Tesla J1772 Manual

PRODUCT OVERVIEW

This manual applies to Wall Connectors identified by part number 14577681509549-**-*.

Product Specifications

Transportation and storage: Ensure that Wall Connector is within storage temperature when moving, transporting, or storing.

Circuit Breaker Rating / Maximum Output
Power Output
For maximum power output, install a standard double pole 60 amp circuit breaker. Wall Connector includes integrated GFCI protection - do not install a GFCI circuit breaker.
Wall Connector incorporates automatic load management, which allows the max output to be customized to an existing power supply. If the electrical supply is unable to support the 60 amp configuration, select a lower amperage configuration.

NOTE: External disconnect switches are neither required nor recommended.
NOTE: Circuit breaker size is programmed during the commissioning process. See Commissioning Procedure or details.
NOTE: Some Tesla vehicles may draw less current than the max output. Actual charging rate depends on Wall Connector output and onboard charger in the vehicle.

Branch Circuit Conductors and Ground Wire

• If installing for less than maximum power, refer to local electrical code to select correct conductors and ground wire size that are suitable for the chosen circuit breaker.
• If installing for maximum power, use minimum 6 AWG, 90°C-rated copper wire for conductors.
  NOTE: Upsize conductors if necessary.
• For sites with multiple Wall Connectors, each Wall Connector must have its own branch circuit with L1, L2/N, and Ground.
• COPPER WIRE TERMINATIONS ONLY for landing in Wall Connector wirebox terminals. Conductors can be stranded or solid.
• Hardwire branch circuits to disconnects or circuit breakers. Do NOT install cord-and-plug type connections.
• For outdoor installations, use watertight fittings when securing feeder wires to the wirebox.

Grounding Connections
Wall Connector must have a ground path back to the main equipment earthing point on site. Without a proper ground connection, the Wall Connector will fault during a ground assurance test. Equipmentgrounding conductor must be run with the circuit conductors and connected to the equipment-grounding terminal in the wirebox. Install a ground (PE) wire sized according to local electrical code.

Using Wall Connector

1. Open the vehicle charge port.
2. Insert the charge handle into the vehicle charge port.
3. Check the vehicle controls to verify charging.
4. To remove the charge handle from the vehicle, press and hold the button on the handle to unlock the charge port.
   
5. Remove the charge handle from the vehicle charge port.
6. Wrap the charge cable counter-clockwise around the Wall Connector and insert the charge handle into the holster.
   

Features
Connectivity
Wall Connector is equipped with Wi-Fi to communicate with local site routers, vehicles, mobile devices, other Wall Connectors, and other Tesla products.

Hosted Access Point
Wall Connector hosts a WPA2 password-secured, 2.4 GHz, 802.11 Wi-Fi access point network to facilitate commissioning and connecting to other devices.
A unique SSID Wi-Fi network name and WPA2 password for connecting to the Wall Connector are printed on a label at the rear of the main unit, as well as on the front cover of the Quickstart Guide included in the box.

Local Network
Connecting Wall Connector to a local Wi-Fi network enables it to receive over-the-air firmware updates, remote diagnostics access, and usage data tracking capability. A Wi-Fi connection is required for sites that utilize authentication, billing, and other property management features.
Wall Connector only supports WPA2/3-secured, 2.4 GHz, 802.11 infrastructure mode networks.
NOTE: Networks that are not password protected are not supported. The Wall Connector will not display non-password protected networks in the options list. Open networks without a password are not supported and will not be recognized by the Wall Connector.
NOTE: WPA enterprise will be supported in a future firmware update.
NOTE: Property management features will be enabled via future firmware updates.

Ground Fault Circuit Interruption
Integrated ground fault circuit interruption (GFCI) protection automatically detects a current mismatch between power delivery conductors that would indicate that current is flowing through the ground (PE) conductor.
If a ground fault occurs after 10 seconds of charging, Wall Connector will wait 15 minutes before automatically re-attempting to charge. Up to four attempts to charge will be made before user interaction is required.
If a residual current fault occurs within 10 seconds of charging, Wall Connector will lock out and user interaction is required to restore charging functionality.
Recommended interaction includes pressing the button on the charging handle, or removing the charging handle from the vehicle and reinserting it. If this does not resolve the issue, look for a ground fault issue such as water ingress.

