Tesla Powerwall 2 AC Installation Manual
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Tesla Powerwall 2 AC Installation Manual

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Powerwall 2 AC Installation Manual
with Backup Gateway

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Summary of Contents for Tesla Powerwall 2 AC

  • Page 1 Powerwall 2 AC Installation Manual with Backup Gateway...
  • Page 2 All information in this document is subject to copyright and other intellectual property rights of Tesla, Inc. and its licensors. This material may not be modified, reproduced or copied, in whole or in part, without the prior written permission of Tesla, Inc. and its licensors. Additional information is available upon request.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Powerwall Electrical Specifications ..................................5 Powerwall Environmental Specifications ................................5 Powerwall Mechanical Specifications ..................................6 Backup Gateway Electrical Specifications ................................6 Backup Gateway Environmental Specifications ............................... 6 Backup Gateway Mechanical Specifications ..............................6 Powerwall Physical Requirements ................................... 7 Powerwall Dimensions and Space Requirements ............................
  • Page 4 IMPORTANT SAFETY INSTRUCTIONS SAVE THESE IMPORTANT SAFETY INSTRUCTIONS This manual contains important instructions for the Tesla Powerwall 2 AC and Backup Gateway that must be followed during installation and maintenance of the system. Powerwall and Backup Gateway installation and service require knowledge of low voltage electricity and should only be performed by Tesla Certified Installers.
  • Page 5 WARNING: Do not attempt to open, disassemble, repair, tamper with, or modify Powerwall. Powerwall and its components are not user serviceable. Batteries in Powerwall are not replaceable. Contact the Tesla Certified Installer who installed the system for any repairs. WARNING: To protect Powerwall and its components from damage when transporting, handle with care.
  • Page 6 CAUTION: Do not use fluids, parts, or accessories other than those specified in this manual, including use of non-genuine Tesla parts or accessories, or parts or accessories not purchased directly from Tesla or a Tesla-certified party.

  • Page 7: Powerwall Electrical Specifications

    To secure the full 10-year warranty for Powerwall, it must be reliably connected to the Internet to allow remote firmware upgrades from Tesla. If an Internet connection is not established or is interrupted for an extended period, and Tesla is unable to contact the owner, the warranty may be limited to 4 years.

  • Page 8: Powerwall Mechanical Specifications

    Powerwall Mechanical Specifications Height 1150 mm Width 755 mm Depth 155 mm Weight 125 kg Backup Gateway Electrical Specifications Disconnect Current 200 A Overvoltage Category Category III AC Meter Revenue grade Backup Gateway Environmental Specifications Operating Temperature -20°C to 50°C Operating Humidity (RH) Up to 100%, condensing Maximum Altitude...

  • Page 9: Powerwall Physical Requirements

    3. Site Requirements Powerwall Physical Requirements Powerwall can be mounted on a floor or wall. When floor-mounted, it must also be anchored to an adjacent wall. In both types of installation, the wall must be capable of supporting the full weight of Powerwall and its mounting hardware.

  • Page 10: Powerwall Dimensions And Space Requirements

    Powerwall Dimensions and Space Requirements Figure 2: Powerwall 2 Dimensions and Space Requirements Powerwall Space Requirements Minimum lateral wall space 960 mm Minimum clearance from left side (air intake) 50 mm Minimum clearance from right side (air exhaust) 150 mm Minimum clearance above single Powerwall 50 mm Minimum clearance above side-by-side Powerwalls...

  • Page 11: Powerwall Installation Requirements

    Powerwall Installation Requirements Powerwall comes with a separate Backup Gateway and power meter to enable integration with solar systems and the electrical grid. The Backup Gateway communicates with the system by means of wireless and wired connections. Wiring and conduit (where required) must be provided by the installer.

  • Page 12: Powerwall Box Contents

    (1) 35-mm rubber grommet for back cable entry port into Powerwall (2) shims for leveling floor-mounted units (1) Safety Instructions document • On the outside of the box: printed Tesla Battery Emergency Response Guide (ERG) Backup Gateway Box Contents • (1) Backup Gateway enclosure •...

  • Page 13: Required Supplies

    Required Supplies • Mounting bracket hardware (see “Step 3: Anchor the Powerwall Mounting Bracket”) • Conduit fitting or cable gland (depending on local electrical requirements) • Conduit or raceway (depending on local electrical requirements) • Minimum 300 V rated 4-conductor or double-insulated (with one twisted pair) shielded copper (Cu) cable (for communication connection between Powerwall and the Backup Gateway) •...

