Finally !! I got my first tesla delivery!

Finally !! I got my first tesla delivery!

Finally !! It took about a month to get my wall charger for my soon to be arriving X.

Is there an ideal location in the garage for it installation? Front wall, left or right side walls?

Appreciate your feedback.

Thank you.

Tâm | 10 novembre 2015


That depends how many cars do you want to share it with.

It also depends whether you park head-in or back-in.

It also depends whether you have a wall/column dividing two or more garage doors or not.

For example:

If you want to share your HPWC with 2 head-in cars, you might as well place it between the two doors.

If you want to share your HPWC with 2 back-in cars, you might as well place it on the wall that's opposite from the two doors.

If you don't share, then place it around your rear left of your car where your charge port is.

rossRallen | 10 novembre 2015

Wow! It took 4 days over a weekend to get mine with standard FedEx ground shipping.

I agree with @Tam on placement. Now, you have to get an electrician. Finding one seems easy, but the good ones are often booked for months in new construction and remodels. Best sure to review and understand the installation manual to double-check what the electrician proposes. You're dealing with high power here and don't want any shortcuts or mistakes. Ask questions.

Best sure your electrician uses conductors that are sized according to your local electrical codes for the maximum load (80A), and I'd recommend being conservative (use one size larger wire diameter) to minimize voltage drop and parasitic heating between your distribution box and the HPWC.

I'm waiting another three weeks for my electrician to show up. Who knows when my Model x will arrive? Before New Year's Eve, I hope, but I'll be ready for it.

ali | 10 novembre 2015

Thank you both for your feedback. Much appreciated.

Roamer@AZ USA | 10 novembre 2015

I have a single 18 foot door so I back my car in on one side and my wife pulls in forward on the other side, We have chargers located near the charge doors of each car. I am too lazy to drag cords around. We pull in, plug in, and walk away. I set mine up with one 100 amp and the other on a 50. Both are HPWCs. In almost three years we have never really needed the 100 amp charge rate. But it is there and can be used if needed.

If I pull my car in forward my wife's 100 Amp cord will easily reach my car. I have never needed the faster rate.

If you stood in the middle of the garage facing out, my wife's charger is on the right side wall near the door and my charger is on the left side wall near the back. My charger is mounted to also reach into an adjacent RV garage where another car also could be charged. In both locations the way we park we are a few feet from the charger and don't need to deal with dragging around cords.

I actually prefer being backed in. If I am loading things the rear hatch is easy to access and the drivers door opens in the direction I approach the car. The frunk, that I never open, is furthest away and near the garage door. With the backup camera backing in is painless.

henry | 11 novembre 2015

We did something different with ours we made dual sided outlets inside & out on left & right of garage. It's not unusual for us to park outside. So we can go head in or rear park. There is a super charger not too far if we would need to charge up quick. I'm putting in some lawn hose hooks to hold the cords. It doesn't cost much more to do this once u run the line. Important to get good electrician with experience doing this & they r right they get booked fast. Can't wait for my X!

Roamer@AZ USA | 11 novembre 2015

Only problem is if the rumor about on board single chargers is correct then you don't get much with a HPWC. If they put the 48 amp as a single only charger you won't be able to use the full 80 amp output possible with a HPWC.

Who knows at this point what will ship in the cars. Rumers running wild.

Roamer@AZ USA | 11 novembre 2015

@henry, With a 50 amp outlet that uses the Mobile Cord your max charge amps will be 40 amps. We ran two Model S cars that way for over a year before I finally got around to installing the HPWCs. For most people and most uses 50 amp outlets are more than adequate.

paradis | 11 novembre 2015

I have decided, after talking to Tesla, that even if the car ships with a 48A charger there may be an upgrade to the 72A down the road. They are getting a lot of negative feedback and apparently are revisiting the issue. Therefore, I am going to install the HPWC so if the larger charger becomes available I can utilize its full capacity. I have also heard that the HPWC's can occasionally break, so (belt & suspenders) I am also having the electrician install a 14-50 outlet next to the HPWC. He says the additional cost for the second outlet is minimal once you are installing the HPWC.

aesculus | 11 novembre 2015

@paradis: Lets hope your positive thinking and action to install a HPWC is what it takes to change fate. Good job.

Now get to work on the folding second row seats. :-)

rossRallen | 11 novembre 2015

Even if we can only charge the MX at 48A, having a HPWC is a more robust solution than using the portable charger that comes with the car. Cable management is neater, and you don't have to pull kit out and put it back in every day. That way, your mobile charger stays neat in the trunk or frunk when you need it on the road. My preferences, anyway.

GLO | 12 novembre 2015

Curious why everyone here gets a wall charger. We installed a plug for our Model S three years ago and it's all we need. Curious.

Tâm | 12 novembre 2015


It's a matter of choice.


