HPWC M3P

[Sporty]

I have a NEMA 14-50 (with a 50a breaker) socket near my car and could install an HPWC and set it to 40a. Would it charge any faster them the gen 2 UMC that comes with the car?

The following sort of implies "yes": Wall Connector
While Onboard Charger implies "no" that would be limited to 32a.

Thanks

 

[commasign]

Model 3 Long Range (RWD, AWD, and P) all have a 48amp onboard charger. So if you get a HPWC, ideally set it to 48amps on a 60amp breaker and you’ll get faster charging than the stock 32amp mobile connector.

 

[GigaGrunt]

I have a NEMA 14-50 (with a 50a breaker) socket near my car and could install an HPWC and set it to 40a. Would it charge any faster them the gen 2 UMC that comes with the car?

The following sort of implies "yes": Wall Connector
While Onboard Charger implies "no" that would be limited to 32a.

Thanks

UMC will charge your car at max 32A. HPWC with your 50A breaker would charge at max 40A.

 

[ewoodrick]

Do you really need it? The NEMA 14-50 give you a LOT of flexibility. I'd recommend just getting a second UMC and being happy. The slight increase in charging isn't really going to ever be noticed. 32A will generally get you charged in less than a few hours.

 

[commasign]

Do you really need it? The NEMA 14-50 give you a LOT of flexibility. I'd recommend just getting a second UMC and being happy. The slight increase in charging isn't really going to ever be noticed. 32A will generally get you charged in less than a few hours.

Agreed. 32amps is plenty. Going up to 48amps won't make much difference unless you drive a lot and you're trying to squeeze in all the charging during off-peak hours for better rates. Or if you're getting a second Tesla soon, it might make sense to go ahead and install two Wall Connectors in power-sharing configuration.

 

[Sporty]

There's a 50a breaker that I can not change. So 40a output is the max for me. Will the (m3p) car use the 40a or will use 32a?

If I'm only going to get 32a I will probably go with a second UMC but I would prefer something that I can attach to the wall as the parking area is shared with others in the building.

 

[MrMassTransit]

There's a 50a breaker that I can not change. So 40a output is the max for me. Will the (m3p) car use the 40a or will use 32a?

If I'm only going to get 32a I will probably go with a second UMC but I would prefer something that I can attach to the wall as the parking area is shared with others in the building.

If you go with the HPWC the car will charge at 40A.
If you go with the UMC the car will charge at 32A.

While there's a lot of love for the UMC on here (and my electrician says 70-80% of people use it to charge Teslas in his experience), I think there are compelling reasons to go with an HPWC in some situations. I'm on a 30A circuit and have one because I charge outside in common lot (condo). I think there's a value case to be made in your situation if you were considering buying a second UMC instead. If you're choosing between just having one UMC and the higher charge rate of the HPWC, then its really your call how much the features of the HPWC are worth to you.

 

[P85_DA]

Will the (m3p) car use the 40a or will use 32a?

Will use 40

 

[mike123abc]

You could also get the corded mobile connector (if it ever gets back in stock) for the garage and get 40 amp charging. It actually costs more than the HPWC, but if you already have the plug it is less expensive than having an electrician come out and do the HPWC. It would charge at 40 amps vs the 32amp mobile system.

 

[P85_DA]

You could also get the corded mobile connector (if it ever gets back in stock) for the garage and get 40 amp chargin

That is gen 1 version only ..newer ones as of last year on UMC max is 32a

 

[srs5694]

You could also get the corded mobile connector (if it ever gets back in stock) for the garage and get 40 amp charging. It actually costs more than the HPWC, but if you already have the plug it is less expensive than having an electrician come out and do the HPWC. It would charge at 40 amps vs the 32amp mobile system.

I thought I heard that some people reported problems pairing that Gen1 mobile connector with Model 3s -- or am I dis-remembering? (It wouldn't affect me personally since I had no plans to use one, so I didn't pay a lot of attention.)

 

[mike123abc]

I thought I heard that some people reported problems pairing that Gen1 mobile connector with Model 3s -- or am I dis-remembering? (It wouldn't affect me personally since I had no plans to use one, so I didn't pay a lot of attention.)

