disconnect all AC and DC sources of power before
touching terminals. Failure to ensure no dangerous voltages
are present on conductors and terminals before wiring
will result in death or serious injury.
(000599)
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.
DANGER
•The inverter shall be installed in accordance with
NEC Article 705.
•Proper installation techniques must be employed to
restrain service loops and to separate AC, DC and
isolated circuits.
•All conductors must be rated for at least 420 V.
•Always use wiring methods in accordance with
National Electrical Code (ANSI/NFPA 70) or other
applicable codes.
•Field terminals are for copper conductors only.
•Do not use field wiring leads smaller than 18 AWG.
•All permanently-installed conductors within the unit
are sized in compliance with NEC Table
310.15(B)(16) (formerly Table 310.16).
•Torque all terminals as specified in Table 5-4.
Table 5-4. Terminal Toques
Wiring Terminal Torque
AC terminals 13.3 to 15.9 in-lb (1.5 to 1.8 Nm)
DC terminals 12 in-lb (1.35 Nm)
Ground terminals 4 to 6 AWG: 45 in-lb (5 Nm)
8 AWG: 40 in-lb (4.5 Nm)
10 to 14 AWG: 35 in-lb (4 Nm)
STOP terminals 1.9 to 2.2 in-lb (0.22 to 0.25 Nm)
Grounding
(000643)
WARNING
Equipment damage. Never connect REbus conductors to
ground. Connecting REbus conductors to ground could
result in equipment or property damage.
Bar Wiring
•The grounding bar provides central grounding for
up to 8 conductors.
•Input and output circuits are isolated from the
enclosure.
•The utility neutral conductor is not bonded to the
equipment ground terminal bar within the
enclosure.
•The inverter shall be installed as a non-separately
derived system.
•System grounding is critical for REbus
communications. Bond the inverter enclosure to
the equipment grounding conductor of the normal
power source power feeder. Properly bond the
following equipment to the inverter equipment
grounding terminal bar:
– PV arrays
– Generac PV Link
– Generac PWRcell Batteries
•Torque all terminal as specified in
Table 5-5. Grounding Bar Wiring Terminal
Specifications
Wire Size (AWG) Torque
4-6 45 in-lb (5 Nm)
8 40 in-lb (4.5 Nm)
10 30 in-lb (4 Nm)
Table 5-5.

Electrical Connections
16 Installation Manual for Generac PWRCell Inverter
DC Wiring
(000598)
WARNING
Equipment damage. Connect only to REbus-compatible
devices to the DC bus. Never connect to any other DC
power source. Connecting to other DC power sources
could result in equipment damage.
(000644)
WARNING
Equipment damage. Do not connect PV string output
directly to inverter. PV must be connected via Generac
PWRcell PV Link. Connecting PV output directly to inverter
could result in equipment or property damage.
(000645)
WARNING
Equipment damage. Do not connect raw, unregulated
battery output to inverter. Connect only REbus-compatible
batteries. Connecting batteries that are not REbus-
compatible could result in equipment or property damage.
(000646)
Equipment damage. Obey polarity markings when
connecting REbus devices. Reverse-polarizing DC
circuits could result in equipment or property damage.
WARNING
(000647)
Equipment damage. Connect only one wire to each DC
wiring terminal. Doubling wires on a terminal could
result in equipment or property damage.
WARNING
NOTE: Disable REbus before returning breakers to ON
position.
•Connect all REbus devices to the REbus bi-
directional DC terminals.
•Each terminal is protected by a 30 A two-pole
circuit breaker.
•Breakers indicate state and may be used to
disconnect DC circuits.
•Breakers disconnect both ungrounded DC
conductors simultaneously.
•Torque all terminals as specified in Table 5-6.
Table 5-6. DC Wiring Terminal Specifications
Wire Size Terminal
Temp Range
Wire Min
Temp Rating Torque
18-6 AWG
(.75-10 mm)
-40 to 266ºF
(-40 to 130ºC)
194ºF
90ºC
12 in-lb
(1.35 Nm)
AC Wiring
NOTE: The installer is responsible for providing sufficient
overcurrent protection for the AC grid wiring terminals.
The conductors and overcurrent protection device shall
be sized in accordance with NEC Article 705.12 for the
utility power connection. All other conductors shall be
sized in accordance with NEC Table 310.15(B)(16) and
all other applicable NEC Articles.
•See Figure 5-4. The Generac PWRcell inverter is
equipped with four AC grid connection terminals
and three protected loads terminals.
•Use the top four terminals (A) for connection to the
utility grid.
NOTE: Use L3 terminal (B) with 3-phase inverters only.
•Use the bottom three terminals (C) for protected
loads output.
N1
L1
L2
N
Protcd.
L3
(3p)
L1
Protcd.
L2
Protcd.
C
009994
A
B
See Protected Load.
Figure 5-4. AC Wiring Terminals
•Torque all terminals as specified in Table 5-7.
Table 5-7. AC Wiring Terminal Specifications
Up to 248ºC (120ºC)
194ºF (90ºC)
13.3 in-lb to 15.9 in-lb
(1.5 Nm to 1.8 Nm)
Wire Size 14 to 6 AWG
(2.08 mm2 to 16 mm2)
Terminal Temp Range
Wire Min Temp Rating
Torque