Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.

PowerWall - Wire size AWG


I am planning to install a Powerwall within the next year.
There is not much space around my electrical panel. I will have to put the power wall quite a distance away (40ft).
I have a chance right now to run some cables before putting drywall up.

What wire gage should I put in for 1 or maybe 2 powerwalls?

Thank you


Well-Known Member
Aug 21, 2013
Los Altos, CA
Each Powerwall uses a 30 amp 240V circuit. Your electrical contractor can plan accordingly. 10 AWG copper is usually sufficient. The larger issue I would want to consider in your situation is what space is available for the Gateway and Generation Panels and which circuits you want backed up. You didn't make it clear whether this is a remodel or new construction and how much other electrical work is going on now.
  • Informative
Reactions: Nvbob and FlyF4

Products we're discussing on TMC...

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.