Peri sez >your system serves only 100 cars per day (maybe a few more if people shuffle around at noon)<
I won't bore you with all the EVSE I requested put in at several hp sites, those were a long time ago, ancient history mixture of L1 and 14-50's, and have since been yanked out as most of those sites hp sold off. Instead I use the former Sun Microsystems site in Menlo Park, CA http://jacobsschool.ucsd.edu/events/2012/facebook/images/facebook_parking.jpg (map of bldg numbers, pre-Facebook site revamp) http://www.zdnet.com/i/story/62/77/002995/facebook_east_campus_menlo_park_big.png [sidebar - history: A lot has changed since FB took over that site, it is no longer the quiet pleasant high-tech site Sun made it into: https://www.quora.com/What-changes-is-Facebook-making-to-the-former-Sun-Microsystems-campus-in-Menlo-Park Instead, it now has very tight (paranoiac) security, yet a favorite of the public to get a snap of their FB sign out front of the main entrance (when you drive by, you most likely will see people taking a photo-op in front of the FB sign) https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTIwnjWgXKNREv57vLPd8HCDfQXlGpyE8xrmuj5nfgUU64Vqebj http://www.businessinsider.com/why-suns-logo-is-on-the-back-of-facebooks-sign-2014-12 But on the back of that FB sign is the last original Sun sign. FB CEO had it flipped around and the then back painted over to use it as FB's sign front (presevering Sun failure/folding) http://v6.designforfun.com/display.php?id=142 to remind FB employees to 'keep working' (sort of like employee motivation via regular 1k Volt shocks - its very different at FB, lots of motivation slogans, etc.). / sidebar] With a boat-load of cash flow, that FB site has a whole lot of employee EVSE. If you bring up plugshare with that site's address, plugshare won't show any public EVSE (FB got plugshare to not display/show FB's employee EVSE. I used to show on plugshare before, but now it doesn't). But if you are smart (like me) there is a way to still find all the EVSE (I and others) have documented on plugshare: https://www.google.com/search?q=plugshare.com+facebook+menlo Facebook - Building 12 | Menlo Park, CA api.plugshare.com/view/location/12691 Facebook - Building 15 | Menlo Park, CA api.plugshare.com/view/location/56279 Facebook - Building 14 | Menlo Park, CA api.plugshare.com/view/location/12481 Facebook HQ | Menlo Park, CA api.plugshare.com/view/location/6273 Many of the images shown are now old as FB has yanked the Blink EVSE for Chargepoint, and even some of their older CT2100 Chargepoint EVSE were replaced by newer CT4000 Chargepoint EVSE (FB has lots of cash, so repeatedly spending money on EVSE like this is no problem for FB). So, at bldg18 all the Blink shown are now chargepoint https://13dd3533ebd96a38e097-ffd458871468d7801be60d93d5d79b26.ssl.cf2.rackcdn.com/45930.jpg but notice that image is old as today, the EVs are no longer all Leaf EVs, but a wide mixture of EV brands. Employees come to work, plugin, and then relocate at lunch time to make the EV spot available for some other plugin. There is a 50kW CHAdeMO L3 EVSE at bldg 12, but most of the EVSE at that FB is L2-6kW chargepoint. Their L2 is scattered around from a couple in front of bldg 10 (hq), bldgs 12 & 18, to several in the bldg 15 parking lot. https://13dd3533ebd96a38e097-ffd458871468d7801be60d93d5d79b26.ssl.cf2.rackcdn.com/15297.jpg Bldg 15's EVSE particularly impressed me, as it seemed to be the last EVSE installations FB put in at that site. The facilties person utilitized 6 of the existing cement pad squares in the parking lot (between the parked cars) to install in each: two dual L2-6kW coupler CT4000 Chargepoint EVSE, along with putting one duplex 5-20 outlet at the bottom of each CT4000. https://www.chargepoint.com/img/branded/fb_menlopark2.jpg Each of the duplex' two L1 outlets were on their own 120VAC 20A circuit. So, each pad had 4 L2-6kW and 4 L1 charging. That may seem like over kill, but FB did this EVSE installation in a big way. https://www.chargepoint.com/img/branded/fb_menlopark3.jpg So, there is an example of EV spot parking that can charge at either L2-6kW or L1 (wow!). If you look at the two last images, you will see the plugins are either EVs that can only L2 charge at 3kW or pih that can only charge at 3kW. When I had visited the site a long while ago (before being chased out by FB security), there were some Tesla, and Focus EVs plugged into L2, but most in that long EV charging row of beaucoup EVSE were only pulling 3kW at most. About 20% were charging off L1 using their portable EVSE. I would also like to use that work site as an example of how L3 can be implemented. FB originally installed 1 Blink 50+kW L3 EVSE that had two couplers (but only one at a time can be used/powered), with a long row of Blink L2-6kW farther down: https://13dd3533ebd96a38e097-ffd458871468d7801be60d93d5d79b26.ssl.cf2.rackcdn.com/6677.jpg The Blink L3 is still there, but the Blink L2 have been replaced by CT4000. Comments on the (above) plugshare listings mention that the employee's with Tesla EVs are hogging the Blink L3 (via a Tesla to CHAdeMO adapter). To me because FB is doing EVSE in a big way, I am guessing that FB will likely upgrade those nearby chargepoint L2 they just put in, to L3 EVSE (they have the money they can do what they want). Since FB has for the most part mostly migrated over to Chargepoint, they likely will start installing ChargePoint Express CPE200 dual coupler L3 EVSE that can charge either CHAdeMO or ccs https://www.chargepoint.com/products/commercial/cpe200/ IMO I would rather see twice as many 25kW L3 installed with a mix of CHAdeMO and ccs. Using a 50+kW L3 EVSE: -A 100mi EV will L3 charge in .5hr -A 200mi EV will L3 charge in 1hr -A Tesla might take as long as 1.5+hr. The 25kW L3 equipment hardware, and utility installation cost would be lower when compared to a 50+kW L3 EVSE. More employees would feel plugged in before starting their day. And FB could keep the 50+kW Blink around for those in a big hurry. Using a 25kW L3 EVSE, the charge times are doubled: -1hr, 2hr, 3hr. This is fine for employees to not have to wait around for the L3 to finish. They can go to a meeting and come back to move the EV to finish the charge off L2/1 elsewhere. While it is most likely FB would also offer a valet service for this, for those companies where the employees have to leave their desk to do this, the slower, less expensive 25kW L3 might time better for their productivity (plug it in, come back in a few hours, and move, rather than waiting around). 25kW ccs L3 on a chargepoint network https://www.chargepoint.com/products/commercial/cpe100/ 25kW CHAdeMO L3 on a chargepoint network is *not currently available So, my above 25kW L3 chargepoint network method would have to wait until it is. 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