Ground Assurance
Wall Connector continuously checks for the presence of a safe ground connection and automatically recovers from faults. Grounded assurance operates by injecting a small amount of current into the ground conductor in order to measure the impedance between line and ground. If high impedance is detected, the Wall Connector will lock out charging and display a fault code of two (2) red blinks. See Fault Codes for a full list of fault codes.
For ground assurance to operate on TN grids, one leg of the distribution transformer must be groundbonded (Neutral). Ground bond should only occur at one location in a site's electrical system.
Wall Connector ground assurance may be adjusted in countries with TT or IT grid configurations and can be disabled in the commissioning procedure.
The Ground Monitor Interrupter feature monitors the Wall Connector ground connection. Select the correct option based on the installation's earthing system and earth impedance.
Depending on country, three options are available:

• Enable: Ground connection will be monitored and a high detected ground resistance will disable the Wall Connector. This is the preferred setting to provide protection, and should be selected where ground connection is expected to be strong (as in the case on TN networks and most TT networks), and where required by regulation.
• Monitor: Ground connection will be monitored but a high detected ground resistance will not disable the Wall Connector. This should be selected if the ground monitoring check yields false positives and ground impedance cannot be improved (as is the case in some TT networks).
• Disabled: Ground connection will not be monitored. This should be selected where the ground connection is not made (as is the case for IT networks), or where the current induced by this check would be problematic (as is the case on some TT networks with sensitive residual-current devices).

NOTE: Ground Monitoring is always enabled for installations in North America.
Temporary problems such as ground faults or utility power surges are resolved automatically.

Thermal Monitoring
Wall Connector actively monitors temperatures in multiple locations while charging to ensure stability of the charge session. Temperature sensors are located at the relays, microcontroller, charge handle, and rear of the main unit to monitor the temperature of the terminals in the wirebox.
In warmer conditions, Wall Connector may reduce current and charge speed to protect itself. When this happens, the light bar on the faceplate will continue to display the "streaming green" and a blink code of three red flashes to indicate that charging has been reduced due to high temperatures. If heat continues to rise, Wall Connector will stop charging and display a blink code of three red flashes.
NOTE: See Fault Codes for full list of error codes.
For optimal performance, install Wall Connectors in areas where ambient temperature will remain below 50˚C (122˚F). In rare circumstances, Wall Connector may begin reducing amperage at 35˚C (95˚F) ambient temperatures. Adjustments to amperage are automatic and do not require user input; Wall Connector will return to starting current when temperatures are reduced.

Power Outages
If there is a power outage while Wall Connector is charging a vehicle, charging will automatically resume within 1 to 3 minutes after power restoration. The Wall Connector will display a solid blue light on the faceplate to indicate that it is communicating with the vehicle and waiting to resume charging. Alternatively, pressing the button on the charge handle after power restoration will cause Wall Connector to resume charging immediately.

Firmware Updates
Firmware updates will be automatically applied to the Wall Connector to improve the user experience and introduce new features. Connect Wall Connector to Wi-Fi for access to the most recent firmware update. See Commissioning Procedure Tesla vehicles can provide firmware updates to Wall Connectors.

Wall Connector External Components
"Wall Connector" refers to the product as a whole.

1. Faceplate
2. Light bar (vertical)
3. Main unit
4. Charge handle button
5. Charge handle

Wall Connector Internal Components

1. RS-485 port
2. Contact blades
3. Temperature sensor
4. Conductor terminals
5. Zip tie anchor
6. Sliding contacts
7. Wirebox drainage opening (enables Type 3R protection)

INSTALLATION

In the Box
NOTE: The hex bit, zip tie, and fasteners are located in a plastic bag inside the wirebox, which comes attached to the main unit of the Wall Connector.
NOTE: Wall plugs are not included. If installing in concrete or other like materials, use 6 mm wall plugs.

Tools
Required Tools
NOTE: Drill bit sizes assume wood mounting surfaces. If installing on concrete or other masonry, consult with an electrician for optimal pilot hole sizes.

