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New UMC?

orangem

Member
Feb 28, 2013
139
31
Toronto
Today a new UMC arrived from fedex unexpectedly. It says something about a pilot program in Ontario. Any idea on what's going on?
 

DMC-Orangeville

85D and John Deere 5100E
Feb 14, 2015
942
1,174
Orangeville ON Canada
Today a new UMC arrived from fedex unexpectedly. It says something about a pilot program in Ontario. Any idea on what's going on?

May have something to do with CEC requirements limiting it to 32 amps. See this quote/feed: Southern Ontario Tesla Owner's Club - Page 25

When I bought my HPWC at the Tranmere Service Center a month or so ago, I mentioned that I was debating whether just to get a second UMC to leave at home. I decided on the HPWC because it was only $100 more and because I'd already had several UMCs replaced under warranty, so I was skeptical about their longevity. At that time, they told me that I couldn't have bought a UMC even if I wanted because they were no longer offered for sale in Canada. I asked why, but didn't get an answer. I wondered at the time if some re-design was in the works. This might be my answer.
 

wayner

Active Member
Oct 29, 2014
3,859
1,461
Toronto
Mine arrived yesterday and I was also wondering why. I don't know when or if I have used this cable - what is it used for?
 

orangem

Member
Feb 28, 2013
139
31
Toronto
Will try to post a photo of the note attached. It is not a 32A connector. It still charges in full 40A glory. I do notice the button on the handle is no longer a separate piece.
 

orangem

Member
Feb 28, 2013
139
31
Toronto
Document-2015_10_10_10_47_44 Page 1 Sat Oct 10 2015 ScanSnap Manager iX500 W.jpg
here's the doc.
 

orangem

Member
Feb 28, 2013
139
31
Toronto
Interesting. My new UMC charges at 40A. And the new UMC rating is rated at 40A with new ULC label on it. Though I am using a 6-50 adapter and that may have something to do with the Amps.

- - - Updated - - -

read answer in the other thread :)
 

green1

Active Member
Mar 25, 2014
4,548
1,494
Calgary, Alberta, Canada
Guess those old 14-50 adapters are now going to be worth their weight in gold...

Unfortunately I highly doubt I'll get the old one, it's a shame to be limited to even slower charging than you have to. Why 32 amps anyway? I thought it was supposed to be 80%, that's 40A on a 50A outlet, 32 is way down at 64%!!!!
 

wayner

Active Member
Oct 29, 2014
3,859
1,461
Toronto
You're kidding, right? You're an owner and have over 1000 posts and don't know what the UMC is used for?
Not kidding. I charge st home with my HPWC, at SCs and occasionally in parking garages where I have used one of the adapters supplied with my MS. But I don't think I have ever used the cable(s) in my trunk.
 

mknox

Well-Known Member
Aug 7, 2012
10,103
1,894
Toronto, ON
For clarity, are you guys talking about getting a whole new UMC or just the NEMA 14-50 adapter plug? I received a new NEMA 14-50 adapter at least a year ago with instructions to return the old one (I never did).
 

ZsoZso

cat at play-time
Supporting Member
Apr 24, 2014
1,857
11,760
Mount-island
For clarity, are you guys talking about getting a whole new UMC or just the NEMA 14-50 adapter plug? I received a new NEMA 14-50 adapter at least a year ago with instructions to return the old one (I never did).

I got a whole new UMC plus a new NEMA 14-50 adapter. Supposed to send back the old version of both.
The new adapter with new UMC limits charging to 32A, while the new UMC with the old adapter still charges with 40A.
 

mknox

Well-Known Member
Aug 7, 2012
10,103
1,894
Toronto, ON
I got a whole new UMC plus a new NEMA 14-50 adapter. Supposed to send back the old version of both.
The new adapter with new UMC limits charging to 32A, while the new UMC with the old adapter still charges with 40A.

Thanks for clarifying. I wonder if this is being rolled out to all owners?
 

TEG

Teslafanatic
Aug 20, 2006
21,914
9,065
I got a whole new UMC plus a new NEMA 14-50 adapter. Supposed to send back the old version of both.
The new adapter with new UMC limits charging to 32A, while the new UMC with the old adapter still charges with 40A.

Umm, me thinks they may not like you using the old adapter with the new UMC.
 

mknox

Well-Known Member
Aug 7, 2012
10,103
1,894
Toronto, ON
I got a whole new UMC plus a new NEMA 14-50 adapter. Supposed to send back the old version of both.
The new adapter with new UMC limits charging to 32A, while the new UMC with the old adapter still charges with 40A.

Have you tried the reverse? i.e. the new adapter on the old UMC? If so, does it limit it to 32 amps? Just wondering if the "intelligence" is in the UMC or the adapter. If the adapter, I wonder why they would be sending out whole new UMC sets?
 

green1

Active Member
Mar 25, 2014
4,548
1,494
Calgary, Alberta, Canada
Have you tried the reverse? i.e. the new adapter on the old UMC? If so, does it limit it to 32 amps? Just wondering if the "intelligence" is in the UMC or the adapter. If the adapter, I wonder why they would be sending out whole new UMC sets?
Best guess, based on the fact they're now derating the energy use to 64% instead of the usual 80%, is that they discovered that the UMC wasn't really capable of safely maintaining 40 amps long term. I suspect they made a safety change to the UMC, and also sent a new adapter that lowers the amperage to 32A
So I bet the new adapter is what sets the rate, but that the new UMC is more reliable. It's also possible that the 32A setting didn't exist in the old UMC, so the new adapter may not be enough to set an old UMC to 32A, it may get confused.
 

Canuck

Well-Known Member
Nov 30, 2013
6,125
5,777
South Surrey, BC
Guess those old 14-50 adapters are now going to be worth their weight in gold...

I doubt it. I order stuff from Tesla online and have it shipped to my PO Box in the States because the shipping price to Canada is insane. So all you need to do it order one from the US site and have it shipped to the States so they give you the American version of 40 amps, and make sure your specify TESLA PN: 1014324-00-E (US)

Tesla Accessories and Charging Adapters NEMA 14-50

Someone just needs to tell us if the old adapter on the new UMC still gives 40 amps?
 

wayner

Active Member
Oct 29, 2014
3,859
1,461
Toronto
So to answer my own question - this appears to be the cable and connectors that you use to attach to your regular household 120V and 240V plug. I have used this cable exactly once in my 9 months of Tesla ownership - when I was worried that I might not make it home and charged at 120V, 12A for a few hours in the dead of winter.
 

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