  • Page 14: Step 2. Transport And Unpack Powerwall

    Cable gauge and length: Powerwall requires cable connections to the Backup Gateway, main switchboard, and an Internet router. Position Powerwall, the Backup Gateway, and other electrical components to minimize cable lengths, based on local code requirements. Maximum Cable Type Connection Cable Gauge Cable Length Power...
  • Page 15 4. Verify that the contents of the bracket box and accessory bag are complete and undamaged (see “Powerwall Box Contents,” above). 5. Remove the top panel and set it aside. Figure 5: Removing the Top Panel 6. Find the bottom of Powerwall by identifying the feet at the base of the unit. 7.

  • Page 16: Step 3. Anchor The Powerwall Mounting Bracket

    11. Grasp the top of the Powerwall and carefully tilt it upright until it sits vertically in the box, with the front of the unit facing the lift equipment. Figure 7: Removing Powerwall from Its Box 12. Position the Powerwall on the lift equipment, with the mounting cleats facing away from the lift equipment.
  • Page 17 Wood Studs (spaced from 300 mm to 600 mm) • If anchoring directly into wood studs, use at least four (one in each corner) 10 mm wood screws with washers, of sufficient length for at least 64 mm embedment into the studs.
  • Page 18 Plywood • If anchoring to plywood wall material, the plywood must be minimum 38 mm thick. Use at least four (one in each corner) 10 mm wood screws with washers, of sufficient length to penetrate at least 7 mm beyond the backside of the plywood. Figure 10: Anchoring the Bracket to Plywood Metal Studs (spaced from 300 mm to 600 mm) •...
  • Page 19 • If anchoring to backing between metal studs, studs must be minimum 0.5 mm thick, and backing must be minimum 0.7 mm thick. Use at least eight (two in each corner) 10 mm sheet metal screws with washers, of sufficient length to penetrate at least 3 threads beyond the backing.
  • Page 20 Concrete or Masonry • Minimum strength must be 18 MPa (concrete), 12 MPa (clay brick), or 11 MPa (masonry). • Use at least four (one in each corner, in any available anchor slot) 10 mm fasteners with washers, of sufficient length for at least 50 mm embedment into the material. Figure 14: Anchoring the Bracket to Concrete or Masonry Channel Strut (Unistrut) •...
  • Page 21 NOTE: Both floor and wall mount installations require the cleats on the back of Powerwall to be fully engaged in the mounting bracket. Consider the floor contour when measuring for floor-mounted installations. 3. Use the bracket as a guide to mark the location of pilot holes for the required fasteners. Use a level tool to ensure that the bracket is level.
  • Page 22 Figure 17: Back Cable Entry Port Location –DETAIL (Viewed from Front of Powerwall) 8. (Optional) Use painter’s tape to mark the location of the bracket flanges on the wall, the location of the cleats on the front of the Powerwall, and the center lines of the bracket and chassis to aid in aligning the unit.

  • Page 23: Step 4. Prepare Powerwall For Mounting

    Step 4. Prepare Powerwall for Mounting 1. Switch off Powerwall by moving the switch on the right side of the unit to the OFF position. WARNING: Switching off Powerwall disengages the Enable line but does not disconnect AC voltage. Voltage may be present on the AC connection leads unless the Backup Gateway, any associated circuit breakers, and the AC disconnect (if applicable) are switched off.
  • Page 24 3. (Side cable entry installations only) Remove the side cable entry door from the left side cover by sliding it out of its slot. Figure 20: Removing the Side Cable Entry Door 4. (Back cable entry installations only) Remove the plug from the back cable entry port on Powerwall and place it in the side cable entry port.

  • Page 25: Step 5. Mount Powerwall On The Bracket

    Step 5. Mount Powerwall on the Bracket 1. Move the lift equipment close to the wall and remove the tie-down strap securing the Powerwall to the lift equipment. 2. Adjust the height of the Powerwall so that its mounting cleats are just above the flanges on the bracket.
  • Page 26 5. Make sure the unit is centered on the bracket. (If the center lines of the chassis and bracket are marked with tape, use those marks to align the centers.) 6. (Floor mount installations only) Use the provided shims to ensure that Powerwall is level. The unit should be level within +/–...

