Tesla Universal Wall Connector Review

The Tesla Universal Wall Connector is our #1 recommended home EV charger. It works with both Tesla vehicles and J1772-compatible EVs, making it a perfect choice for households with different types of electric vehicles. With up to 48 amps and 11.5 kW charging speed, it provides efficient overnight charging for most modern EVs. The 24-foot cable gives you flexibility, making parking and charging a breeze, and its sturdy design means it’s built to last. That said, the fixed J1772 adapter could be a downside if you’re looking for something more easily replaceable.

Smart integration with the Tesla app takes the experience to the next level, offering real-time updates on charging status, energy use, and more. It’s especially useful for homes with solar setups, helping you manage energy more effectively. Plus, it’s future-proof with Tesla’s Power Share technology, ensuring it’s ready for whatever new EV standards come our way. That said, some users might find the setup a bit tricky, especially with advanced setups like vehicle-to-home charging.

Installation requires a licensed electrician, so it’s not something you should try to do yourself due to the high electrical load. While the setup is fairly straightforward for professionals, safety is key, and it’s best to leave it to the experts. The Wall Connector is packed with safety features, but that non-replaceable adapter might be a turnoff for some.

Tesla Universal Wall Charger Installation (60A Circuit Installation)

Here’s a detailed, step-by-step guide on how we professionally installed the Tesla Universal Wall Charger on a 60-amp circuit for our Tesla Cybertruck. We cover everything from selecting the right dedicated circuit breaker, wiring, and grounding to properly sizing the conduit for maximum charging efficiency at home. This ensures both safety and optimal performance.

Tools & Materials Needed:

• 60-amp double-pole breaker
• 6-gauge THHN or 6-gauge THWN-2 copper wire (two hot wires, L1 and L2)
• 10-gauge THHN or THWN-2 ground wire
• Conduit (PVC or EMT) – 3/4-inch for indoor or 1-inch for outdoor runs
• Manual hole punch
• Drill and core bits
• PVC adhesive and strain relief fittings
• Screwdrivers and torque wrench
• Tesla Universal Wall Charger

Here’s the full list of the top tools we use for every EV charger installation – These are the same professional-grade tools we rely on to get the job done right, every time.

Tesla Universal Wall Charger Wiring Diagram (60A Circuit Installation)

At the end of the installation, your setup should mirror the following wiring diagram for the 60-amp Circuit Tesla Universal Wall Charger installation, showing the connection from the sub-panel to the charger:

Installation Steps:

Turn off the Power

Start by turning off the power at the main electrical panel to ensure safety while working on the circuit.

Prepare the Subpanel

• Install a dedicated 60-amp double-pole breaker into your subpanel.
• Use a manual hole punch to create a hole for the conduit, sizing it appropriately (1-inch for PVC).
• Connect two 6-gauge THWN-2 wires (L1 and L2) to the 60A circuit breaker
• Connect 10-gauge ground to the ground busbar)
• Use a torque wrench to properly tighten the ground wire to the ground bar (25 in-lbs for ground wire and 45 in-lbs for the breaker).

Exterior Conduit Installation

• Note and mark the charger installation point (point of use) which should be 4 ft above the floor, with at least 8 in of clearance around it
• Install the conduit from the electrical panel to the Tesla Universal Wall Connector point of use.
• Run the two 6-gauge THWN-2 wires (L1 and L2) (from the 60A dedicated circuit breaker) and a 10-gauge ground (from the ground busbar) wire through the conduit.
• Attach strain relief fittings on both ends of the conduit to keep the wires secure and prevent stress on the connections.

Mount the Charger

• Remove the charger faceplate
• Attach the Universal Wall Charger to the wall using anchors.
• Ensure the conduit is aligned with the charger’s strain relief box adapter, which will house the wire connections.

Wire the Charger

In some instances, passing inspection requires wires rated for at least 4 amps since the Tesla Wall Connector allows amperage adjustments via a smartphone app. Always consult a certified EV charger installer to verify the correct wire size.

• Feed the wires from the conduit into the charger.
• Connect the two 6-gauge hot wires to the L1 and L2 terminals inside the charger.
• Attach the 10-gauge ground wire to the charger’s ground terminal.
• Use a torque wrench to tighten the connections to 50 in-lbs (as specified in the Tesla charger manual).
• Reinstall the charger’s faceplate securely.

