For full 48 A output, Tesla specifies a 60 A circuit breaker, and the wire must be rated for that breaker under the National Electrical Code and Tesla’s installation manual. With copper conductors in conduit, that is commonly 6 AWG rated at 75°C, but cable type, run length and local code can require a larger size. Smaller breakers are allowed and simply set a lower output.
Breaker and Typical Copper Wire
| Breaker | Output | Typical copper wire* |
|---|---|---|
| 60 A | 48 A | 6 AWG (method-dependent) |
| 50 A | 40 A | 6 AWG or 8 AWG depending on method |
| 40 A | 32 A | 8 AWG |
| 30 A | 24 A | 10 AWG |
*Orientation only. Follow Tesla’s installation manual and the NEC; NM-B cable often needs a larger size than THHN in conduit.
Installation Notes
- Most Wall Connectors connect to L1, L2 and ground; check the manual for neutral requirements.
- The output setting must match the breaker.
- A load calculation confirms the panel can support the circuit.
- A permit and inspection are often required.
See what size wire for an EV charger and what size breaker.
Other 48 A Chargers
The EVDANCE EV-ACT5006T 48A Level 2 wall charger also delivers 48 A hard-wired on a 60 A circuit or 40 A on a NEMA 14-50P plug.
Frequently Asked Questions
What breaker for a Tesla Wall Connector?
60 A for full 48 A output; smaller breakers give lower output.
Can I use a 50 A breaker?
Yes; set output to 40 A.
Does it need a neutral?
Usually not; check Tesla’s installation manual.
Related Reading
Key Takeaways
- 60 A breaker for 48 A output.
- Wire must be rated for the breaker; often 6 AWG copper.
- Follow Tesla’s manual and local code.