Best 19.2kW / 80A EVSE?

[daveo4EV]

as initially I had it wired with one 100a breaker in the Hope to load share but the software for The gen 3 wasn’t out yet so I had my electrical guy change it out and split it with 2 50A breakers. So I think the max I can do is 40a each. (80%). Am I thinking of this incorrectly?

that is true if you do NOT network the two Gen3 Wall charger together (1 leaders + upto 5 followers)

your Taycan's maximum L2 charge rate is 48 amps (60 amp breaker)
your wife's Model Y maximum L2 charge rate is 48 amps (60 amp breaker)

48 amp charge rate is 20% faster than 40 amps (8/40 = .20 or 20%)

but if…

• you upgrade the breaker to each Gen3 to 60 amps (along with the wire gauge to each Gen3 EVSE to handle 60/48 amps) - consult your electrician
  • minimum wire gauge for 50/40 amp charging circuit is 10 gauge, 8 gauge is better/preferred, 6 gauge is ideal/overkill for 50/40 amps
  • 4 gauge wire is recommended for 60 branch circuit - if you have 4 gauge wire already you simply need to swap the breaker - this is easy/peasy
  • if you have to pull new wire it may not be worth it…
    • but if it's a short and easy run - pulling new wire may not be a big deal.
• configure each Gen3 wall charger to "know" they have a 60 amp breaker (max charge rate for Gen3)
• network/pair/connect them to each other using configuration tool <--- this step is critical - if they don't know they are networked to each other then they each think they have 60 amps (or 120 amps total) - * - see foot note
• now you have a "network/pool" of 2 Gen3 chargers each capable of 60 amps maximum
• as part of the "network" you tell them you are sharing a 100 amp total capacity - this then make them part of a "pool" of chargers - they communicate wirelessly with each other while charging and keep the entire pool of charger under the overall max budget of 100/80 amp - but any single charger can do a maximum of 60/48 amps if there is AMP budget in the pool.

now you can charge two EV's at once - and the two Gen3 wall chargers will dynamically split/share/distribute load to each EV as "needed" upto a 60 amp maximum (48 amp charge rate)

if one vehicle is charging it will get "the full beans" - 60/48 amps of charging
if two vehicles are charging each vehicle will get what it needs…up to a shared combined maximum of 100/80 amps…the two Gen3 chargers will co-operate with each other to intelligently split the charging AMP load as needed but stay under the 100/80 amp overall budget.

the Gen3 wall chargers are actually super awesome - you can have up to 16 6 Gen3 charger each with 60 amp maximum - but sharing an overall "pool" of amps - so the collection of Gen3 chargers will all co-operate with each other based on actual demand to not exceed the maximum amps allocated to the pool of chargers - so you can have like 4 chargers all wirelessly connected to each other - sharing 150 amp overall capacity, but each charger limited to 40/32 amps each (as an example) - so any single charger can do up to 40/32 amps - but collectively they will never exceed the 150 amp total budget (again as an example).

here are the details from Tesla

https://www.tesla.com/support/gen-3-wall-connector-power-sharing

so from picture below

• upgrade the breaker/wire-gauge for each Gen3 wall charger to 60 amps
• connect to one of the Gen3 wall chargers via wifi
  • update to the latest firmware
• designate this 1st wall charger the "leader"
• set it's maximum charge rate to 60 amp breaker (48 amp charge rate)
• goto your 2nd wall charger - connect to it's wifi
  • update firmware if necessary
• join the 2nd wall charger to the "leader" as a follower
• set the maximum power Sharing settings to 100 amps
• set Powersharing "enabled"

this will give you two separate 60/48 amp chargers - but manage a pool of 100 amps total while charging two vehicles - and a full 60/48 amps if you're only charging one EV

this works great for example if one EV needs 40% capacity charge and the other only need 15%

if they both start charging at the same time (11 pm) they will both share the load of 100/80 amps while charging at the same time (40 amps each) - but when one finishes and drops it's load - the remaining EV will then ramp up to a full 48 amps to finish it's overall charging session faster now that the 1st EV is done…

* - foot note: if you have wire gauge rated for 100 amps to the subpanel - it's probably also rated for 125 amps - consult you're electrician but you can probably just swap the 100 amp breaker for a 125 amp breaker - and then you could just run the two chargers at the full 60/48 amps each since your main breaker is now 125 amps - the issue then would be is the wire for each Gen3 charger rated for 60 amp circuit

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[buhhy]

After lots of hemming and hawing, I went ahead and bought a NOS Tesla Gen 2 charger off fleabay. $650 seems like a steal compared to any of the other options, as long as it works ?. I already have the 80A Teslatap mini so I'll just use that until I decide whether I want to change out the plug from the Tesla one to a J1772.

 

[ErikMason]

Being ugly is a pretty big downside though...

It may be ugly but it's accessible, the front of the enclosure opens up and fleets and school districts can easily connect to whichever fleet management systems to want or have. You will not find a more reliable charging station. And also, the CS-100 is an original, a classic, you won't be able to get these with the ClipperCreek logo for long.

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