Optional Tools

Installation Considerations
Wall Connector may be installed on any flat, vertical surface capable of supporting its weight (e.g. wall, pedestal, etc.). Wall Connector weighs 6.8 kg (15 lb).

Choosing Location
Install Wall Connector in a location that allows the charge cable to reach the vehicle charge port without putting strain on the cable. Recommended installation area for Wall Connectors with cable:

Install Wall Connector in a location with ample clearance on all sides to allow the charge cable to loop around the unit and the charge handle to comfortably land in the side dock.

NOTE: If constrained by space, a cable organizer can be installed near the Wall Connector (sold separately).

Choosing Height

• Maximum height (indoor and outdoor): 60 in (1.52 m)
• Recommended height: ~45 in (~1.15 m)
• Minimum outdoor height: 24 in (0.6 m)
• Minimum indoor height: 18 in (0.45 m)

Maximizing Wi-Fi Signal Reception
Wall Connectors should be connected to a local Wi-Fi network for optimal functionality. For maximum signal reception, avoid installing Wall Connector on opposite sides of concrete, masonry, metal studs, and other physical obstructions that could impede Wi-Fi signal reception.
NOTE: If a mobile device is able to connect to local Wi-Fi at a given location, it is a good indication that Wall Connector will also be able to connect.

Wire Entry Options
Wall Connector's wirebox has multiple wire entry options. Choose one entry path and follow installation instructions based on chosen entry path.

1. Top entry location
2. Rear entry locations (left or right)
3. Bottom entry location

For additional installation considerations on sites that will have multiple Wall Connectors, see Considerations for Power Sharing.

Prepare Wirebox for Conduit Fittings and Bushings

The default conduit size is 3/4 in (21 mm). 1 in (27 mm) conduit is acceptable if needed.
Based on fittings and conduit size, prepare the wirebox.

• For top or bottom entry: Manually remove the conduit plug.
• For rear entry: Drill with 1-1/8 in (29 mm) step bit to prepare wirebox for fittings.
  Table 1. For 3/4 in (21 mm) Conduit

  Top Entry	Bottom Entry	Rear Left Entry	Rear Right Entry
  		1-1/8 in (29 mm)	1-1/8 in (29 mm)

  Table 2. For 1 in (27 mm) Conduit

  Top Entry	Bottom Entry	Rear Left Entry	Rear Right Entry
  Do not expand.	1-3/8 in (35 mm)	1-3/8 in (35 mm)	1-3/8 in (35 mm)

NOTE: For 1 in (27 mm) rear and bottom entry options, drill with 1-3/8 in (35 mm) step bit to prepare wirebox for fittings.

Prepare Mounting Surface

1. If applicable, use a stud finder to locate a wooden support stud. Plywood, or other flat wall surfaces capable of supporting the weight of the Wall Connector, may also be used.
   
2. Based on the chosen wire entry path, position the included cardboard mounting template onto the installation surface and use a 5/32 in (4 mm) bit to drill two pilot holes (one from the top row and one from the bottom row).
   NOTE: When installing for rear left or rear right wire entry, select the two mounting holes that are on the opposite side of the wire entry point.
   NOTE: Use a level tool with the cardboard mounting template to ensure a level installation as desired.
   
   Drill bit, 5/32 in (4 mm)

   Top Entry	Bottom Entry	Rear Left Entry	Rear Right Entry

Prepare Wirebox and Mount to Wall

1. Use a 1/4 in (6.5 mm) bit to drill two pilot holes into the wirebox that match the locations chosen on the cardboard mounting template.
   
   Drill bit, 1/4 in (6.5 mm)

   Top Entry	Bottom Entry	Bottom Left Entry	Bottom Right Entry

2. Attach the wirebox to the mounting location using the included 4 mm hex bit and the two included wood fastener screws.
   

NOTE: Type 3R rating is only possible when washers have sealing gaskets. If mounting to alternate surface (such as a prefabricated pedestal), use alternate fasteners with sealing washers.
NOTE: The wood fastener screws are designed to support the weight of the entire Wall Connector, cable, and charging handle.

