Quote:
Originally Posted by GreenZLE
Electric cars wont rival gas powered cars until charging can be done as fast as filling up a gas vehicle. A 2 port fast charger is over 60KW. Your home with a 200a circuit breaker for 240v has 48K of available power. The current at home charger takes several hours to charge a car. Consider that every home with 2 electric cars will need at least a 400a service if we stay with 240v to even come close to making home charging EV's as convenient as gas powered cars or we'll need multi port charging stations capable of charging in 15 minutes or preferably less. Either way, the electrical grid and transmission equipment needs a major overhaul AND the power supply needs to increase greatly. Just look up how many cars are in california and calculate how much power charging them will require. Its surprising. More like shocking.
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EV #1 starts charging at midnight, finishes at 2 am. EV #2 starts charging at 3 am, finishes at 5 am. Load at the home successfully managed. You are charging over 240V at 48A at the highest( max AC charging with Tesla at least) which is 11 kwh. You can also reduce the amps if you need to share the load. But even if you have two EV's charging at the same time at midnight, using 96A still leaves plenty of headroom on 200A service. Will you be using 104A while you be sleeping? Also DC Fast Chargers are over 150Kw with Tesla rolling out 250Kw fast chargers and will be upping them to 325kw soon.
When the car charges overnight at home while you sleep, does it really matter it takes 2 hours?
Need to have a different mindset of how you would operate an EV over an ICE vehicle and even your phone/iPad/laptop. I already described it back on page 2....
Most of the time you will be charging the car between midnight to 6 am when at home, not at peak hours. You also don't charge to 100% and let it drain down to 10% lets say before plugging back in. For me, I keep my Model 3 at 65% SoC. My commute will have me getting home with 45-47% SoC. I plug it in, have the car scheduled to start charging at 11 PM( off peak for me) and takes about 1.5 hours to charge back to 65%.