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Multi-EV Households

Any multi-EV households out there?--in a couple of years, we could be looking at a Model S, a Model X and a Nissan Leaf parked in our driveway. How are folks handling charging (single charger, multiple chargers), how many charging outlets, and did anyone need to upgrade utility service or house wiring?

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As one who owns both a Roadster and an S I qualify. I am sure there are other dual Tesla owners and I know there is at least one dual S owner.

I forgot to answer the second part of your question. My household driving habits allow me to be quite happy having just one 14-50 outlet for both cars.

We have the Model S and a Nissan Leaf. Hopefully the Model X will be ready when the Nissan lease expires at the end of 2014. We didn't need to update our electrical service because it already had 400A service to handle our air conditioning needs. I had dual NEMA 14-50 outlets installed so we will be ready for the Model X. The 2012 Nissan can only handle a 20 Amp circuit (3300W max), which I will leave as a backup 240V circuit in case I have a problem with one of the 14-50 outlets.

I have a model S and the wife is getting a smart fortwo next month. We have a 14-50 outlet for the model S and will use 110 volt outlet for the smart fortwo.

We are an all EV family, with a ModS and a Nissan Leaf. ModS charges on the NEMA 14-50, Leaf charges on the 120V trickle charger that comes with the car as we seldom drive it more than 40 miles per day, and an overnight trickle charge is all we need.

I have an S and a Roadster. The Roadster is not my daily driver, so I leave it plugged in to a standard outlet.

We've had a Chevy Volt for the last year and a half, and we have a Model S about 3 to 4 weeks from delivery. We will keep the Volt as our second car and probably put a lot fewer miles on it!

We got SolarCity to install 2 NEMA 14-50s (1 in each garage) as part of our upcoming PV solar install. We have 1 Model S and expect to get the 2nd in the not too distant future.

We have 2 S's and have had 2 HPWC's installed. 200A service to the garage on a separate meter from the house. Nice, since we only use the garage service to charge and run the garage we stay in the lower ranges of the fee schedule.

I have a volt, model s, and Honda odyssey... Hope to get a supercharger network going to replace the Honda with a model x. The volt is on a regular plug, the tesla on a nema 14-50.

We have a Leaf, S, and Zero DS electric motorcycle. The Model S gets the level 2 Schneider charger we installed for the Leaf, the Leaf now gets a 110 V trickle charge (or the schneider if we back it in), and the motorcycle got banished to the back patio covered area as the S is wider than the car it replaced.

We may install a 14-50 and use it for the S in the future.

We have a LEAF and a MS. Clipper Creek CS-100 charger takes care of both

I have a Model S and the HPWC. If my other half's next car, or next-next car, is an EV, it'll probably (hopefully!) be a Tesla--one of the reasons we got the HPWC. In that case, given our different schedules, we'll charge one and then whoever's up later (these days the other half, but it used to always be me) would simply swap the cable when the first car's done charging. This solution wouldn't work for everyone, but it would for us if we eventually, probably, have two Teslas and remain on fairly different work/sleep schedules.

We have a 6-50 to charge our two Model S's, and a level 2 to charge our Volt or Model S. When our girls start driving in a few years, we will have more EV's around. We hate the ICE!

When my wife and I bought the Model S we though we need an ICE car. We now drive the Model S everywhere and have recently decided to ditch the ICE for a second Tesla. We will most likely wait for the Gen III or possibly a Model X.

My wife would like her own charger. We already have 125A sub-panel in the garage. So she will get her own charger.

Nissan Leaf and P85. Got the Leaf first because I was still waiting for my Model S.

Nema 14-50 for Model S and Nema 6-50 for GE Wattstation for Leaf. I have a gas dryer so I used the 240V30A breaker for an electric dryer. I also have a gas cooktop. so I used the 240V50A breaker for a electric cooktop. No upgrades necessary.

I will get the model X in 2014/2015. Definitely 3 GenIII's for my triplets. And most important, a refresh of the Tesla Roadster that will probably be awesome. My car buying decisions have already been made for the next decade. No point in any more car magazines or auto shows. It think I speak for a lot of people.

We have a 4-year-old Roadster and a 1-year-old Model S. Though we bought the HPWC, we haven't installed it yet. We use the Roadster charger for both cars. It isn't often we need to charge both in the same day, so this works well. If we do need to charge both at the same time, we have a 14-50 available for one of the cars. Work well and we won't be going back to the ICE age.

leaf already in the garage and waiting for our right hand drive model s arriving spring 2014 in england to make it a completely electric garage. (s will replace the current prius.)

@wildcatzoo - impressed. might join you with a zero motorcycle as well. could entice me back on 2 wheels - after an 8 year gap.

oops forgot to answer the second part: no upgrade to what we have currently at the house for our leaf. will look again when the model s arrives but we think that we will be ok with what we have. (we have 32 solar panels on the house so are happy with slow charging. it suits the way we live and work too.)

We have 2 Fiat 500es and 1 Model S. Solar Power added this month. We no longer have an ICE car. Works for us.

We've had a Volt for a year and a half and our Model S for three days. Probably replace the Volt with a Model E. No more ICE for us!

Vanity plate suggestion: NOPTTPTT

We have two model S and two long commutes (50-70miles), but got by fine with one 14-50 outlet and some opportunistic on the go charging for 5 months. For 3 months of home renovation, we have used a temporary two 14-50 outlet setup at night. The construction crew uses them during the day.

The future is one HPWC for quick charge convenience (its been in a box for months waiting for the renovation), and a 14-50 outlet in the garage, as well as, an additional 14-50 outside to cover contingencies, e.g. more EVs, visiting EVs, garage access temporarily blocked. I think of it as convenient overkill ;) These will all be on a separate 200amp EV panel.

I have had my Model S for 9 months and the wife was going to wait for the Model E. After finally driving my car, she could wait no longer. She just ordered her Model S today! We hope to share one 14-50.

It's mostly the electrical bill that you should be worried about.
If you're driving 60 miles per day, that's about 30kWh.
If you're up to 120 miles a day, that's 60kWh.
At 60kWh a day and 34c per kWh (PG&E tier 3 rate) you're looking at ~$600 a month bill, and that doesn't cover whatever else you're consuming for non-driving needs.
Having solar changes the equation dramatically in your favor, provided you either produce enough to cover all of it or at least enough to keep you in tier1.

You really need solar if you are charging @ home (...at least for us under the thumb of PG&E).

1 S and one to be delivered in a few weeks. We will trade in our last ICE and hope to never have to own one again. Currently one 14-50 but will see how the charging scheduling goes before we consider adding another one.

We'll add an X to the existing S when available and I spent a good deal of time thinking about how I would charge both overnight given regular 100 mile days on each car. I settled on a hpwc for one charging station (80amp breaker off of a 200 amp main panel) and a 6-50 for the other station. The plan is to use a PLC (programmable logic controller) and contactors to take the single 80 amp feed from the main and control which station gets electrified when; e.g., 6-50 is hot from midnight to 3:00am and then the hpwc is hot from 3:00am to midnight allowing day charging on the hpwc as needed. With that as the design, i researched plc's but it started to get a bit complicated for me as a diy project (no knowledge of programming plc's) and the urgency wasn't there. Will most likely pick this up again next year. Anyone out there want to help select plc components, contactors, and write some community code ;)


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