holstein13 wrote:
westernrvparkowner wrote:
Wow, I did a bit of research and some basic math and found out that the 50 AMP charger for a Tesla draws 40 amps at 240 volts (10 kw). Or to put it another way, 80 percent of the maximum available power at a 50 amp pedestal. Furthermore, a complete charge at that rate would take up to 7 hours. NEC allows 7 50 Amp pedestals per 200 amp service loop. 5 Teslas charging on that loop would take 100 percent of the available power for that entire loop, leaving the 7 RVs completely without power.
A complete charge for a Tesla would cost us around $7.00 (10 cents per kwh). It is our experience that a fully electric coach costs us around $5.00 per day in electrical costs, so the Tesla is nearly a 50 percent greater energy hog than a 45 foot Prevost (provided the Tesla only needed one charge that day. It is entirely possible that with it's 250 mile range a person could run it dry in the morning after charging all night and need another full recharge that same day). No way electric cars can share the current electrical grids in RV parks.
I'm really glad you are doing the research but your numbers make no sense at all. If you have 7 50 Amp pedestals and 5 of them have a Tesla charging on them, that leaves you only 2 spots left.
Where would you even plug in the 7 RVs if the pedestals are already taken? What is the likelyhood of you having 5 Teslas charging at maximum draw at the same time? This makes no sense. So the Tesla uses an extra $2.00 in electricity. How much do you charge for one of your sites? How much water does the Tesla use (probably close to zero). How much sewage does it produce (again, close to zero)? If you are completely honest with yourself, you'll see that a Tesla renting one individual spot and taking one outlet only is good business for you and for the environment and for your customers.
Note, I'm not suggesting the Tesla share a spot with the camper. I'm suggesting you rent out the Tesla spot and camper spot separately.
Those Teslas will draw maximum power for 7 to 8 hours, and since most everyone would be charging them overnight, they would be drawing that power at the same time. People with electric cars aren't going to pay for two sites, one for their RV and one for their car, they are going to want to charge their cars at their sites and it is not feasible in parks that have constructed their electrical grids to current NEC specs.
Now if someone wants to rent a site for their electric car and then rent an RV site for their RV, fine. But I would peg the number of electric car owners that are going to pay well over $100.00 a night for two RV sites at just about Zero.
