Happiness is having the right adapter.
The Tesla UMC (portable EVSE) has a lovely high-current low-insertion force connector adapter that presently has replaceable sockets for a conventional 120v 5-15 plug and a 14-50 plug. They used to have adapters for other 240v plug variants, but no longer offer them. Separately, they also provide a J1772 adapter for their inlet connector (which, unfortunately, does not work with the Mitsu EVSE).
I consciously bought my used Tesla MS with the optional second 40A charger, allowing me to input 240vac at 80A if it was available. The Tesla's ac charging input current is on-screen programmable, from 80A all the way down to 5A. The beauty of this is I that I can scale down the current to match both the circuit and my departure time, as I still prefer to draw a lower-than-maximum current to go easy on both the wiring and the battery pack.
As an i-MiEV-related aside, the current programmability and its very elegant implementation is one of the features I really like about the EVSEUpgrade.com of Mitsubishi's i-MiEV EVSE. Disclaimer: I have no financial interest in this company, but both of my i-MiEV's have these modified EVSEs.
Well, the first two days of our trip allowed me to exercise not just my Tesla's 80A input capabilities, but my adapter collection as well.
In the Turbocord thread I had written:"For years I had standardized all my EV extensions using locking NEMA L6-30 connectors with a zillion adapters for that 30A connector, but now I have the Tesla UMC which can comfortably draw 40A out of a 50A circuit (and even 80A if I hardwire the HPWC), thus obsoleting my collection... "
Hit the road on Tuesday in the Tesla, heading for Nova Scotia…
On Tuesday night stayed with friends in Reno, Nevada. He's a very skilled woodworker and his garage was wired with a 240vac NEMA 6-20 straight-in outlet for his wood lathe. My adapters consisted of:
6-20P —> L6-30R
L6-30P —> 14-50R
14-50P —> Tesla UMC
Comfortably charged overnight dialing down the current to 12A and having a little over 70% by the time we departed - plenty to get to the Lovelock supercharger 100 miles away - could have charged more and gone directly to Winnemucca Supercharger (170 miles), but we like to stop and walk around and see the local sights and stretch our legs as we are, after all, tourists. Then, on to Winnemucca on the way to Boise, Idaho.
After charging in Winnemucca, Nevada, we headed for McDermitt on the Nevada-Oregon border where the casino has an 80A J1772 Clipper Creek EVSE, on the way to Boise - I discovered that I had made a "minor" math error as somehow I thought that McDermitt —> Boise was 140 miles but instead it was 183 miles
, and I had consciously stopped charging early at the Supercharger in Winnemucca. Not to worry, the coffee shop in the casino was nice for our now-extended lunch and we needed to catch up on emails as well as walk around a bit, and I really appreciated having bought my used Tesla with an 80A charger which sucked in a steady 73A at 206v from that Clipper Creek J1772 EVSE. My wife convinced me to let Tesia
charge a bit more, as I was all set to take off when the car predicted 10%SoC at the destination, and we waited until that number was 18%. Good thing we did, as during this drive the predicted end charge dropped to as low as 7%, I think because the car's battery cooling system was working overtime in the heat while driving through all that horrible smoke from all the forest fires. Would have really liked to have had a new Tesla's Bio-Weapon Defense Mode air filtration system! Anyway, arrived at my friend's house with 17%SoC, simply by slowing down a bit and following this nice big truck for a while.
At my friend's house here in Boise last night I plugged into his modern 240vac NEMA 14-30 dryer outlet using -
14-30P —> L6-30R
L6-30P —> 14-50R
14-50P —> Tesla UMC
Dialed down the current again to 12A for the overnight charge to 60%, which will be plenty for today, but I'll take her up a bit before leaving tomorrow for the Twin Falls Supercharger 134 miles away.
Sorry for the long-winded writeup, as I had only intended to talk about charging adapters…9/8/17 Edit: clarified adapters provided with Tesla's UMC.