Route Wiring Through Wirebox

1. Route wiring into selected entry point and through the service loop channel on the right side of the wirebox.

   Top Entry	Bottom Entry	Rear Left Entry	Rear Right Entry

2. Use appropriate cable glands, bushings, or fittings to secure the wiring in place and protect from water and debris intrusion.
   
   Ensure that bushings are in place to avoid damage to conductors and ground wire when pulled into wirebox.
   
   Use copper conductors only.
   NOTE: Compression-style fittings are recommended to prevent interference.
   NOTE: For top or bottom wire entry, if installing fittings with a set screw, ensure that the screw is positioned to avoid interference with Wall Connector cables.

Strip and Land Wiring

1. Strip insulation from wires ~1/2 in (~13 mm), route through service channel, and land each wire in its correct terminal block.
   NOTE: Terminals are bi-directional.
   
2. Secure the wiring in the service channel using the included zip tie.
   
3. Use a torque driver and the included 4 mm hex bit to torque the terminal screws to 50 lbf. in (5.6 Nm).
   NOTE: When installing Wall Connector in a split phase electrical system, use Line-to-Line instead of Line-to-Neutral.
   

Attach Wall Connector to Wirebox

1. Attach the main unit to the wirebox by pushing it inward.
   
2. Secure the main unit to the wirebox with the four included fasteners and the included 4 mm hex bit using a bit driver, applying pressure to the faceplate during the process to compress the internal seal. Firmly hand-tighten the four fasteners until they are secure.
   NOTE: Do not use a power drill for this step.
   

Energize Wall Connector

1. Energize the Wall Connector by turning on the upstream circuit breaker.
   The Wall Connector's LEDs will turn on. See Wall Connector LEDs.
   
2. Proceed with commissioning.

COMMISSIONING PROCEDURE

The commissioning process for Wall Connector enables easy configuration of circuit breaker size, Wi-Fi connectivity, and power sharing options.

1. Turn on Wall Connector's corresponding branch breaker to energize the unit. During startup, Wall Connector will display green LEDs for 10 seconds to indicate the maximum circuit breaker it is configured for.
2. Use a Wi-Fi-enabled device such as a smart phone to connect to the SSID Wi-Fi signal broadcasted by the Wall Connector. Joining the Wall Connector network can be done by scanning the sticker QR code on the Quickstart Guide cover page, or by manually selecting the network and typing in the WPA2 password.
   NOTE: The Wi-Fi network will broadcast for 15 minutes. To have the Wall Connector broadcast the SSID again, hold the button on the charging handle for 5 seconds or turn the circuit breaker off, then on again.
   NOTE: If you are unable to connect to the Wall Connector SSID, turn off the cellular data function on your mobile device and try again.
   

3. Scan the QR code below with the device that is connected to the Wall Connector to access the web browser commissioning interface. Alternatively, manually type the URL address (http://192.168.92.1) into the web browser.
   

4. Follow the onscreen commissioning steps on the web browser to assign Wall Connector to its own circuit breaker and connect it to the local site Wi-Fi network.
   

NOTE: To have the Wall Connector broadcast the SSID again, hold the button on the charge handle for 5 seconds or turn the circuit breaker off, then on again.

Setting Up Access Control
The Charging Access Control feature provides full control over which vehicles are allowed to charge with your Wall Connector and excludes vehicles without access based on user specifications.

1. Sign into the commissioning wizard..
   Use the Commissioning Procedure to sign into the commissioning wizard and connect to the Wall Connector Wi-Fi SSID by clicking on the 'Access Control' card.
2. Configure Access Control.
   You can choose from three options:
   • 'All Vehicles'
     This is the default option and will allow charging on all electric vehicles with a matching charge port. To charge with the older generation Tesla Roadster, you will need to pick the 'All Vehicles' option
   • 'Only Tesla'
     This option blocks charging on non-Tesla EVs.
     
   • 'Authorized Teslas Only'
     This option allows you to add up to 10 specified Tesla cars by their VIN and assign an optional name. For convenience, the VIN of the last 10 cars previously connected to the Wall Connector is made available for selection. The VIN is usually displayed on your windshield and can also be found in the 'Software' tab on your vehicle touchscreen.
     

