EV Charging station & RV use

time2roll wrote:
Yes 70,000 per year is a lot of miles. More than most.

Agreed. That is a lot of miles. But it shows that in some cases limited charging facilities could be a problem for some. We seem to be around the 16000 km per year between two vehicles. Both are Electric vehicles. More than half our charging is level one in the driveway and the rest is level 2 in the garage. We occasionally fast charge on Road trips and we do use destination charging at restaurants, malls, hotels (overnight).

I haven’t checked lately but the BC hydro website used to indicate that if every personal vehicle was to overnight become electric, the total grid load would increase by 19 percent. Presently the surplus is over 30 percent so not a problem for BC.

Yes 70,000 per year is a lot of miles. More than most.

time2roll wrote:

JaxDad wrote:
16 amps gives me a maximum of 13 kilometres (7.8 miles) per hour of charge, in 12 hours that would be just 150 km (94 miles). That’s a best case scenario. If I had to depend on that nightly I’d be walking to work if I had to do any additional driving during the day (I often do an extra 100 km 60 miles during the day) or went out during the evening.

A 10% per year conversion rate? So you think they’re going to upgrade the grid every year? Hmmmmmm, I suspect not.

Yes and you don't need to start out at 100% each day.

Even if you drive 150 miles and replenish 90 you can get through a few days just fine. I did this with my LEAF the first seven months on L1 as not much charging equipment was even available at a reasonable price. I was good for 50 miles per day average and many days I did not fully charge by the time I left for work. Might be a fun exercise to set your timer to give you 90 miles per day and see how it goes for a couple weeks.

Range anxiety may have morphed into charging anxiety...

For some that might work, but it definitely wouldn’t work for me.

I often do 200 - 300 miles a day.

I have a theoretical range of 295 miles, in reality, it’s more like 250 miles.

JaxDad wrote:
A 10% per year conversion rate? So you think they’re going to upgrade the grid every year? Hmmmmmm, I suspect not.

Grid is updated every single day. Maybe not a major power plant or transmission wire however the utility will do just fine and has lots of time to get it done.

I understand if ALL personal vehicles went electric it would add 30% load to the grid. Reality is we would be lucky to see 50% penetration in 15 or 20 years.

JaxDad wrote:
16 amps gives me a maximum of 13 kilometres (7.8 miles) per hour of charge, in 12 hours that would be just 150 km (94 miles). That’s a best case scenario. If I had to depend on that nightly I’d be walking to work if I had to do any additional driving during the day (I often do an extra 100 km 60 miles during the day) or went out during the evening.

A 10% per year conversion rate? So you think they’re going to upgrade the grid every year? Hmmmmmm, I suspect not.

Yes and you don't need to start out at 100% each day.

Even if you drive 150 miles and replenish 90 you can get through a few days just fine. I did this with my LEAF the first seven months on L1 as not much charging equipment was even available at a reasonable price. I was good for 50 miles per day average and many days I did not fully charge by the time I left for work. Might be a fun exercise to set your timer to give you 90 miles per day and see how it goes for a couple weeks.

Range anxiety may have morphed into charging anxiety...

time2roll wrote:
Collectively the instant change is impossible. Convert 10% a year and all will adjust just fine. BTW a 20 amp circuit is needed for 16 amp max charging so there I just cut 20% off the required load.

No worse actually than coming home on that hot summer day and all 600,000 turn on their A/C at the same time. The utilities are actually eager to supply all the transportation energy.

16 amps gives me a maximum of 13 kilometres (7.8 miles) per hour of charge, in 12 hours that would be just 150 km (94 miles). That’s a best case scenario. If I had to depend on that nightly I’d be walking to work if I had to do any additional driving during the day (I often do an extra 100 km 60 miles during the day) or went out during the evening.

A 10% per year conversion rate? So you think they’re going to upgrade the grid every year? Hmmmmmm, I suspect not.

pianotuna wrote:
JaxDad,

When folks come home in cold weather the last thing they do is plug in the block heater. Since our society refused to adapt from 9 to 5 jobs--there is a tremendous load. But the grid seems to not fall over very often.

A typical block heater on a commuter-mobile is ~350 Watts.

My Tesla on a slower charge setting is 11.5 kW.

So 1 Tesla draws more than 32 block heaters.

As in the case of my business partner who lives in a condo with more than 500 suites in it, the underground never drops below freezing so I suspect there’s very few block heaters plugged in. If only half of them had an EV that charged at just 5 kW that would be a 2,500 kW load that the building, nor the lines running to it, were designed for.

IKEA has candles on sale this week BTW.

When public utilities are designed or revamped they must be by specification and by code and by federal law designed for worst case scenario. Rolling blackouts are the alternative.

Limit the fuel supply (1973 - 1974) and take a good hard look at what real history shows us.

It's going to take 50-70 nuclear plants to feed this effort. Meanwhile I'll be feeding a parota tree...

EV batteries range from about 25 to 100 kWh. All can be slow charged but most are about 7kW max charging at home. Max charge rate is determined by the lower rating of the car vs supply.

If you calculate everything at the max you will way overshoot the needed power.

Same as an RV campground cannot supply the entire string at the max simultaneously. Yet we normally get by just fine. Recently a huge discussion on that.

EVs get roughly about 4 miles to the kWh so a 40 mile drive is 10 kWh to charge.

We can talk about overloading the grid but utilities are actually looking forward to expanding the business. Demand has been about flat for the last decade.

What is the burden on a six-hour full-refill duration charge?