Most single family homes in America have 240V electricity available for EV charging, but oddly enough most of our workplaces, hotels, schools, churches, and even larger multi-tenant buildings don't have 240V available and that's exactly why the SAE J3400 charging standard (NACS) supports 277V charging. By supporting 277V in addition to 240V (and 208V), the new charge connector will allow faster charging at work and it'll make those workplace EV "chargers" less expensive and faster to install. It's a high voltage win-win-win with just one tiny problem: Nobody but Tesla supports it at this time. Join me as I dive into J3400 and say why I think 277V charging is more important than DC fast charging.
Note: If you want to go deeper down the rabbit hole, 120/240V split phase AC is 120V RMS (root mean square), not peak. The peak voltage is actually 170/340V, but for reasons that I'll let you google, we use the RMS value colloquially and act like that's actually the peak. An earlier cut of this video took a deep drive down that long road but our editing staff fell asleep so we decided to leave that on the cutting room floor.
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