EV Chat General discussion about electrified Lexus, other EV vehicle manufacturers and BEV, PHEV related industry news.

EV charging in the US is broken — can it be fixed?

Thread Tools
 
Search this Thread
 
Old 05-16-21 | 07:29 AM
  #76  
Och's Avatar
Och
Lexus Champion
iTrader: (3)
 
Joined: Feb 2003
Posts: 16,436
Likes: 14
From: NY
Default

Originally Posted by bitkahuna
thanks for the great info. obviously i thought a dryer outlet and nema connector were the same, but guess not. so what i don't get is how can different connectors deliver different charge speeds when i presume they're all 220v and obviously all delivering power coming from the house supply?
I'm not an expert electrician, but I believe in the US the maximum allowed breakers are 15amp for 120V and 30amp for 240V for standard outlets. For 120V appliances the maximum power draw is limited to 1500w, and around 6000w for 240v appliances. Once you have equipment that draws more power, you must run appropriate wire to the electrical panel, use appropriate breaker, and appropriate connectors. Quick search shows Tesla wall connectors vary from 50 to 90amps, so you do need to run it directly you your electrical panel. The cost may vary depending on how difficult and how far you have to run the wiring, and if you have to change the electrical panel, but it shouldn't be too bad. Very important to hire a reputable electrician to do it properly. Another issue is most older homes only have 100amp total service, and upgrading can be somewhat expensive and more important time consuming.

Last edited by Och; 05-16-21 at 07:34 AM.
Old 05-16-21 | 08:18 AM
  #77  
EZZ's Avatar
EZZ
Lexus Test Driver
 
Joined: Jan 2007
Posts: 7,460
Likes: 228
From: CA
Default

What Och says is correct. Also the Nema 14-50 is the newer dryer plug and has a 50 Amp rating. I should have been more specific. The older dryer plugs that a lot of homes have is the Nema 14-30 with a 30 Amp rating. I have the 14-30 as my dryer plug.
Old 05-16-21 | 11:01 AM
  #78  
bitkahuna's Avatar
bitkahuna
Lexus Fanatic
iTrader: (20)
 
Joined: Feb 2001
Posts: 75,631
Likes: 2,588
From: Present
Default

Thanks guys. I finally looked this up (helpful).
https://en.m.wikipedia.org/wiki/NEMA_connector#NEMA_14

my home isn't that old (15yrs) but i think it has 14-30 as well.

(Side note: one thing i find bizarre about america is power seems interchangebly described as 110V or 220V AND 120V or 240V. So which is it?)

so about tesla's charger connection: 90A at 240v is 21,600W - a HUGE draw.

I think my home is a 200A panel, so that tesla connector would use almost half my available power. I also have 3 air conditioners, a well pump (draws a LOT of power when it runs obviously not continuously though), pool pump, etc. i'd be concerned about stressing/over-using my electrical supply!


Old 05-16-21 | 11:15 AM
  #79  
EZZ's Avatar
EZZ
Lexus Test Driver
 
Joined: Jan 2007
Posts: 7,460
Likes: 228
From: CA
Default

Originally Posted by bitkahuna
Thanks guys. I finally looked this up (helpful).
https://en.m.wikipedia.org/wiki/NEMA_connector#NEMA_14

my home isn't that old (15yrs) but i think it has 14-30 as well.

(Side note: one thing i find bizarre about america is power seems interchangebly described as 110V or 220V AND 120V or 240V. So which is it?)

so about tesla's charger connection: 90A at 240v is 21,600W - a HUGE draw.

I think my home is a 200A panel, so that tesla connector would use almost half my available power. I also have 3 air conditioners, a well pump (draws a LOT of power when it runs obviously not continuously though), pool pump, etc. i'd be concerned about stressing/over-using my electrical supply!

You can set the Amps. Most have it around 50Amps as the car can only accept that amount in the AC unit. So 44 miles per hour is it's max. The older Model S could accept more but not many people wanted that option so they stopped offering it.
Old 05-16-21 | 11:25 AM
  #80  
Hameed's Avatar
Hameed
EV ftw!!!
 
Joined: Nov 2002
Posts: 8,602
Likes: 332
From: Lake Ontario
Default

Originally Posted by bitkahuna
Thanks guys. I finally looked this up (helpful).
https://en.m.wikipedia.org/wiki/NEMA_connector#NEMA_14

my home isn't that old (15yrs) but i think it has 14-30 as well.

(Side note: one thing i find bizarre about america is power seems interchangebly described as 110V or 220V AND 120V or 240V. So which is it?)

so about tesla's charger connection: 90A at 240v is 21,600W - a HUGE draw.

