Comment by amluto
4 hours ago
There’s a genuine technical issue: the AC EVSE protocols (J1772, NACS, etc) have several safety features that are far in excess of anything you’ll find in a regular 15A NEMA receptacle. I don’t think it would be wise to gave high traffic NEMA receptacles on fully weather-exposed streetlights.
The hardware for the safety systems would not be expensive in volume, but the cable and connector are expensive and bulky. And none of the EVSE standards are specified in a variant where the receptacle is fixed and the car carries the cable.
This is solvable, obviously. I don’t know whether drivers would want to deal with having their own cables, though.
Having your own cable for AC (here it's Type 2) is the norm in Europe, so I'd say it's survivable.
AIUI, Tesla really screwed the pooch here. For the original Model S, Tesla really really wanted the US model to tuck the charge socket under the little hinged reflector, and they couldn’t figure out how to fit the Type 2 “Mennekes” connector their. So they invented their own socket (which evolved into NACS), and the Tesla one is rather inferior to Type 2, at least when used for AC charging.
And now every EV needs to have a different charge port configuration for North America vs Europe, and North America is stuck with NACS. (NACS is fine for DC but still sucks for AC. It cannot support 3-phase charging (which I admit has always seemed like a silly feature except in the limited case of 1 or 2 chargers in a single family residence), and cables and adapters cannot passively report their current rating. So you would need to build a kind of gnarly active MITM system to make a safe extension cable, whereas a Type 2 to Type 2 cable is built part of the Type 2 design.
Later, Tesla proved the whole thing pointless by successfully fitting Type 2 in the same location…
I think the timeline is a bit off. When Tesla designed its connector, Type 2 wasn’t yet the established European standard. Tesla had shown its proprietary connector by 2011 and shipped it in 2012; Type 2 wasn’t selected as Europe’s common connector until 2013.
When Tesla later engineered the European Model S, it needed three-phase AC and adopted a modified Type 2 connector, which fitted behind essentially the same tail light door.
But that’s all history now.
Arguably both markets ended up with good solutions for their needs: NACS is exceptionally compact and well suited to North American single-phase AC plus DC fast charging, while Type 2 is larger but supports Europe’s widespread three-phase AC.
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European Model S has Type 2 in that location, only ones that don't fit is the Type 2 CCS with giant DCFC pins below the regular Type 2. NACS is just Tesla doing Apple.
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> 3-phase charging (which I admit has always seemed like a silly feature
Well, 3phase is more efficient as you have less losses in the cabling.
May save you 5-10% on the bill.
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The point is that EVSE plugs are safer and European dryer plugs under the rain out in the open is technically kind of dangerous.
No, the cable you carry for AC charging has a Type 2 connector on both sides, it's purely an EV charging cable. It's not the same 3-phase plug you'd plug a table saw into.
I got it, we need a new USB-C connector (C for Car), that'd be something to see.