Wall Connectors...did you purchase/install one? If so...

Wall Connectors...did you purchase/install one? If so...

I just ordered my Tesla with a planned delivery date in Mid-June.

I'm trying to get my home charging station set-up and configured (50 amp).

I'm curious to hear who has installed the Wall Connectors at their home. And, their reasons for doing so...

Thank you so much.


wayne | 2015年5月20日

I think it is a bit of a frill, but I got it since they lowered the price to 750. If you buy it with the car it has the same warranty as the car, otherwise it is a year I believe. It's nice to be able to tell at a glance from the house-garage door if the car is charging. Also looks cool. That's about it.

Grinnin'.VA | 2015年5月21日

@ michael.o.mcgrath | May 20, 2015

I'm curious to hear who has installed the Wall Connectors at their home. And, their reasons for doing so...

I got an HPWC in my garage at a total cost of about $2000.

My reasoning:

1. The HPWC is the best available charging setup for home charging.

2. My HPWC with its 100-A 240-V circuit requires a little over 5 hours for a full range charge from a very low SOC. The 'dryer circuit' option takes about twice as long. Will I ever arrive home late at night with a very low charge with a long day's driving scheduled the next day? I don't know, but with the HPWC I have that covered.

3. Why spend $100K on a car that's intended for home charging and then save a few bucks on my home charging?

nosken | 2015年5月21日

The electrician that installed mine recommended not using the HPWC, since installing that would require additional costs because you have to install a cut off that is within sight of the unit.

They simply installed a 50 amp 14-50 connector, and it works fine.

I was under the misconception that I would have to take my UMC with me at all times, and I leave it at home, unless I'm taking a road trip.

Goose | 2015年5月21日

I installed a NEMA 14-50 outlet in my garage ... My thinking was that I really don't need anything faster for overnight charging, and my home's resale value would be better with an outlet that any EV owner could use (I also have solar panels).

EdwardG.NO2CO2 | 2015年5月21日

I agree with @Grinnin'.VA logic but would also add a financial perspective. The HPWC is now only $100 more than a spare Mobile Connector Bundle ($650) which should be bought when you use the supplied one as a home charger. Inevitably you will find you have forgotten the cord at home just when you need it most so the spare cord is a must have insurance premium. Buying the HPWC will save you the need to buy a spare charging cord. In addition the HPWC can be set to a lower amperage (using dip switches inside the unit) if your electrical structure can't easily support the maximum 100 amp draw. I set mine to 50 amps to reduce the load and allow a second Tesla to to be plugged into a Nema 1450 simultanisly.

Brian H | 2015年5月21日


Grinnin'.VA | 2015年5月21日

@ nosken | May 21, 2015

The electrician that installed mine recommended not using the HPWC, since installing that would require additional costs because you have to install a cut off that is within sight of the unit.

My HPWC circuit doesn't include "a cut off that is within sight of" it. It was installed by one of the electrical service companies in Fairfax County, VA where I live. Possibly the building code where you live differs from Fairfax County's code. Where do you live?

SkyWalker | 2015年5月24日

In Colorado, code indicates 100 amp line must have an easily accessible cut off. My electrician had to return to install it when it did not pass inspection. (My circuit breaker panel box is in the basement)

Glad I went with HPWC despite slightly higher cost. Much sturdier set up for charging. +1@ EdwardG -the 1 time I will need it, I might forget to unplug the UMC to take with me. It then makes sense to pay $100 extra & leave the UMC in the car all the time.
@Grinnin'.VA Is your circuit breaker panel within line of sight of your HPWC? I would not have needed a cutoff if the panel was in the garage.

nosken | 2015年5月25日


I am in California. It is code here. I hope future-proof, and have the cutoff installed when they hook my Solar up.

milesbb | 2015年5月27日

Looking at NFPA 70 on the requirement for a HPWC disconnect. Article 625.42 requires a lockable disconnect on a circuit greater then 60 amps. The location of the disconnect shall be "readily accessible". No requirement to be within sight. I see not difference between the supplying panel being located in the garage or the basement.

Readily Accessible. Capable of being reached quickly for operation, renewal, or inspections without requiring those to whom ready access is requisite to actions such as to use tools, to climb over or remove obstacles, or to resort to portable ladders, and so forth.

Does any Electricians out there know if devices are available that can provide locking on the common home panel that meets the requirements of 110.25? If so this seems to be an easier way to satisfy the requirements of Article 625.42 then installing a local disconnect.

jimlux | 2015年5月29日

Most home circuit breaker panels have a padlock fitting. The lockable disconnect does not have to be on a per-circuit locking basis. That is, you can unlock your panel board, flip the breaker off (disconnect), then relock the panel. This should meet the requirement of 625.42.

As always, your local Authority Having Jurisdiction (AHJ) may have a different opinion.

The "within sight" requirement usually applies to things like motors and machinery where you want a positive visible lock-out for safety. Otherwise, it's typically a "readily accessible" requirement (e.g. you don't have to get a ladder or bucket truck or special tools).

There are also plug in circuit breakers that have a lug for lockout. It looks like a metal tab that sticks up next to the lever that actuates the circuit breaker. The lock would have to be small to fit under the lid of most panel boards.

And, there are doohickeys that clamp over a single breaker to lock it out:

Whether this would meet the code requirements is up to your AHJ.

Nantang | 2015年6月1日

Ordered dual chargers and the HPWC; the car is "in transit," and the wall connector gets installed tomorrow. I'm somewhere between euphoric and mass panic.

I ordered the combo because it will make it possible to go from nearly drained back to almost full in four to five hours instead of eight or nine. I have two hour commutes each way to work and back, and I want to be able to use my car on my days off. There's a supercharger along the route, but I don't want to rely too much on it, especially since it's not my only workplace.

Dwdnjck@ca | 2015年6月1日

I simply moved an unused dryer plug.

Emobile | 2015年6月3日

I got the HPWC for convenience and because I didn't want to forget the UMC when going to our weekend getaway home. Since we will be moving in the next year or so, I installed a Nema 14-50 outlet, and wired the HPWC with a cord and set the dip switches appropriately.