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Supercharger - San Francisco, CA - Geary Blvd. (under construction Mar 2021, 34 stalls)

Mrbrock

Member
Mar 26, 2020
696
384
Napa, CA
Sorry if this is an obvious - [though I couldn't find much of an answer on Google fwiw !] - at a site with both L2 & L3 Superchargers, how do you tell the difference when selecting which Supercharger - [ie particularly when planning a shopping visit and happy to have a slower charge rate] any photos showing the physical differences please? Many thanks !
This site will have L2 (50A 240V or 9.6kw AC) like the foreground of the above picture, L3 Urban Supercharger (480V 150A or 72kw DC) like the background of the above picture and L3 V3 Supercharger (480V 480V 520A or 250kw DC) like in the picture above that one.
 

SFEV2020

Member
Feb 10, 2020
28
13
San Francisco
By L2 do you mean AC charging? If so, it should be obvious. The L2 would be on a small post. It'll look like your home charger mounted on a post. They are not superchargers and would typically charge much slower than a supercharger.

The L3 (DC chargers, Tesla calls superchargers) would be a pedestal substantially bigger.
They look like these:
View attachment 657775

If instead you are talking about V2 vs V3 superchargers, the difference is V2 has two pedestals per cabinet, so they are numbered in pairs (1A and 1B for example). V3 has four per cabinet. I just visited one last week and noticed they are numbered in 4s (1A, 1B, 1C, 1D for example).

There's also urban chargers which are slower (limited to 75kW from memory). They look like these (the ones in the background).
View attachment 657776
Thanks - yes my question is basically "If I was shopping at this site and was happy to have a slower charging rate so how would I know which was a V2 or V3?"
 

Mrbrock

Member
Mar 26, 2020
696
384
Napa, CA
There isn’t a true V2 at that site. V2 is capable of 150kw max shared across two stalls (if one is at 25kw the other can be at 125kw). The urban super chargers use the same base hardware of V2 but max out at 72kw per stall so the 150kw is essentially shared but you can’t ever go above 72kw. Unless you are at 10% soc or lower you wont see much difference between V2 and V3.

Are you confusing L2 and V2? If you pull into this garage to charge with 70% and plan to be there for an hour or two then you want L2. The HPWC that look like a home charger, not urban, V2 or V3 superchargers, those will all be too fast, 15-20 minutes to get you to 90% and idle fees if you stay there more than 5 minutes after you reach your limit. You will get about 10-15% per hour of charging on L2 depending on LR or SR(+). Although it looks like you have an X or S so you won’t see anywhere near the max rates.
 

mociaf9

Active Member
Oct 18, 2018
2,547
5,151
CA
There isn’t a true V2 at that site. V2 is capable of 150kw max shared across two stalls (if one is at 25kw the other can be at 125kw). The urban super chargers use the same base hardware of V2 but max out at 72kw per stall so the 150kw is essentially shared but you can’t ever go above 72kw. Unless you are at 10% soc or lower you wont see much difference between V2 and V3.
Urban superchargers are V2. They use the same supercharger hardware and architecture as the 150 kW units, just in a slightly different configuration that permanently shares the power, half and half, to the two stalls served. The charging posts are clearly different though.
 
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Big Earl

bnkwupt
Jul 12, 2017
5,215
9,412
Springfield, VA
There isn’t a true V2 at that site. V2 is capable of 150kw max shared across two stalls (if one is at 25kw the other can be at 125kw). The urban super chargers use the same base hardware of V2 but max out at 72kw per stall so the 150kw is essentially shared but you can’t ever go above 72kw. Unless you are at 10% soc or lower you wont see much difference between V2 and V3.
Power sharing on non-urban V2 sites happens in quarters. 36/72/108/144 kW. Previous to sometime in 2019 or 2020, V2 sites would give priority to the car that arrived first, with the second car getting the leftovers rounded up to the nearest 36. If you're curious about why 36, it's because the Superchargers are comprised of four groups of three 12 kW charging modules, each group has a module on each of the three phases. After sometime in 2019 or 2020, Tesla changed the way sharing works; power is immediately split in half to 72 kW for each car when a second car plugs into an A/B pair. When the first car dips below 36 kW, the second car gets an allocation of up to 108 kW. These are all nominal figures and can vary up or down depending on grid voltage and equipment condition.

V3 Superchargers handle power sharing completely differently and can save a considerable amount of time when a station is busy. V3s have 4 stalls per cabinet plus the cabinets can share power between themselves (up to 7 cabinets) on a common DC bus, plus solar and battery storage can be installed on that same DC bus to provide extra power when the transformer is maxed out (and/or charge the cars from renewables). This allows cars to part at any stall at the site and receive the maximum available power, compared to V2 which requires users to spread themselves out and avoid sharing A/B pairs.

AC (grid) input on each cabinet is only 350 kW and the utility transformer could range anywhere from 500 kVA (500 kW at 1:1 power factor) to 1,000 kVA for an 8 stall V3 site (leaving room for future expansion) depending on what the utility can support at any given location. With neither solar nor battery storage on an 8 stall site with 8 cars charging, a V3 site would be limited to about 87.5 kW per vehicle due to the AC input limitation of the charging cabinets.
 

kai7

Member
Feb 23, 2020
5
21
San Francisco
Looks like most wiring is all done, and all parking lines have been repainted. So most of the installation seems to be wrapping up, not sure what remaining steps are from PG&E standpoint.
E8EF7CBF-E433-46F4-BCAB-EAC86C5D5786.jpeg

2119898F-8B58-478D-9987-810E3A385F3E.jpeg
 

SFEV2020

Member
Feb 10, 2020
28
13
San Francisco
out of curiosity, is there any "definition" of what qualifies as 'Compact' ? e.g. would a Model X 'infringe' on that definition ??? if it doesn't why would they bother even painting that on these stalls
 

stopcrazypp

Well-Known Member
Dec 8, 2007
10,013
4,929
out of curiosity, is there any "definition" of what qualifies as 'Compact' ? e.g. would a Model X 'infringe' on that definition ??? if it doesn't why would they bother even painting that on these stalls
Even if Model X qualifies, there's still the Cybertruck, which is almost 3 feet longer.
 

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