2023 R1T - Charging Question

[Michael Kelly]

I'm in a condo & have access to a 277V/200A panel with plenty of spares. Being that I have charged on Level III high voltage, wondering if any of you know if I can pull legs & use it directly or if it needs to have a transformer in the mix? I know they make 1,000 transformers that I can install before the meter but just not sure, & my electrician is checking but not sure either. Does the vehicle determine that answer, so some other factor?

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[BigSkies]

You need and can install a Level 2 charger. There's plenty of options on the market, and plenty of threads on the topic worth searching. 50A circuits seem to be most common, but you can go up or down depending on panel capacity.

You're not doing anything with DCFC on a residential setup.

 

[WhidbeyIsland]

I'm not an electrician, however I believe if that is indeed a 277v panel, it is most likely being feed from a 480v 3 phase panel upstream and is intended for commercial lighting or industrial uses.

You will need a 277v -> 240v transformer and then a new breaker panel before you can install the level 2 charger.

 

[beatle]

There's an old forum post about 277v AC charging. In short, the truck's onboard rectifier (charger) can't accept 277v, so you'll need a stepdown transformer to get you to 240v first, then install a 240v receptacle or hardwired EVSE.

Teslas support 277v charging though, at least they used to. The Tesla wall connector used to have documentation that showed it working with 277v, but not anymore. Even if it worked, at best the truck wouldn't accept it, and at worst you'd risk damaging the onboard charger.

 

[Michael Kelly]

Good intel guys, that's what I thought. Bring 277 to the parking space, step down to 240 & off we go

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