3 tons wrote:
‘I Had a Dream’:
Imagine a world full of EV’s (possibly due to a political mandate??)...
Imagine a world where most EV owners recharge their vehicles starting mostly in the evenings...
Now imagine a world of private residences fitted primarily with the ever ubiquitous 100amp electric service panel...
Now imagine a world full of private residences potentially in need of larger electrical service panels...
Now imagine (in addition to other household needs including HVAC) a neighborhood near full of EV’s recharging simultaneously each evening at about 60 amps per vehicle residence...
Now imagine a current electrical distribution utility grid incapable of meeting this sudden electrical demand, while residential solar panel systems are past operating at their peak harvest time and with the possibility of inclement weather, and the unpopularity of hydro electric dams...
Imagine the efficiencies and effectiveness of pollution controls technology on existing non natural gas fired (and other HC fueled) electrical generation power plants...
Imagine the loss of efficency (and parasitical pollution) via the conversion process when utilities convert from NG (or any other HC resource) electricity, which is later (with any luck...) converted again into usable EV power...
Imagine a world where a politically neutral scientific body evaluates then compares the ‘net amount’ of real world pollution (considering grid source) of an EV to almost any modern day gasoline or natural gas powered vehicle (crickets....).... BTW, Both emit CO2, (though EV’s are a bit more virtuous)...
Imagine our public policy makers making energy and transportation policy based on reality and empirical data rather than impulsively defaulting to a popularly guided consensus....
‘I Had a Dream’
3 tons
Good evening 3 tons.
A couple observations, many people who own an EV don't even bother buying a 240 volt charger. They just use the 12 amp 120 volt EVSE that plugs into a 15 amp circuit. They usually do this 2 or three times a week when they have a 30 KWH ish battery. Bigger batteries like the Bolt, New Leaf or the TESLA can take a few days this way if they are empty but standard commuting is again an overnight situation and usually a couple or three times per week. Those of us with 240 volt units can only charge at a maximum of 32 amps depending on the EV. (Our leaf is 27 amps) ...and again usually a couple or three times per week. Tesla HPWC's can utilize a 50 amp circuit, but again, most with bigger batteries only charge once or twice a week. If you are doing a big road trip than you use superchargers or fast chargers. Every household plugging in two vehicles every night at 60 amps each is not a realistic sceenario.
If you want realistic scenarios of what it is like to live with an EV in real world situations, please feel free to ask us. I am certainly not an expert in any of this but I am happy to share my experiences which are probably typical of most EV owners.
Here is a picture of our two EVSE's. The one on the left is a 120 volt 12 amp unit and the one on the right is a 240 volt unit. It could theoretically pull 40 amps but with our car (and many others) it only pulls 27 amps, usually for about three hours, and usually about 3 times per week. If you look closely it is actually plugged into an RV 14-50 receptacle. We don't use the 120 very much since we got the 240 volt unit but if we don't want to run a cable under the garage door it still works fine. Just takes 6 times as long. :)