  • Page 27: Step 6. Prepare The Backup Gateway For Mounting

    Step 6. Prepare the Backup Gateway for Mounting 1. Remove the Backup Gateway from its packaging and verify that the contents are complete and undamaged (see “Backup Gateway Box Contents,” above). 2. Take a photo and record the serial number of the Backup Gateway in the back of the Owner’s Manual that came with the system.
  • Page 28 Figure 25: Rotating the Back Panel Assembly in the Enclosure 8. Remove and rotate the dead front panel insert (and its insulation) 180 degrees, and reattach it to compensate for the inverted back panel. Figure 26: Rotating the Dead Front Panel Insert Powerwall Installation Manual...

  • Page 29: Step 7. Mount The Backup Gateway

    Step 7. Mount the Backup Gateway 1. Determine the mounting location. The Backup Gateway enclosure has 3 mounting holes (shown below in red). If needed, two additional mounting points (shown below in grey) are also available. To use these additional mounting points, the back panel must be removed and the points drilled out.
  • Page 30 Figure 28: Mounting the Backup Gateway Powerwall Installation Manual...

  • Page 31: Step 8. Connect Powerwall And The Backup Gateway

    Depending on local requirements, Powerwall wiring can be installed through conduit or through a cable gland. Refer to local codes to determine wiring requirements. Figure 30: Powerwall 2 AC Wiring Compartment Inlet and Connectors Communication OUT Connector (for daisy-chaining multiple Powerwalls)
  • Page 32 The wiring compartment inlet accepts a standard 1-inch conduit fitting. Figure 31: Powerwall 2 AC Side Cable Port Entry location 3. (Conduit installations only) If the conduit connector does not have an integrated bushing, affix the provided insulation bushing to the conduit opening on the inside of the wiring compartment.
  • Page 33 5. Run the other end of the 4-conductor communication cable, the AC power conductors and equipment grounding conductor into the Backup Gateway enclosure. 6. On the Backup Gateway side, strip the end of the equipment grounding conductor and insert it in the ground bar in the Backup Gateway enclosure (Fig 33). The ground bar is identified with the following symbol: .
  • Page 34 9. On the Backup Gateway side, plug the 4-pin Phoenix connector into the 4-pin socket at the bottom left of the enclosure. Figure 33: Backup Gateway Ground and Communication Connections 10. On the Powerwall side, plug the 4-pin Phoenix connector into the bottom 4-pin socket (labeled “IN”) in the Powerwall wiring compartment.
  • Page 35 11. Plug the provided 4-pin Phoenix connector with the terminating 120-Ohm resistor into the top 4-pin socket (labeled “OUT”) in the Powerwall wiring compartment. (In multi-Powerwall installations, use this connector only in the last Powerwall in the chain.) Figure 35: Connector with Terminating Resistor Figure 36: Powerwall Communication Termination 12.

  • Page 36: Step 9: Connect A Demand Response Controller (Australia And New Zealand Only)

    4. Use an Ethernet cable to connect the Sunspec Ethernet port to the Ethernet port inside the Tesla Backup Gateway. The Ethernet port in the Backup Gateway functions as a DHCP client, and the TCP port on the Sunspec DRC has built-in DHCP server. No other hardware is required for direct connection or control of the Powerwall inverter.

  • Page 37: Step 10: Make Ac Power Connections

    Step 10: Make AC Power Connections 1. Connect the electrical service from the service inlet or from the main switchboard (depending on the backup configuration) to the Backup Gateway terminals according to the following table and diagram (Fig 37). Strip the ends of the wires and insert them in the corresponding Backup Gateway terminal lugs.
  • Page 38 4. Plug the AC power harness into the AC connector in the Powerwall wiring compartment. Ensure that the connector clicks into place. Figure 38: Powerwall 2 AC Power Harness Connection NOTE: The Powerwall connection to the switchboard requires a 32 A circuit breaker with a short circuit current rating of 10 kA.