Connect and Test

• Plug in the Tesla Universal Wall Charger and scan the QR code to connect via Bluetooth and Wi-Fi.
• Test the charger by plugging in your Tesla and verifying that the charging rate is around 48 amps or 11-12 kW.

Expert Tip

We recommended sealing the edges of the conduit where it meets the wall using silicone sealant to prevent water or debris from entering.

Tesla Universal Wall Connector Installation (Hardwired Wiring Diagrams)

The “Tesla Universal Wall Connector Installation (Hardwired Wiring Diagrams)” section offers detailed wiring diagrams for hardwired setups of the Tesla Universal Wall Connector. Each diagram corresponds to different circuit amperages (12A, 16A, 20A, 24A, 32A, 40A, 48A) and outlines the essential electrical connections, including circuit breaker ratings, wire sizes, and output power. These diagrams help electricians and homeowners perform safe and efficient installations for various home electric vehicle (EV) charging setups, ensuring optimal performance and adherence to electrical standards.

The Tesla Universal Wall Connector also allows installers to adjust the charger’s amperage through the Tesla One App, providing flexibility to align with your home’s electrical capacity. Certified EV charger installers can choose from six available amperage levels—12A, 16A, 24A, 32A, 40A, or 48A—to ensure compatibility with the electrical infrastructure and enhance charging efficiency. Note that this amperage adjustment feature is not accessible via the regular Tesla App, as confirmed during our installation and testing.

The table below provides detailed information on each Tesla Universal Wall Connector amperage setting, including the corresponding amperage, estimated range per hour, maximum output power, and required circuit breaker rating.

Tesla Universal Wall Connector 48A Hardwire Wiring Diagram (60A Circuit Breaker)

This diagram depicts the installation of the Tesla Universal Wall Connector on a 60A circuit, with a 48A continuous load (80% of the circuit’s capacity). This configuration provides an 11.4 kW output, designed for ultra-fast home EV charging.

Tesla Universal Wall Connector 40A Hardwire Wiring Diagram (50A Circuit Breaker)

The wiring diagram below illustrates the installation of the Tesla Universal Wall Connector on a 50A circuit, with a 40A continuous load (80% of the circuit’s capacity). This setup delivers a 9.5 kW output, perfect for high-speed home electric vehicle charging.”

Tesla Universal Wall Connector 32A Hardwire Wiring Diagram (40A Circuit Breaker)

This diagram shows the installation of the Tesla Universal Wall Connector on a 40A circuit, with a 32A continuous load (80% of the circuit’s capacity). This hardwired configuration delivers a 7.6 kW output, ideal for faster home EV charging.

Tesla Universal Wall Connector 24A Hardwire Wiring Diagram (30A Circuit Breaker)

The Tesla charger wiring diagram below shows the installation of the Tesla Universal Wall Connector on a 30A circuit, with a 24A continuous load (80% of the circuit’s capacity). This setup delivers a 5.7 kW output, suitable for fast home electric vehicle charging.

Tesla Universal Wall Connector 16A Hardwire Wiring Diagram (20A Circuit Breaker)

This wiring diagram illustrates the installation of the Tesla Universal Wall Connector on a 20A circuit, with a 16A continuous load (80% of the circuit’s capacity). This configuration provides a 3.8 kW output, perfect for residential EV charging.

Tesla Universal Wall Connector 12A Hardwire Wiring Diagram (15A Circuit Breaker)

The Tesla charger wiring diagram below shows the installation of the Tesla Universal Wall Connector on a 15A circuit, with a 12A continuous load (80% of the circuit’s capacity). This hardwired setup delivers a 2.8 kW output, ideal for home electric vehicle (EV) charging.

Home Assistant Integration with Tesla Universal Wall Charger

To integrate our Tesla Universal Wall Connector with our home solar system, we connected the solar panels to a Tesla Powerwall, which stores energy for efficient charging. The Powerwall then links to the Back-up Gateway, which is tied to the main electrical panel. From there, the electrical panel connects to a 60A double pole breaker, which controls the power flow to the wall connector. The wiring includes L1 and L2 wires, as well as ground and neutral connections. This setup allows us to charge our electric vehicle using clean, solar-generated energy while maintaining optimal energy management with the Powerwall.

Tesla Universal Wall Connector with Solar and Powerwall Integration Wiring Diagram.