4 ms·
> To meet Tesla’s claim of 400 miles in 30 minutes for a semi carrying 80,000 pounds would require its new Megachargers to achieve output of more than 1200 kW
by watchdogtimer 9y ago
> To meet Tesla’s claim of 400 miles in 30 minutes for a semi carrying 80,000 pounds would require its new Megachargers to achieve output of more than 1200 kW
1200 kw is a lot of power. That's the average amount of power used by 600 homes, or half of the output of a large wind turbine here in the Midwest, to charge a single truck.
If they use a 440 V supply to charge it, that'd be over 2700 amps.
- vvanders 9y agoEh, there's 20 120kW stalls in the Centralia Supercharger so while it's a lot I don't think it's crazy-talk.
- Animats 9y agoThat requires a really big plug. Like this one, 400 amps at 440VAC, three phase.[1] There's a standard plug for plugging large ships into shore power. Truck stops are going to need high tension lines coming in. [1] http://www.cooperindustries.com/content/public/en/wiring_devices/interconnect/products/subsea/shore_power_cables_mil_c_24368.html http://www.cooperindustries.com/content/public/en/wiring_dev...
- ChuckMcM 9y agoI wonder if they might do some sort of powerwall setup where they install a battery bank at the truck stop that can supply the power, it gets charged off the grid constantly, periodically trucks come in and suck big chunks of power out of it.
- foota 9y agoSounds like their existing chargers are already 480V. [https://en.wikipedia.org/wiki/Tesla_Supercharger https://en.wikipedia.org/wiki/Tesla_Supercharger]
- dboreham 9y agoI might have been skeptical too but I recently saw a _ship_ charged while docked for about 50min in Norway. Big plugs, two circuits and I think 600V. I took a picture that I could dig out for the curious.
- blhack 9y agoWow I would love to see that! Am I reading this right? A electric ship?
- erik_seaberg 9y agoWorking on a ship without power is like working in a basement during a blackout. Either you hook up to shorepower or you keep your genset running and everyone else near the dock has to deal with the smoke and noise.
- gamblor956 9y agoNo, a normal ship. To minimize pollution, most ports now require cargo ships to run their electrical systems off of harbor power while docked (instead of using the ship's own diesel generators).
- sandstrom 9y agoThis one is in the works: https://qz.com/980207/a-self-driving-electric-ship-will-replace-thousands-of-truck-trips-at-yara-a-norwegian-fertilizer-firm/ https://qz.com/980207/a-self-driving-electric-ship-will-repl...