I think my home is a 200A panel, so that tesla connector would use almost half my available power. I also have 3 air conditioners, a well pump (draws a LOT of power when it runs obviously not continuously though), pool pump, etc. i'd be concerned about stressing/over-using my electrical supply!
The latest generation wall connector from Tesla is the gen 3 model and it's specs are below
  • Up to 44 miles of range per hour of charge
  • Compatible with Model S, Model 3, Model X and Model Y
  • Up to 11.5 kW / 48 amp output
  • Customizable power levels on a range of circuit breakers
  • Compatible with any home electrical system
  • Wi-Fi connectivity (2.4 GHz 802.11 b/g/n)
  • Approved for indoor and outdoor installation
  • Lightweight 18’ cable length
  • Tempered white glass faceplate
Old 05-16-21 | 11:27 AM
  #81  
bitkahuna's Avatar
bitkahuna
Lexus Fanatic
iTrader: (20)
 
Joined: Feb 2001
Posts: 75,631
Likes: 2,588
From: Present
Default

Originally Posted by EZZ
You can set the Amps. Most have it around 50Amps as the car can only accept that amount in the AC unit. So 44 miles per hour is it's max. The older Model S could accept more but not many people wanted that option so they stopped offering it.
thanks! I realize 44 miles per hour recharging is considered 'good' but thinking about that... i fill my cars (about 350mi range) in 5 minutes so that's 4200 miles per hour fueling.

Old 05-16-21 | 11:27 AM
  #82  
Toys4RJill's Avatar
Toys4RJill
Lexus Fanatic
 
Joined: Nov 2011
Posts: 31,752
Likes: 73
From: ON/NY
Default

Originally Posted by Hameed
The latest generation wall connector from Tesla is the gen 3 model and it's specs are below
What is the difference between a 1st, 2nd or 3rd gen wall charger from Tesla?
Old 05-16-21 | 01:50 PM
  #83  
bitkahuna's Avatar
bitkahuna
Lexus Fanatic
iTrader: (20)
 
Joined: Feb 2001
Posts: 75,631
Likes: 2,588
From: Present
Default

Originally Posted by Hameed
The latest generation wall connector from Tesla is the gen 3 model and it's specs are below
  • Up to 44 miles of range per hour of charge
  • Compatible with Model S, Model 3, Model X and Model Y
  • Up to 11.5 kW / 48 amp output
  • Customizable power levels on a range of circuit breakers
  • Compatible with any home electrical system
  • Wi-Fi connectivity (2.4 GHz 802.11 b/g/n)
  • Approved for indoor and outdoor installation
  • Lightweight 18’ cable length
  • Tempered white glass faceplate
Cost?

Originally Posted by LexsCTJill
What is the difference between a 1st, 2nd or 3rd gen wall charger from Tesla?
The latest ones make fart sounds and you can play games on them.
Old 05-16-21 | 02:04 PM
  #84  
Och's Avatar
Och
Lexus Champion
iTrader: (3)
 
Joined: Feb 2003
Posts: 16,436
Likes: 14
From: NY
Default

Originally Posted by bitkahuna
Thanks guys. I finally looked this up (helpful).
https://en.m.wikipedia.org/wiki/NEMA_connector#NEMA_14

my home isn't that old (15yrs) but i think it has 14-30 as well.

(Side note: one thing i find bizarre about america is power seems interchangebly described as 110V or 220V AND 120V or 240V. So which is it?)

so about tesla's charger connection: 90A at 240v is 21,600W - a HUGE draw.

I think my home is a 200A panel, so that tesla connector would use almost half my available power. I also have 3 air conditioners, a well pump (draws a LOT of power when it runs obviously not continuously though), pool pump, etc. i'd be concerned about stressing/over-using my electrical supply!
Dont worry about the 110 vs 120 and 220 vs 240, its the same thing. In the US we get two phases of ~120v for 240v between them. Also just because you have a 200 amp panel doesnt mean you have 200 amp service coming to your home.

In my shop I have a bunch of equipment that requires a third phase, and getting the third phase was expensive and took a long time between permits and construction.
Old 05-16-21 | 02:06 PM
  #85  
Och's Avatar
Och
Lexus Champion
iTrader: (3)
 
Joined: Feb 2003
Posts: 16,436
Likes: 14
From: NY
Default

Originally Posted by Hameed
The latest generation wall connector from Tesla is the gen 3 model and it's specs are below
  • Up to 44 miles of range per hour of charge
  • Compatible with Model S, Model 3, Model X and Model Y
  • Up to 11.5 kW / 48 amp output
  • Customizable power levels on a range of circuit breakers
  • Compatible with any home electrical system
  • Wi-Fi connectivity (2.4 GHz 802.11 b/g/n)
  • Approved for indoor and outdoor installation
  • Lightweight 18’ cable length
  • Tempered white glass faceplate
48 amp means 60 amp breaker, equipment is limited to draw maximum of 80% capacity.
Old 05-16-21 | 02:27 PM
  #86  
EZZ's Avatar
EZZ
Lexus Test Driver
 
