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Nema 14-50 or Tesla wall connector?

Nema 14-50 or Tesla wall connector?

So do you know if the Tesla wall connector is faster than a nema 14-50?

I'm going to add a 60 amp circuit either way..  I see conflicting reports..

Basically that the X maxes out at 30mph.. per the wall connector spec sheet and the nema plug maxes out at either 30 or 20..? Think it says 20mph on a spec sheet on Tesla home charging.. obviously I'd rather not drop $500 on the Tesla wall connector if I don't have to..

leet-ice | 19 January, 2019

First post.. thought this was in model x forum, but looks like it's not? Anyways this is regarding a new model x.

lilbean | 19 January, 2019

Do you need it to charge quickly? Are you doing a lot of driving daily? I find that mine charges just fine with the NEMA.

markcohen | 19 January, 2019

@leet-ice, unless you drive a lot and need to charge in the middle of the day, I doubt that you'll need the faster charging that the wall connector provides. I set my X to start charging around 9pm when the electricity rates go down in our area and the 10 hrs that it gets til 7 is way more than I need to get it back up to 85%. Two reasons (besides lots of miles) to consider the wall charger: 1) you get one free for a referral; and 2) you want to keep the mobile charger in the car so that it is always available - if that is the case, then buying the wall charger for your home solution makes sense.

leet-ice | 19 January, 2019

How many mph do you guys get with nema? 20? I only have 6 hours of super off peak, then sdge gets me all other hours..

packpike | 19 January, 2019

30 with a Gen1 UMC, 20 with Gen2.

kenj | 19 January, 2019

Wall connector
https://www.tesla.com/support/home-charging-installation/wall-connector

Amps Model 3, Model S, Model X
60 48 11.5 kW 44 34 30
50 40 9.6 kW 37 29 25

Mobile connector
https://www.tesla.com/support/home-charging-installation/mobile-connector

NEMA 14-50
240 volt / 50 amp breaker (outlet installation guide)
Maximum 32 amp output
Buy adapter for Gen 2 Mobile Connector

Model 3, Model S, Model X
30 23 20

Solarman004 | 19 January, 2019

@leet-ice, back to your original post: you can't use a 60 amp breaker with the NEMA 14-50. It would be dangerous and not pass code.
The 14-50 should be on a 50 amp circuit, and the appliance (the UMC) will draw no more than 40 amps continuous current (80% of the max circuit current). The newer UMCs are limited to a lower current, 32 A I believe.
You can use a 60 A breaker with the HPWC, but the charger will have to be internally set to 48 amps max current.
So to answer your question, the HPWC on a 60 A circuit will charge faster.

nutner | 20 January, 2019

NEMA 14-50 with a 50amp fuse and #6awg wiring for 40 feet, 240v at 40 amps via mobile charger and I get 28 mph at home. Did not feel the extra few mph from the wall charger was needed for my needs, but my wiring will support it if needed.

bp | 21 January, 2019

When we built our house, we had a 14-50 outlet installed on one side of the garage on a 50A circuit and an HPWC installed on the other side on a 100A circuit.

For the 14-50 outlet, we have been using Tesla's 14-50 connector, providing 40A of charging [8.8 KWh per hour].

We recently installed our black signature HPWC and connected it to the power line used for the 14-50 outlet. Because the HPWC is hardwired to the power line, and the wire used could support a 60A circuit, the electrician upgraded the breaker to 60A, so we're now able to get 48A of charging using the HPWC [10.5 KWh per hour].

Tesla recently introduced an HPWC with a short 14-50 line/plug. While this would make installation easier, it will still be limited to providing only 40A of charging, equal to the 14-50 connector. Though I suspect Tesla will discontinue the 14-50 connector - now that the HPWC with the 14-50 plug is at the same price.

We really didn't need the extra 8A of charging - we installed the HPWC because it looks "cooler" and has better cable management than the 14-50 connector (using Tesla's cable organizer). Though the extra 8A of charging was unexpected.

As a Tesla owner since early 2013, we've had a lot of experience charging our Model S and X vehicles on 30A, 50A and 100A circuits. Even with the larger 100 KWh battery packs for our current X 100D and S 100D, there usually won't be a need for more than a 30A circuit (equivalent to a dryer outlet), which can charge about 5.2 KWh per hour.

Redmiata98 | 22 January, 2019

It also depends if you are on time interval rates from your electric company. I have a four hour window for “super off peak” rates @$0.05/kw and a 3/1 hour interval on either side @$0.08/kw compared to $0.18/kw the rest of the time.