POWER SHARING

Power Sharing Overview
The firmware-based power sharing feature enables up to 6 Wall Connectors installed at the same site to intelligently share the site's total available power via unit-to-unit Wi-Fi. This minimizes the need for many residential and commercial applications to have specific electrical upgrades for concurrent multi-vehicle charging.
During the commissioning process,

• Wall Connectors are allocated to individual branch circuits (each up to 60 amps)
• Total power is allocated to the group of linked Wall Connectors

NOTE: For instructions to commission Wall Connectors in a power sharing network, see Gen 3 Wall Connector Power Sharing.
Total current output of Wall Connectors that share power will never exceed the site's total allocated power.

1. AC feed (service panel)
2. Power sharing via Wi-Fi communication

Breaker and Branch Circuit Setup
Power sharing circuits may be installed in an electrical panel that supports other loads. If space is limited or the main power supply is far from the Wall Connectors, installing a dedicated load center may be prudent.
See below for examples of Wall Connector power sharing diagrams (one with sub-panel and one without). Each individual Wall Connector in below examples is capable of providing 48 amps when it is the only one in use. As more Wall Connectors begin plugging into vehicles, the system will automatically distribute power based on the total power allocated to the site.

Power Sharing Setup with Sub-Panel

1. Wall Connector
2. 60 A branch circuit
3. 100 A sub-panel / feeder breaker

Power Sharing Setup Without Sub-Panel

1. Wall Connector
2. 60 A branch circuit

NOTE: 100% utilization represents the worst case scenario for charging speeds, where the least amount of power would be available for each individual vehicle. In most situations, not all Wall Connectors would be actively charging a vehicle, which enables faster charging for the remaining vehicles.

Power Sharing Commissioning Procedure

1. Identify and configure the wall connector.
   One Wall Connector will be the designated leader and provide the configuration and controls for all followers. Install and configure the leader first. Follow the process in the Commissioning Procedure to connect and configure the leader.
2. Add up to five additional followers from the lead Wall Connector.
   Click on the power sharing card in the commissioning interface and add additional Wall Connectors to form a power sharing network by wirelessly pairing them to the leader.
   NOTE: When pairing followers, the leader will restart, and you will lose Wi-Fi connection. If your connection does not automatically return, ensure you are still connected to the leader's Wi-Fi connection and refresh the page.
   

3. Set network limits.
   Once all followers have been added, set the network limit. This is the total current that will be intelligently distributed between all devices that have vehicles charging. The minimum current limit is 6 amps per Wall Connector. A six-unit network will have a minimum limit of 36 amps. The maximum network limit is the sum of the nameplate ratings of all units in the network, minus one amp. A six-unit network of single-phase Wall Connectors can have a maximum network limit of 287 amps. If 288 amps or more electrical service is available in this scenario, then all units can charge at full power and power sharing is not needed. Chat with your electrician for further understanding of the maximum network limit.
   NOTE: In the event that your leader and followers have different circuit breakers, you have to individually connect to each of the followers on different breakers via the Wi-Fi broadcast, and then set the correct breaker limit.
   NOTE: For example, in a four Wall Connector network with two 60 amp breakers, one 50 amp breaker and one 20 amp breaker where the leader has a 60 amp breaker, individually connect to the Wall Connectors with 50 amp and 20 amp breakers and set their current limit in the commissioning interface using the Commissioning Procedure.

4. Enable power sharing network.
   Once your power sharing network is fully established (followers paired and network limit set), you will have the ability to enable the network.
   NOTE: No units in the network will be able to charge the connected vehicles if the power sharing has not been enabled.
   

WALL CONNECTOR LEDS

Light Codes
Startup
Once energized at the circuit breaker, every LED (seven total) on the faceplate will illuminate for up to five seconds.

After Startup
After Wall Connector is energized at the circuit breaker, certain green LEDs (depending on the circuit breaker size) will illuminate for 10 seconds. See table below for exact light codes.

Circuit breaker	60 A	50 A	40 A	30 A	20 A	15 A
Maximum output	48 A	40 A	32 A	24 A	16 A	12 A

NOTE: To re-display the green LEDs after the initial 10 seconds, press and hold the charging handle button.
When multiple Wall Connectors are linked for power sharing, the center blue LED will illuminate during the 10-second startup window.