-Dedicated, always ready on the wall waiting for you.
-That means: You don't have to open the trunk to get Mobile Connector each charging time.
-That also means: It's more reliable.
-The cable is longer (25 feet to share among 2 cars.)
-You can can charge quicker if your on-board charger can take more than 40 Amps and up to 80 Amps.
-It looks nice.

-It costs $750 extra to get it.
-It costs more to install.
-It's fixed, not mobile.

Mobile Connector:
-It comes with the car with no extra cost.
-It's cheaper to install NEMA 14-50 outlet for Mobile Connector.
-It's mobile so it's more flexible for home and on the road.
-It's compact.

-It's mobile so you need to pop your trunk open to get it each charging time.
-It's mobile with different adapters which mean more moving parts, more friction produced parts which may mean prematurely worn out/overheated pins at connecting points.

-The cable is shorter (20 feet that may not reach a second car.)
-If your on-board charger is capable of take-in more than 40A, 40A is what Mobile Connector can give you.

ian | 12 novembre 2015

Well put Tâm!

Tâm | 12 novembre 2015



Please add:

-If it’s out of service, you can use Mobile Connector with NEMA 14-50 outlet (if you installed that) or slower outlets (240V 30A dryer socket, 120V, 15A regular home outlet…)

Mobile Connector:
-If it’s out of service, you don’t have a backup method to charge at home unless you bought another one for $650.00.

Roamer@AZ USA | 13 novembre 2015

The simple answer is. If you plan to buy a second UMC, so you can leave one in the car, then you just as well go HPWC and power it as high as your car and house can handle.

HPWC is priced $100 higher than a UMC. When you add the cost of an outlet install in addition to the wiring the cost difference UMC to HPWC is insignificant.

All that said the car works perfectly fine on a 50 amp outlet charging with the UMC that comes with the car.

They all work fine. Install and use whatever works for you and your charging needs.

ali | 13 novembre 2015

Thank you all for your valuable feedback. It's really appreciated.

Now I just have to find a good electrician here in NJ.

And wait for X :)

rossRallen | 13 novembre 2015

@ali - good luck with the electrician.

Another thought: If your garage has two-line 80A breakers (as does mine), then the HPWC manual says that in the US you can only supply 64A to the vehicle. With 48A on board, it's 75% of maximum.

I'm not worried about 48A at home. It's fine: 80% or full-range overnight. It's the destination charging I'm concerned about, where 2-5 days out of the year I might be competing for scare resources and a lower charge rate with no Supercharger nearby.

So, like those darn non-folding second-row seats, the 48A charger is becoming a moot point although I've squawked plenty to NA Sales and have gotten three responses.

@paradis - Brilliant idea about installing a 14-50 outlet next to the HPWC for backup! I'll do that! Thank you for that.

Someone said in another thread that perhaps Tesla wants to limit charging rates to ensure maximum battery performance under an 8-year warranty. I don't blame them for that. It's a practical engineering decision. The regular use of Superchargers have been reported by some to shorten range due to the high charge rate, and something less than 48A might be recommended for daily topping-off.

rossRallen | 13 novembre 2015

Regarding @paradis's idea of having an HPWC and NEMA 14-50 connector placed together for inexpensive backup in case a HPWC needs to be replaced or serviced:

I discussed this idea with Tesla's Charging Installation Program Manager and received the following response. If you intend to have both installations, you need to consider this.

"The electrical code doesn't allow a circuit like this to be spliced, both the NEMA 14-50 and the Wall Connector would each need their own dedicated wiring and circuit breaker. Putting the NEMA 14-50 in line with a breaker from the splice is not a code compliant method of installation. You can run the circuit from the main panel to a sub panel in the garage then install the Wall Connector and NEMA 14-50 off of that subpanel.

"Tesla vehicles do not require a neutral to safely charge, the neutral and the grounding system should already be bonded back at the main panel. An easy way to confirm this is to take voltage reads from L! and the ground and L2 and the ground. You should get about 120v on each reading, if you get zero then the neutral and grounds systems are not bonded."

Tâm | 13 novembre 2015


It makes sense as a redundancy system, you don't want all eggs in a basket.

So each should have their own circuit.

If one got shorted, you can rely on the other one while waiting to fix the bad one.

rossRallen | 13 novembre 2015

@Tam: Yup. Failure of the HPWC is likely a very small possibility, but it could be a serious inconvenience. Running an extra three wires through the conduit and adding two more breakers at the junction box is cheap insurance. That's what I am going to do.

Besides, it lets you test your mobile charger before a long trip. That's worth something.

paradis | 13 novembre 2015

@ross & Tam - Yes the electrician will run separate lines to each. Not sure yet if we need a sub-panel, but probably. It's fairly easy in my case because my main panel is in the garage on the same wall as where the HPWC and outlet will be so they are very short and easy runs.