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Powerwall 2 AC Installation Manual
with Backup Gateway

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  • 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 IMPORTANT SAFETY INSTRUCTIONS .......................... 2 Registering Powerwall ............................... 5 Specifications ................................5 Powerwall Electrical Specifications ..................................5 Powerwall Environmental Specifications ................................5 Powerwall Mechanical Specifications ..................................5 Backup Gateway Electrical Specifications ................................6 Backup Gateway Environmental Specifications ............................... 6 Backup Gateway Mechanical Specifications ..............................
  • Page 4: Important Safety Instructions

    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 high 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: Registering Powerwall

    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: Backup Gateway Electrical Specifications

    Backup Gateway Electrical Specifications Disconnect Current 200 A Overcurrent Protection Breaker 100-200 A Overvoltage Category Category III AC Meter Revenue grade Optional Backup Gateway Environmental Specifications Operating Temperature -20°C to 50°C (-4°F to 122°F) Operating Humidity (RH) Up to 100%, condensing Maximum Altitude 3000 m (9843 ft) Enclosure Type...
  • Page 9: Site 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 (38 in) Minimum clearance from left side (air intake) 50 mm (2 in) Minimum clearance from right side (air exhaust) 150 mm (6 in) Minimum clearance above single Powerwall 50 mm (2 in)
  • 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: Installation Instructions

    (1) T20 Torx driver bit (1) 1-inch insulation bushing for conduit entry to 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 •...
  • Page 13: Step 1. Plan The Installation Site

    Step 1. Plan the Installation Site The installation location for Powerwall must accommodate placement of the Backup Gateway and meet all conditions described above in “Site Requirements.” In addition, consider the following points when choosing where to install Powerwall. Wall mounting: Choose a wall capable of supporting the full weight of Powerwall, with one of the following characteristics: wood studs at regular intervals, plywood sheeting of sufficient thickness, solid concrete or masonry, or metal studs of sufficient gauge.
  • Page 14: Step 2. Transport And Unpack Powerwall

    Conduit or raceway: Calculate the amount and size of conduit or raceway needed for the installation, based on fill limits and local code requirements. If you are using conduit, an adapter may be required between the entry into the Powerwall wiring compartment and the conduit.
  • Page 15 Figure 5: Removing the Top Panel 6. Find the bottom of Powerwall by identifying the feet at the base of the unit. 7. Remove the piece of foam next to the bottom of Powerwall. 8. Open the bottom edge of the box (nearest the bottom of Powerwall) by removing the staples and folding the cardboard back.
  • Page 16: Step 3. Anchor The Powerwall Mounting Bracket

    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. 13. Strap the Powerwall to the lift equipment with a ratcheting tie-down strap. Step 3. Anchor the Powerwall Mounting Bracket 1.
  • Page 17 Wood Studs (spaced at 12, 16, 20 or 24 inches) • If anchoring directly into wood studs, use at least four (one in each corner) 1/4-inch wood screws with washers, of sufficient length for at least 1.5 in (38 mm) embedment into the studs.
  • Page 18 Plywood • If anchoring to plywood wall material, the plywood must be minimum 1/2-inch thick. Use at least four (one in each corner) 1/4-inch wood screws with washers, of sufficient length to penetrate at least 1/4 inch beyond the backside of the plywood. Figure 10: Anchoring the Bracket to Plywood Metal Studs (spaced at 12, 16, 20 or 24 inches) •...
  • Page 19 • If anchoring to backing between metal studs, studs must be minimum 25 gauge, and backing must be minimum 22 gauge. Use at least eight (two in each corner) #14 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 2500 PSI (concrete) or 1500 PSI (masonry). • Use at least four (one in each corner) 1/4-inch fasteners with washers, of sufficient length for at least 1.5 in (38 mm) embedment into the material. Ensure that all fasteners are at least 1.5 in (38 mm) away from the edges of masonry blocks or bricks.
  • 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. High 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 you marked the center lines of the chassis and bracket, 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. 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 7. Determine if a circuit breaker is required for the installation: • If no circuit breaker is required, 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 •...
  • Page 29: Step 7. Install A Circuit Breaker In The Backup Gateway

    Step 7. Install a Circuit Breaker in the Backup Gateway If the Backup Gateway is to be located between the electrical service entry and the main electrical panel, a circuit breaker must be added to the service inlet of the Backup Gateway. If no circuit breaker is required, skip to Step 8, “Mount the Backup Gateway.”...
  • Page 30: Step 8. Mount The Backup Gateway

    4. Remove and rotate the dead front panel insert (and its insulation) so that the correct punch-out will match the breaker location when the panel is replaced. For smaller (100 A and 125 A) circuit breakers, remove the small punch-out; for larger (150 A and 200 A) circuit breakers, remove the large punch-out.
  • Page 31 2. Drill pilot holes in the mounting surface for the fasteners. 3. Attach the Backup Gateway enclosure to the mounting surface. Use a level tool to ensure that the enclosure is level. Figure 30: Mounting the Backup Gateway...
  • Page 32: Step 9. Connect Powerwall And The Backup Gateway