Joined: Jan 2007
Posts: 7,460
Likes: 228
From: CA
Default

Originally Posted by bitkahuna
thanks! I realize 44 miles per hour recharging is considered 'good' but thinking about that... i fill my cars (about 350mi range) in 5 minutes so that's 4200 miles per hour fueling.
True and not everyone wants an EV. Those who don't care about long distance road trips find EVs to be great daily drivers or enthusiast vehicles. If I road tripped my Model 3 it would be a good experience but not as convenient as my minivan which has a 500 mile range. For short trips with 1 charging stop before returning home, I prefer the Tesla as it's a better driving car. Of course my kids vastly prefer the minivan so it is what it is and my Tesla stays home.
Old 05-16-21 | 08:32 PM
  #87  
FatherTo1's Avatar
FatherTo1
Racer
 
Joined: Apr 2016
Posts: 1,846
Likes: 115
From: Sacramento, CA
Default

Originally Posted by EZZ
True and not everyone wants an EV. Those who don't care about long distance road trips find EVs to be great daily drivers or enthusiast vehicles. If I road tripped my Model 3 it would be a good experience but not as convenient as my minivan which has a 500 mile range. For short trips with 1 charging stop before returning home, I prefer the Tesla as it's a better driving car. Of course my kids vastly prefer the minivan so it is what it is and my Tesla stays home.
That reminds me of the 2007 Sienna XLE we used to have. Maybe the newer ones are more plush but for all the talk of “designed for max people and cargo”, I found the Sienna pretty uncomfortable on long trips. The sliding doors and space were great but the seats were not good for long trips, and I’ve sat in both driver’s seat and second row captain’s chair. My wife used to complain and needed a break every 1-1.5 hrs on a simple trip to the Bay Area. I didn’t truly understand until I sat in the second row myself.

I know the 2011+ Siennas have recliners and foot rests as an option, but I still question how comfortable the actual seats are for a long haul. I haven’t been curious enough to head to a dealership to find out.

Old 05-16-21 | 11:20 PM
  #88  
Och's Avatar
Och
Lexus Champion
iTrader: (3)
 
Joined: Feb 2003
Posts: 16,436
Likes: 14
From: NY
Default

Originally Posted by FatherTo1
That reminds me of the 2007 Sienna XLE we used to have. Maybe the newer ones are more plush but for all the talk of “designed for max people and cargo”, I found the Sienna pretty uncomfortable on long trips. The sliding doors and space were great but the seats were not good for long trips, and I’ve sat in both driver’s seat and second row captain’s chair. My wife used to complain and needed a break every 1-1.5 hrs on a simple trip to the Bay Area. I didn’t truly understand until I sat in the second row myself.

I know the 2011+ Siennas have recliners and foot rests as an option, but I still question how comfortable the actual seats are for a long haul. I haven’t been curious enough to head to a dealership to find out.
I find that sedans tend to have the most comfortable rear seats. While SUVs are minivans are more spacious, they have seats that are designed to fold flat, and sometimes even to accommodate the third row, and thus they are too upright and too flat. Rear seats in premium sedans are body contoured, and positioned for maximum comfort.
Old 05-16-21 | 11:26 PM
  #89  
Och's Avatar
Och
Lexus Champion
iTrader: (3)
 
Joined: Feb 2003
Posts: 16,436
Likes: 14
From: NY
Default

Originally Posted by bitkahuna
Thanks guys. I finally looked this up (helpful).
https://en.m.wikipedia.org/wiki/NEMA_connector#NEMA_14

my home isn't that old (15yrs) but i think it has 14-30 as well.

(Side note: one thing i find bizarre about america is power seems interchangebly described as 110V or 220V AND 120V or 240V. So which is it?)

so about tesla's charger connection: 90A at 240v is 21,600W - a HUGE draw.

I think my home is a 200A panel, so that tesla connector would use almost half my available power. I also have 3 air conditioners, a well pump (draws a LOT of power when it runs obviously not continuously though), pool pump, etc. i'd be concerned about stressing/over-using my electrical supply!
This guy does an excellent explanation of US electrical system in this video.

Old 05-17-21 | 10:31 PM
  #90  
FatherTo1's Avatar
FatherTo1
Racer
 
Joined: Apr 2016
Posts: 1,846
Likes: 115
From: Sacramento, CA
Default

Well, I guess this is one way to offset those EV government subsidies, although it disproportionately punishes EV owners. Basing infrastructure taxes on the actual miles you drive makes more sense, but then how do you account for cross-country trips. They would have to put a toll on every road. I am not sure what the proper solution is.

https://www.yahoo.com/autos/texans-m...215900819.html



All times are GMT -7. The time now is 03:38 AM.