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In the final stages of convincing the DW that a Tesla 90D is a reasonable purchase. :smile:
My question, in calculating additional costs, how many of you have installed the Wall Connector at home versus a 240V outlet?
I am going to guess: DW = DEAR WIFE....240 14-50 works fine for me. What does DW mean? Should I ask?
But other things are not equal. Charging at such low amperage is much less efficient. You're wasting electricity.FWIW, I find that I actually reduce the amperage I draw at home because I always have overnight, and want to allow for about 110 miles driving with 30% reserve so I charge to 70-75% generally. I find I can get that with a 5 amp charge and 12 hours, if I expect less I increase to 10 amp. Other things being equal, keeping the charge going for longer decreases stress on the 12v and eliminates phantom drop.
The wall connector is far more elegant and I like keeping the portable cable in the car not having to worry about wrapping it up and tucking it away.
The difference in price and cost of installation isn't all that much different and remember you can deduct the cost of equipment and installation on your Federal Income Taxes (Or so it has been said here on the forum. I have yet to do mine yet but we'll see.) I had my wall connector installed with 80/100 service just in case I wanted to add the second charger to the car which I doubt that I'll do but its there and that cost is negligible. Just be sure to set the dip switches to 40 amps if you go that route.
It seems many, if not most, people are confused about this. There is no inherent difference in efficiency between 120v or 240v. There is enormous difference depending on how the electric is sourced and transmitted. As everyone knows the hight the voltage the lower the amperage required for a given load. However, properly wired, there is no measurable difference based on the amperage drawn. The exception is that higher amperage creates higher residence and is thus less efficient than is lower amperage. One major reason for higher voltage is to reduce amperage, thus decrease transmission losses.But other things are not equal. Charging at such low amperage is much less efficient. You're wasting electricity.
It seems many, if not most, people are confused about this. There is no inherent difference in efficiency between 120v or 240v.