  • Page 39: Step 11. Install Energy Metering For The System

    CTs between the utility meter and the main switch, load metering can substitute for site metering. Meter Placement and CT Wiring Lengths CT leads are 1.5 m long and can be extended with 3 m extension kits (Tesla P/N 1125547-03-x), depending on CT usage: •...
  • Page 40 Meter Voltage Taps The meter in the Backup Gateway is pre-wired for operation inside the Backup Gateway enclosure. If you need to remove the meter from the Backup Gateway in order to move it closer to a metering point, use the voltage line harness provided in the meter kit to install the corresponding voltage taps in the electrical panel.
  • Page 41 Current Transformer Orientation CTs must be installed with the label on the CT housing pointing toward the power source, according to the following table and diagram (Fig. 41). Figure 41: CT Orientation in Relation to Power Flow CT Usage CT Orientation Site CTs CT label facing toward the service entrance/grid Solar CTs...
  • Page 42 If a site has multiple solar inverters spaced far apart, or if a distribution board has two main breakers, a Y-splitter cable (Tesla P/N 1129625-00-x) can be used to connect two CTs on the same phase to a single meter port.
  • Page 43 Whole-Home Backup For whole-home backup installations where the Backup Gateway is installed between the electrical service entrance and the utility meter, and ahead of all loads (Fig 44), do the following: • The pre-wired voltage taps and the pre-installed CT in the Backup Gateway are correctly positioned for this configuration, and do not need to be relocated.
  • Page 44 Figure 44: CT Placement for Whole Home Backup Powerwall Installation Manual...
  • Page 45 Partial-Home Backup For partial-home backup installations where the Backup Gateway is installed on the load side of the main switch and feeds a subset of all loads, do the following: • The pre-wired voltage taps in the Backup Gateway are correctly positioned for this configuration, and do not need to be relocated.
  • Page 46 Whole- or Partial-Home Backup with Two Meters For whole- or partial-home backup installations where access to solar equipment is difficult, or where the Backup Gateway is more than 10.5 m away from the circuit breakers for the solar equipment (Fig. 45), use a second meter to monitor solar energy production. •...
  • Page 47 Figure 45: Voltage Tap and CT Placement for Partial Home Backup with Two Meters...

  • Page 48: Step 12. Close The Wiring Compartments And Turn On The System

    Step 12. Close the Wiring Compartments and Turn On the System 1. Before closing any installed hardware, take photos of the completed wiring in the Powerwall, Gateway, and main switchboard. 2. Ensure that all conduit or cable gland junctions and cable entry points are secure and properly sealed.

  • Page 49: Step 13. Commission The System

    Step 13. Commission the System Commissioning Overview Connect to the Gateway: The first step in commissioning is to connect to the Gateway, which then allows you to set up Internet connectivity and configure the system. Establish the system Internet connection: Powerwall must be connected to the Internet in order to receive firmware updates and transmit performance data.
  • Page 50 4. Connect the Gateway to the Internet by one of the following means: Ethernet (preferred if the Internet router is accessible) • In the Commissioning Wizard, click the arrow for Ethernet • Choose DHCP (most common) or Static (only if necessary and you know the Network settings) •...

  • Page 51: Step 14. Finish And Demonstrate The Installation

    2. Remove the plastic straps from the left and right side covers by cutting them and carefully pulling them through the slots in the covers. 3. If necessary, ask the homeowner to download and install the My Tesla app and connect to the system.

  • Page 52: Troubleshooting

    Rate of pulsing proportional to power flow Powerwall not enabled or switched off • If it is not possible to communicate with the Backup Gateway through the My Tesla app, ensure that the home Internet connection is working. • Ensure that Powerwall is correctly connected to the Backup Gateway, based on the wiring diagrams above and site design information.

  • Page 53: Technical Support

    Resources for Certified Installers, including service request forms and the latest versions of installation manuals, are available at https://www.tesla.com/support/powerwall. If further support is needed, contact the Tesla Service team at the support phone number for your region. Support numbers for all regions are found at: https://www.tesla.com/support/powerwall...
  • Page 54 Wiring Reference Powerwall Powerwall Wiring Powerwall Terminal Recommended Wire Color Wire Gauge 12V + (Logic +) Brown 0.2–1.5 mm White 0.2–1.5 mm CN + (CAN HI) Blue 0.2–1.5 mm CN – (CAN LO) Yellow 0.2–1.5 mm L2 (Line 2) – to Neutral Blue 6–10 mm N (Neutral) [Unused]...
  • Page 55 Backup Gateway Backup Gateway Wiring Backup Gateway Terminal Recommended Wire Color Wire Gauge 12V + (Logic +) Brown 0.2–1.5 mm White 0.2–1.5 mm CN + (CAN HI) Blue 0.2–1.5 mm CN – (CAN LO) Yellow 0.2–1.5 mm Ethernet CAT5 Ground Bar Green or Green/Yellow 2.5–35 mm Line Source (S)
  • Page 56 Revision Log Revision Date Description 2017-5-19 Initial Release Powerwall Installation Manual...
  • Page 58 Tesla Motors Netherlands B.V. Tesla, Inc. Atlasstraat 7–9, 5047 RG 3500 Deer Creek Road Tilburg, Netherlands Palo Alto, CA 94304 AUS Rev 1.0 May 19, 2017...

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