Other

Standby, waiting to plug in	Charging in progress	SSID broadcasting, ready to commission	Waiting to charge, communicating with vehicle
Top green solid	Every green streaming	Green pulsing	Blue solid

Fault Codes

All red blink codes pause for one second, and then repeat.
Light Bar	What It Means	Details
No Lights	Power supply issue, charging disabled	Verify that the power supply is turned on. If the issue persists, have an electrician remove the Wall Connector from the wirebox and confirm that voltage is present at the terminal block using a multimeter. Record the voltage readings for the following: L1 to L2/N, L1 to Ground, L2/N to Ground.
Solid red	Internal, charging disabled	Turn the circuit breaker off, wait 5 seconds, and turn it back on. If solid red light remains, document part number and serial number, then contact Tesla Energy.
One (1) red blink	Ground fault circuit interruption due to unsafe current path, charging disabled	Inspect the handle, cable, Wall Connector, and vehicle charge port for damage or signs of water ingress. Have an electrician check that ground is not directly connected to a conductor wire in the branch circuit.
Two (2) red blinks	Ground assurance fault, high ground resistance detected, charging disabled	Verify that the Wall Connector is properly grounded. The ground connection must be bonded in the upstream power supply for proper operation. Check all physical connections, including the wirebox terminals, electrical panel(s), and junction boxes. In residential power supplies, check the bond between ground and neutral at the main panel. If connected to a transformer, contact the transformer's manufacturer for direction on how to bond the ground connection.
Three (3) red blinks	High temperature detected; charging limited or disabled	Verify that Wall Connector is connected to Wi-Fi and updated with the latest available firmware for optimal temperature sensing functionality. Check the faceplate and cable handle for excessive warmth. Have an electrician remove the Wall Connector from the wirebox and verify that the conductors used are sized correctly and that the terminal block is torqued to specification.
Four (4) red blinks	Internet connection lost, online features disabled	Check for objects that could interfere with the area's Wi-Fi signal strength. Confirm that the local Wi-Fi router is operational. If the Wi-Fi password was changed recently, follow the commissioning process on your mobile device to update the Wi-Fi settings.
Five (5) red blinks	Power-sharing communication issue, charging reduced	Check for objects that could interfere with the area's Wi-Fi signal strength. Follow the commissioning process on your mobile device to re-link the Wall Connectors for power-sharing.
Six (6) red blinks	Overvoltage or poor grid quality detected, charging disabled	Verify that the power supply is nominal 200-240 volts. If the issue persists, have an electrician remove the Wall Connector from the wirebox and confirm that voltage readings are as expected at the terminal block using a multimeter. Record the voltage readings for the following: L1 to L2/N, L1 to Ground, L2/N to Ground.
Seven (7) red blinks	Vehicle overcurrent detected	Reduce the vehicle's charge current setting. If the issue persists and the attached vehicle is manufactured by Tesla, record the vehicle's VIN and approximate time of the fault and contact Tesla. If the vehicle is not manufactured by Tesla, contact the vehicle's manufacturer.

Additional Assistance for Red LED Faults
A Wall Connector's alerts are visible in the browser commissioning wizard (for instructions on how to connect to the commissioning wizard, see Commissioning Procedure).
If additional assistance is required, have the following information prepared before contacting Tesla:

• Short video of Wall Connector LED activity during faulted state
• Photo of Wall Connector's part number and serial number (located on the side label)
• Timeframe that the issue was observed
• VIN of vehicle that plugged into Wall Connector at time of faulted state
• Photo of any error messages displayed on the vehicle's screen

Visit tesla.com/support/contact or scan the QR code below to request support.

Optionally, for owner support and issue troubleshooting: (888) 765-2489
For North America Electrician and Installer support: (650) 963-5655

IMPORTANT SAFETY INFORMATION

Read all instructions before using this product. Save these instructions. Wall Connector features built-in Type B RCD.
This manual contains important instructions for the Tesla J1772 Wall Connector that shall be followed during installation, operation, and maintenance. Please review all warnings and cautions before installing and using the Wall Connector.

When using electric products, basic precautions should always be followed, including the following.

Documents / Resources

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