It is listed on Tesla's web site shop under Model 3 charging, I have not tested it but, I assume Tesla would not have it listed as a model 3 option if it did not work.

 

[M3Rider]

I have a NEMA 14-50 (with a 50a breaker) socket near my car and could install an HPWC and set it to 40a. Would it charge any faster them the gen 2 UMC that comes with the car?

The following sort of implies "yes": Wall Connector
While Onboard Charger implies "no" that would be limited to 32a.

Thanks

You get the lowest charging capacity out of combinations
NEMA 14-50 40amp + UMC 32amp + P onboard charger 48amp = 32amp
HPWC 100amp + (breaker+matching wire: 80% of 50amp =40amp) + onboard charger 48amps = 40amp

In my opinion, unless you're planning for multiple Teslas, paying extra for HPWC does not make a difference other than for aesthetic reason.

(14-50 receptacle + UMC) fully charge your P overnight, so the extra drops of juice do not make a difference.

 

[P85_DA]

HPWC 100amp + (breaker+matching wire: 80% of 50amp =40amp) + onboard charger 48amps = 40amp

Hmm.. if he puts 100a breaker and appropriate wire he should get max 48

 

[M3Rider]

Hmm.. if he puts 100a breaker and appropriate wire he should get max 48

"There's a 50a breaker that I can not change."

He's got an irreplaceable breaker, that's why.

 

[Rocky_H]

Will the (m3p) car use the 40a or will use 32a?

Well, you haven't been very clear about what kind of car you have. Is it the standard range, mid range, or long range? I guess "m3p" means performance version of Model 3? I think they only do those in the long range version.

You can have charging limits at a few places in the chain, and the lowest one is going to be your limiting factor:

1) At the wall--Yes, the 50A circuit can supply 40A total by electric code
2) At the connecting device--The mobile connector has a 32A limit, but a wall connector can go higher
3) The onboard charger in the car--the long range battery comes with a 48A max charger, but the mid and standard range batteries come with a 32A onboard charger.

So if you have a long range car, then you're looking at 32A or 40A, depending on mobile connector or wall connector.

 

[Sporty]

Yes - I have a Performance Model 3.

I ended up going with the “corded mobile connector” with the built on NEMA 14-50 plug, and the car charges at 40A.

I went with this over the HPWC after seeing the size of the HPWC - it was borderline larger then I wanted. And the Corded Mobile Connector of the Mobile Conenctor. Bundle on hopes for the (slightly) faster charging rate. Which worked out.

 

[mike123abc]

I wonder what ever happened to Tesla launches new Wall Connector with NEMA 14-50 plug

The HPWC with a 14-50 plug on it?

 

[Rocky_H]

I wonder what ever happened to Tesla launches new Wall Connector with NEMA 14-50 plug

The HPWC with a 14-50 plug on it?

I think that only existed for about a month and has been gone for quite a long time now.

 

[srs5694]

I wonder what ever happened to Tesla launches new Wall Connector with NEMA 14-50 plug

The HPWC with a 14-50 plug on it?

I think that only existed for about a month and has been gone for quite a long time now.

That's my understanding, too. If you really want something like that, there are options, though:

• Use a Gen1 Mobile Connector instead. This will charge a Model 3 at 40 amps, IIRC. I seem to recall hearing of some owners reporting compatibility problems, but I don't know the details. Those issues may have been resolved by now. (You could do the same with a Gen2 Mobile Connector, of course, but I assume you want the Wall Connector for a little more charging speed with an LR Model 3.)
  
• Get a hard-wired Wall Connector and replace the pigtail with a cord that has a plug. This would negate its safety rating (UL or whatever Tesla uses), though, and might have implications for weather-resistance -- but if you're installing it outdoors, hard-wired is better than using a plug.
• Buy a third-party EVSE. Many of these are available with NEMA 14-50 (or other varieties of plugs). You'd need to use Tesla's J1772 adapter, though, or replace the J1772 cable with a Tesla cable and plug. (I've seen someplace that sells Tesla cables, which I think can be used as replacements for J1772 cables, but I'm not 100% certain of that. This would raise the cost quite a bit, though, and could have safety implications.)