Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
Register
  • The final cut of the 9th episode of the Tesla Motors Club Podcast, featuring Chad Schwitters, the former president of Plug In America, is now available. You can watch it now on YouTube or listen to it on all major podcast networks.

Mobile connectors with new S

DerbyDave

Active Member
Jul 2, 2020
2,310
1,354
Kentucky
As of the 2020 last model, a J1772 adapter is included. The 14-50 is available separately, or within a bundle.
 
Buy your 14-50 adapter now ASAP.
or make one yourself from off the shelf outlets and plugs and #6 3 wire cable from The Home Depot. MUCH cheaper. Of course, you need to know things like how to tighten a screw, strip wires, use colored wires, etc. And don't listen to folks who run around like Chicken Little claiming, "Your house will burn! Your house will burn!" It won't.
 

Rocky_H

Well-Known Member
Feb 19, 2015
7,851
9,882
Boise, ID
Huh. I'm going to have a list of questions/disagreements for this.
or make one yourself from off the shelf outlets and plugs and #6 3 wire cable from The Home Depot.
I am genuinely curious what you think this can do. The only mobile connector adapter plug that comes with the car is the 5-15. Are you suggesting that someone build a pigtail adapter from parts that can go into the 14-50 outlet on the wall and then convert that to a 5-15 receptacle that his only Tesla plug can go into? Do you realize what would happen with that? It would work, but the Tesla 5-15 plug would still signal 12A maximum that the car is allowed to pull. That would not at all be an effective use of a 14-50 outlet on a 50A circuit. Buying an official Tesla 14-50 plug will signal the 32A maximum that the mobile connector can provide.
MUCH cheaper.
I would not really call that "MUCH" cheaper. The adapters from Tesla are now $45. Buying the plugs and receptacles and cable and wire strippers are going to run at least $20. Plus this will take someone's time to do it, which is worth more than $0. So this is about something like $20 savings. I am one of the people on here that tries to caution about wasting hundreds of dollars that others think is no big deal, but for saving $20 to build a homemade thing? And as I mentioned above--for something that won't really even have the full capability of buying an official one? That just doesn't seem worth it.
Of course, you need to know things like how to tighten a screw, strip wires, use colored wires, etc. And don't listen to folks who run around like Chicken Little claiming, "Your house will burn! Your house will burn!" It won't.
Right. It's possible for someone to make something well enough that it's not inherently really dangerous if they do it right, but it's more than just that:
1. Homemade can't signal the amp limit correctly
2. The OEM ones have a temperature sensor in the plug head that is up against the outlet in the wall that can detect heat. This extra pigtail connection would not have that safety check there. (The Tesla 5-15 plug would still have that, but it would only be sensing heat in the pigtail receptacle it's plugged into.)
3. Going from 14-50 outlet to 5-15 outlet to 5-15 plug to UMC is adding an extra set of plug connections, which is more resistive and weak points in the chain. So that is a worse overall connection. But as mentioned, this couldn't run at more than 12A anyway, so it's not as bad as higher current with those extra connections.
 
  • Like
Reactions: ucmndd

ucmndd

Well-Known Member
Mar 10, 2016
8,385
16,355
California
or make one yourself from off the shelf outlets and plugs and #6 3 wire cable from The Home Depot. MUCH cheaper. Of course, you need to know things like how to tighten a screw, strip wires, use colored wires, etc. And don't listen to folks who run around like Chicken Little claiming, "Your house will burn! Your house will burn!" It won't.
I'll take "Worst Advice Ever to Save $45" for $1000, Alex.
 

Rocky_H

Well-Known Member
Feb 19, 2015
7,851
9,882
Boise, ID
Well, I want to give a little grace for this. For a different kind of circumstance, this might be useful, like if someone already did have a 50A Tesla plug but needed to convert it to another 50A outlet type. Maybe that could be worth it to build something, because you are at least getting the same kind of functionality, but in this case, where the only Tesla plug the person has is going to limit the current to 12A no matter what, it just doesn't really accomplish what someone would want.
 

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.


SUPPORT TMC
Top