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Old 09-12-2020, 08:43 AM   #1
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Charging Tesla at RV Park

I'm seriously thinking of buying a Tesla and towing it on a trailer as our next TOAD. I plan to buy a splitter cable so I can charge my Tesla and plug in my RV (50 Amps) simultaneously. I'm curious if anyone else is doing this and has had any issues with RV Parks discouraging or prohibiting this arrangement? Thanks.
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Old 09-12-2020, 08:46 AM   #2
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https://youtu.be/IPyFwH-hJbo

David Bott has great video on this...
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Old 09-12-2020, 08:49 AM   #3
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If I owned an RV park I would not allow that. Rv parks set their rates based on ordinary rates of electric usage. For someone to power their car from the RV park connection would result in far greater electric usage than ordinary which would not be fair to the RV park operator. Likewise, “splitting” the 50A connection could lead to overloading the park’s electrical system.
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Old 09-12-2020, 08:50 AM   #4
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Many RV parks will not allow it, there have been reports of damaged electrical. Some parks have dedicated charge stations separate from your site. Some charge extra. Anytime you alter or dogbone a RV parks electrical there is a chance for electrical damage to their infrastructure.
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Old 09-12-2020, 09:44 AM   #5
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50 amps is 50 amps, no matter how many times you split it. Your not going to overload the system, there is a 50 amp breaker to prevent that.

Now as far as the campground rules, that's another story.
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Old 09-12-2020, 10:28 AM   #6
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As twinboat says, 50 amps is 50 amps. running two roof airs and charging your Tesla is no different than running 4 roof airs and not charging a car.
But the campground owners will have the final say.
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Old 09-12-2020, 10:41 AM   #7
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From Tesla, you can't tow a Tesla behind your RV. You would need a trailer for the car. Pain. So, what's the point of this video? Go out and buy a Wrangler for half the price.
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Old 09-12-2020, 10:47 AM   #8
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Quote:
As twinboat says, 50 amps is 50 amps. running two roof airs and charging your Tesla is no different than running 4 roof airs and not charging a car.
Probably "yes" but maybe "no". A Tesla can charge at a half-rate off a 30-amp circuit and draws up to 24 amps.

If someone plugs their RV into the 50-amp outlet and then plugs their Tesla charger into the 30-amp outlet on the same pedestal there may be an overload problem. I can't imagine that each pedestal is wired for 100 amps of capacity when the normal usage is one or the other, especially at older campgrounds.

Anyway, if the campground charges for electricity (no pun intended) any additional cost is recouped.

I didn't watch any of the video except for the first minute or so. Did he tap in the car charger after the automatic transfer switch so he could charge the car from his generator if needed?

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Old 09-12-2020, 10:48 AM   #9
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Originally Posted by RWeigant View Post
From Tesla, you can't tow a Tesla behind your RV. You would need a trailer for the car. Pain. So, what's the point of this video? Go out and buy a Wrangler for half the price.
The OP noted he is thinking about pulling a Tesla on a trailer. Having a Tesla is only a disadvantage when moving between locations.

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Old 09-12-2020, 10:57 AM   #10
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Probably "yes" but maybe "no". A Tesla can charge at a half-rate off a 30-amp circuit and draws up to 24 amps.

If someone plugs their RV into the 50-amp outlet and then plugs their Tesla charger into the 30-amp outlet on the same pedestal there may be an overload problem. I can't imagine that each pedestal is wired for 100 amps of capacity when the normal usage is one or the other, especially at older campgrounds.

Anyway, if the campground charges for electricity (no pun intended) any additional cost is recouped.

I didn't watch any of the video except for the first minute or so. Did he tap in the car charger after the automatic transfer switch so he could charge the car from his generator if needed?

Ray
Although you can't imagine the pedestal being wired for 100 amps, its a good chance it is.
Most are wired for more then that and supply multiple pedestals.

No matter how they wire them, the breaker servicing that run, back at the supply, would be the proper amps to protect the wiring, and trip there.

If you plug in a bunch of stuff on the same breaker at home, that breaker will protect the wires. If you spread it out, and go overboard, the main will trip.

They don't build systems to burn up the wiring.
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Old 09-12-2020, 11:36 AM   #11
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Originally Posted by NXR View Post
Probably "yes" but maybe "no". A Tesla can charge at a half-rate off a 30-amp circuit and draws up to 24 amps.

If someone plugs their RV into the 50-amp outlet and then plugs their Tesla charger into the 30-amp outlet on the same pedestal there may be an overload problem. I can't imagine that each pedestal is wired for 100 amps of capacity when the normal usage is one or the other, especially at older campgrounds.

Anyway, if the campground charges for electricity (no pun intended) any additional cost is recouped.

I didn't watch any of the video except for the first minute or so. Did he tap in the car charger after the automatic transfer switch so he could charge the car from his generator if needed?

Ray
Tesla charging is completely adjustable, you can charge from a 120 volt 5 amps to 220 volt 48 amps depending on your setup. If you only drive around locally, chances are you will not need a high charge rate to refill your batteries. In a Model 3, 1 kw/hr will give you about 4 miles driving.
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Old 09-12-2020, 11:55 AM   #12
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Originally Posted by NXR View Post
ps.

...I can't imagine that each pedestal is wired for 100 amps of capacity when the normal usage is one or the other, especially at older campgrounds...
Ray

Doesnt a 50 amp outlet on the pedestal have two hot wires that are capable of 50 amps each, making 100 amps total?
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Old 09-12-2020, 01:56 PM   #13
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Doesnt a 50 amp outlet on the pedestal have two hot wires that are capable of 50 amps each, making 100 amps total?
Technically its 50 amps at 240 volts. You can split it out to 2, 50 amp, 120 volt legs using the neutral wire.
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Old 09-12-2020, 02:04 PM   #14
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50 amps is 50 amps, no matter how many times you split it. Your not going to overload the system, there is a 50 amp breaker to prevent that.
50 amps is 50 amps, but the total electrical usage in KWH depends on just what is plugged in and drawing current. RV parks set their prices to account for normally expected electrical usage in the motorhome. To add to that expected usage the power required to drive your car is to me, like takin two people to an all-you-can-eat buffet but paying for only one. The electric car driver is double dipping and using more power than expected.

Either the RV park eats the extra power expense, or if this became prevalent, then they would have to raise their rates to offset the extra cost. That would force all campers to chip in to pay for the power used by the electric cars. Either way, the electric car owner is driving his car at somebody else’s expense. That somebody else is getting shafted.
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