My understanding was that streetcars and trolleys ran off 600V DC.
Bolt EV DCFC at home
What would it cost to install DCFC at home?
Are there units suitable for home use? Which brands and models?
I currently have a 40 amp cable to the garage and a 200 amp breaker box,
Do I need three phase power? Digging up the street would be pretty expensive and the HOA would probably not permit overhead lines. Or, is the standard residential distribution line three phase and they just give different legs to different houses?
Or, is the whole ideas unfeasible?
Are there units suitable for home use? Which brands and models?
I currently have a 40 amp cable to the garage and a 200 amp breaker box,
Do I need three phase power? Digging up the street would be pretty expensive and the HOA would probably not permit overhead lines. Or, is the standard residential distribution line three phase and they just give different legs to different houses?
Or, is the whole ideas unfeasible?
1 - 2 of 43 Posts
Yes, interesting indeed. Until now I had always thought that the main reason for DC interties were to eliminate the necessity of synchronizing the interconnected grids.Interesting stuff. I never realized the transmission losses of HVDC were less than AC. Though it seems like it only makes sense at very long distances because the AC/DC conversion equipment is expensive. Grounding the conversion stations also sounds very involved.
But as CCIE says, you need long runs to achieve the benefits - that might work for trunk transmission lines but as soon as you hit a city with its transformer switchyards and distribution runs, the conversion losses far outweigh the transmission losses. And it's those "last mile" costs that are the highest for the utilities. So even before you consider the tremendous resilience of the very highly entrenched AC standard, it sure looks like a non-starter to me.
1 - 2 of 43 Posts
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