    Depending on regional requirements, Powerwall wiring can be installed through conduit or through a cable gland. Refer to local codes to determine wiring requirements. Figure 32: Powerwall 2 AC Wiring Compartment Inlet and Connectors Communication OUT Connector (for daisy-chaining multiple Powerwalls)
  • Page 33 The wiring compartment inlet accepts a standard 1-inch conduit fitting. Figure 33: 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 34 4. Run the 4-conductor communication cable, the high-voltage AC conductors and high- voltage grounding conductor through the conduit or cable gland and pull them into the Powerwall wiring compartment. 5. Run the other end of the 4-conductor communication cable, the high-voltage AC conductors and high-voltage grounding conductor into the Backup Gateway enclosure.
  • Page 35 10. On the Powerwall side, plug the 4-pin Phoenix connector into the bottom 4-pin connector (labeled “IN”) in the Powerwall wiring compartment. Figure 36: Powerwall 2 AC Ground and Communication Connections NOTE: Do not connect the cable shield to the Powerwall chassis ground lug .
  • Page 36: Step 10: Make Ac Power Connections

    Step 10: Make AC Power Connections 1. Determine whether the installation requires that neutral be bonded to ground in the Backup Gateway. (In most cases, if the Backup Gateway is to be located between the electrical service entry and the main electrical panel, neutral should be bonded to ground, otherwise, bonding should be removed.) The Backup Gateway ships with neutral bonded to ground.
  • Page 37 Figure 38: Backup Gateway Power Connector Labels (shown with breaker installed) 3. Connect Powerwall to the main or sub electrical panel of the installation (depending on the backup configuration) according to the following tables, for your electrical service type. NOTE: For AC power connections to Powerwall, use 5–8 mm (10-8 AWG) 90 deg C minimum copper (Cu) wire.
  • Page 38 5. Plug the AC power harness into the AC connector in the Powerwall wiring compartment. Ensure that the connector clicks into place. Figure 39: Powerwall 2 AC Power Harness Connection NOTE: The Powerwall connection to the main electrical panel requires a 30 A circuit breaker with a maximum short circuit current rating of 10 kA.
  • Page 39: Step 11. Close The Wiring Compartments And Turn On The System

    Step 11. Close the Wiring Compartments and Turn On the System 1. Arrange the communication and AC power wires inside the Powerwall wiring compartment. 2. Ensure that all conduit or cable gland junctions and cable entry points are secure and properly sealed.
  • Page 40: Step 13. Finish Installation And Register The System

    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 41: 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 42: Wiring Reference

    Wiring Reference Powerwall Powerwall Wiring Powerwall Terminal Wire Color Wire Gauge 12V + (Logic +) Brown 0.2–1.5 mm (24–16 AWG) White 0.2–1.5 mm (24–16 AWG) CN + (CAN HI) Blue 0.2–1.5 mm (24–16 AWG) CN – (CAN LO) Yellow 0.2–1.5 mm (24–16 AWG) L2 (Line 2) 5–8 mm...
  • Page 43 Backup Gateway Backup Gateway Wiring Backup Gateway Terminal Wire Color Wire Gauge 12V + (Logic +) Brown 0.2–1.5 mm (24–16 AWG) White 0.2–1.5 mm (24–16 AWG) CN + (CAN HI) Blue 0.2–1.5 mm (24–16 AWG) CN – (CAN LO) Yellow 0.2–1.5 mm (24–16 AWG) Ethernet...
  • Page 44: Powerwall Inverter Adjustable Settings

    Powerwall Inverter Adjustable Settings The Powerwall inverter has the following adjustable settings, which are determined when the system is commissioned. NOTE: Under abnormal voltage or frequency conditions or in response to a detected unintentional island, the system will disconnect from the grid by opening its internal contactor. NOTE: All values are for factory default 240 V @ 60 Hz.
  • Page 45 In addition to ride-through capability, the inverter is capable of adding or removing VARs during VRT events to help support voltage regulation during the fault event. During a grid fault, the inverter maintains its output power set point unless it is operating in current limit or the reactive current demand consumes the available output current capacity.
  • Page 46: Powerwall Inverter Short Circuit Information

    Powerwall Inverter Short Circuit Information Grid-Tied Mode Inverter Short Circuit Information Short Initial Peak Breaking Max Current Duration Max Current Duration Max Current Duration (Amps RMS) (ms) (Amps) (ms) (Amps RMS) (ms) L1 – L2 16.7 58.2 16.7 L1 - GND 20.5 16.7 9.24...
  • Page 48 Tesla Motors Netherlands B.V. Tesla, Inc. Atlasstraat 7–9, 5047 RG 3500 Deer Creek Road Tilburg, Netherlands Palo Alto, CA 94304 Rev 1.0 Mar 21, 2017...

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