Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
  • Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
  • The final cut of TMC Podcast #27 is available now with topics time-stamped. We discussed: Consolidation in LiDAR manufacturers; Volvo EX90 shipping with LiDAR; FSD Beta Full Release in N.A.; FSD detecting autopilot cheats, Gwen Shotwell directly overseeing SpaceX Starship; and more. You can watch it now on YouTube. We should have it published to podcast networks shortly.

Installing 2 Wall Connectors


Moderator, Model 3, Tesla Energy Forums
Nov 28, 2018
Riverside Co. CA
What type/size wires will I need for 2 WC? Probably will be using 100a breaker so it can be shared at the same time.

Here is the page that tesla provides as guidance for sharing power from gen 3 wall connectors. Have you checked here?



Well-Known Member
Aug 21, 2013
Los Altos, CA
In addition to the above, make sure to check the installation manual.

If you want to run a 100A circuit from your main panel, you should put a sub-panel near the Wall Connectors. You don't have to use the Power Sharing feature if you use 50A breakers in the sub-panel. If you want the maximum 48A charging speed, then you have to use 60A breakers and the appropriate gauge wire.

People think a subpanel is expensive, but the parts are not expensive.

That's only ~$60 for the sub-panel and two 60A breakers. The 100A run from the main needs 3ga copper THHN in conduit and the Wall Connectors need 6ga copper THHN in conduit. If you want to use Romex for the 100A run, you would need 1ga copper or 1/0 Aluminum wire.
  • Helpful
Reactions: Rocky_H

About Us

Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.

Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.