GE panel to NEMA 14-50 charger 3 wire?? Model 3 - Tesla-Buzz Forums | Model S, Model X, and Roadster
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post #1 of 1 (permalink) Old 01-16-2019, 04:17 AM Thread Starter
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Join Date: Jan 2019
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GE panel to NEMA 14-50 charger 3 wire?? Model 3

Hi Folks,

New to this forum and wanted to share my take on doing the Installation DIY. I’m almost ready to wire the breaker but gave a small problem. NO Ground bus bar to connect my ground wire.

I’ve read lots of post that all pretty much have these three things in common.

50 Amp breaker
6 gage 3+ground wire
NEMA 50 Amp receptacle outlet.

My first question is I have a 2018 Model 3 with a stock portable charger rated at 32Amps maximum at 240 volts. Why do I need a 50 Amp barker if the factory charger is only rated at 32 Amps maximum current? Is 40 Amps not code?? Circuit breakers are designed to trip a fault if wires take on to much current. So putting a 50 Amp to run 32 Amps maximum is a mystery to me. Shouldn’t it have a 40Amp to protect the Tesla charger wires?

Secondly, my home was built in 2005. I have a GE Panel with no ground Bus bar. It only has Neutral bus.

Since I’m only running one dedicated outlet directly from the breaker, and no ground to connect. Why can’t I just pull the white wire and run my two hots and ground direct to the Neutral bus?

The NEMA 14-50 outlet is located behind the panel so minimal wire is needed.

I’m not an electrician here, but lately I can’t find any wiring jobs done that reflect my type of panel. Specially the issue with the 32Amp charger taking on a higher Amp breaker that could be unsafe and prone to melt and catch fire.



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