Reisender wrote:



True. But then again, the Tesla compensates for voltage drop and ramps down charging. An RV doesn’t.

Reisender wrote:



True. But then again, the Tesla compensates for voltage drop and ramps down charging. An RV doesn’t.

valhalla360 wrote:



True but a 30amp RV rarely pulls more than 50% of the 30 amps except for a second or so on start up of the air/con compressor. EVs max out the pedestals for extended periods of time. Proper wiring in campgrounds assumes not every aircon is running simultaneously (I believe they derate by 70% when accounting for this)...and many campgrounds are still pushed to the limit on hot summer weekends. A stray EV likely won't make much difference but dozens of them certainly can depending on the size of the park and condition of the electrical system.

Also, if the car is smart enough to dial back the amps, you now have 12amps at 106v (or something)...it's going to take 3 days to fill an 80kwh battery bank that is near empty.

valhalla360 wrote:

Do you explain to the staff how much extra power you are using and what it is costing the park? Particularly for government parks, they may have no idea and effectively its driving up the cost for your neighbors.

If it's one in a thousand sites, your neighbors will never notice but when it hits significant numbers they will bear most of the cost as the park recoups power costs .

CA Traveler wrote:

Reisender, Thanks for all of your detained information.

Reisender wrote:



Do I explain? No. But EV’s are common here. Many times the park staff are driving them too so I’m sure they know what’s involved. And keep in mind that on 30 amp sites which is mostly what we rent it’s either the EV or RV not both so consumption isn’t that much higher. Probably 30 or 40 kWh over a few days. There are occasionally up charges although we have never been charged additional fees on a 30 amp site. That’s just luck of the draw though as I know some do. In quebec we stayed in a park that had signs indicating EV/RV combos had to rent 50 amp sites but there were none available the 5 nights we were there so he just told us to make sure we only plugged in one thing at a time. He didn’t charge us anything extra. We charged the first night and then topped up the day before we left.

We are seeing more and more parks put in a couple or even four centralized. 8 kw EVSE’s for charging and they just indicate that any EV charging must be done using those EVSE’s (Charge stations) and not on the sites. Some are stand alone and complimentary and some are networked usually thru FLO and typically charge a dollar or two an hour based on speed. On our last trip there were two new FLO units at the shower house which was maybe 4 or 5 sites from our site. I think it was 2 bucks an hour. We got set up on our site and I drove over and plugged in. It was all charged up by bed time.

valhalla360 wrote:



If they provide dedicated EV charging stations, that's a different ballgame as the owner/manager has made a conscious decision to provide the service. If they spent thousands of dollars installing EV charging stations, I can buy the argument, they should inform themselves.

But in normal usage: Presuming the staff has any clue is wildly optimistic. If they are staff vehicles, they likely never see the bill. If you highlight the amount of power you are consuming and a rough estimate of the cost...a much better chance it gets back to the owner/manager who then can make an informed decision rather than just flying under the radar.

As far power consumption on a 30amp being similar...on a hot day, we are pulling around 12-14amps when the air/con is running and it typically cycles dropping to 3-4amps when the air/con is off. You indicated your telsa is set to pull 24amps as a baseline and presumably does that until the batteries are full:
- Let's say RV is 16hr at 14amps + 10hr at 4amps ~ 31kwh
- EV is 24hr at 24amp ~ 69kwh
- On a cold day (no air/con), RV only is ~ 11kwh and the resulting cost differential is much higher.

That's an extra 38kwh (best case scenario) and won't fill the car if you are coming in empty and splitting off some of that power for RV use (even more if you use the 15amp for the RV while the EV is plugged into the 30amp as you showed in one of your pictures). Works out to around $10 extra at $0.25/kwh. If you have a 200site park and 25% are doing this, that's an extra $500/day in electrical consumption.