Even though the TT-30 outlet has the capability of handling a 30 amp RV circuit if you used an adapter to go from the TT-30 plug to a standard 110/120 outlet for the ID4 charger you would only be using 10-12 amps - level 1. I do know there is an adapter to go from a TT-30 to a 50 amp RV plug. But in reality the RV 50 amp plug is really two separate 110/120 circuits and not a 220/240 circuit. The difference is a 220/240 circuit comes off the two different sides of the power coming into your home. But the 50 amp RV comes of the same side of the circuit through separate 110/120 breakers. A level 2 EVSE would not work on a TT-30 outlet.

 

That makes sense, but it seems like there are some EV versions of the TT-30 to 14-50 adapters (TT-30P to NEMA 14-50R Adapter for EV Charging at Campgrounds – EVSE Adapters) that, rather than wiring it like you're describing for the standard 50A RV converter, instead they seem to operate a little differently (EV Charging on a TT-30 30-Amp RV Plug), so that a compatible Level 2 charger (and the EVSE adapters seems to imply that juicebox is one of them) could run it at 16 or 24a but still keep the current at 120v, and you'd still get double the normal level 1 charging speed. Depending, of course, on if the ID.4 will take more than normal level 1 (like the Teslas or Leaf), or if it caps it like the Bolt.

 

A standard 120 volt circuit will not handle safely more than about 20 amps. I know of no EVSE that runs on anything but a 220/240 circuit. And by the way 120 is the voltage not the current. Unless you could find a 220/240 outlet - like a dryer - at an RV park there is no way to have a level 2 EVSE.

 

One thing to keep in mind that some RV parks offer 50 Amp service (used for Motor Homes) that use a NEMA 14-50 and can deliver up to 12kw. Those will support a portable Level 2 EVSE.

 

I motor homed for many years and I never saw an RV park that had 14-50 plug ins. There were some 50 amp plug ins but they were not 14-50. But then I have not been in an RV park in 30 years and like everything else I am sure they have changed. I can imagine that some large, high dollar motorhomes having a 220/240 v. 14-50 connection.

 

I have an openEVSE that works with either 120v up to 16A or 240v via a TT-30 plug.

I haven't used it on my ID. I haven't been camping in a long time and was considering listing it for sale (I bought it for my eGolf a few years ago) but now I'm thinking I might go camping in the ID 4. I'll have to see if I can find a place to test the EVSE out.

 

Here is a video that shows different plugs you can use for road trips for a Tesla portable EVSE, however, I don't see why it could not be used for a portable j1772 charger.

 

Just thought I'd note that I also reached out to VW to ask them about charging on a TT-30 past normal L1 speeds when I first posted this question. They recently got back to me and said they had to do some consulting with their engineers about the question in the meantime, and their official advice is not to try it. In the meantime, on a camping trip, we unmounted our plug-in Juicebox 40 from the wall and brought it along (a little unwieldy), camped at a site with a 14-50 RV outlet in an region with no DCFC coverage, and it was about as seamless as could be.

 

their official advice is not to try it.

What are they talking about? It's not experimental...

 

The ID.4 onboard charger is capable of accepting up to 11000 watts of power (11kW). Wether or not your EVSE / circuit is capable of delivering that is another matter.

The supplied EVSE from VW can only deliver about 1200 watts (120 volts x 10 amps). It will not draw more power than this even if you put a TT-30 adapter plug on it.

Your theoretical question of the TT-30, can deliver 120 volts at 30 amps, assuming that the breaker and supply to the plug was correctly rated then you can safely pull 24 amps (80%) continuously through the EVSE or 2880 watts. This is well within the ID.4 capabilities of 11000 watts.

If you are looking to travel with the ID.4 and use RV hook-ups, then I recommend you look at after market portable EVSE that support 120/240 through various plugs. I like the Mustart TravelMaster Gen 2, it auto selects voltage and current based on the interchangeable plugs, e.g. TT-30, 14-50, 5-15, 6-20, 10-30, 6-50, 10-50.

 

Hi, I have an ID.4 and I'm going to a site with Nema TT-30 outlets soon. Did you ever learn:
1. If the ID.4 can handle higher currents (up to 16A or 24A) at 120V?
2. If there is a decent EVSE + adaptor(TT-30P to 14-50R) solution that we can use to utilize the TT-30 fully?

 

Welcome to the forum. I have a goplug EVSE and it is adjustable from 10 to 15A at 120V and has adapters for most plugs:

Plug Adapter Bundle for Use With Electric Vehicle Charging Stations: NEMA 5-15, NEMA 10-30 and NEMA 14-30 to NEMA 14-50

Given their unique design, all GoPlug EV chargers will work with dryer outlets. They will even work with common 120 V wall outlets. If you would like to take advantage of that, this charging adapter bundle has you covered. It consists of three separate adapter cables: NEMA 5-15 (wall outlet)...

getgoplug.com

Goplug does not sell a TT-30 adapter but a quick search found this one:

RV 30Amp Male To 50Amp Female Camper Power Cord Plug Adapter Cable NEM

Journeyman-Pro Universal 110 volt 30amp to 50amp 3prong to 4prong Adaptors Easily connect your old three or four prong extension cord from your RV power station to your vehicle. Features: ✔ LONGER – 18 Inch adapter cord is Longer than others making it more adaptable to the variety of RV Power...

journeymanpro.com

Most campgrounds also have a 14-50 which will give much faster charging, and is the default plug on the goplug and many other EVSE.

 

I had this question today and it doesn't look like this was ever answered. Per a datapoint on Reddit, you can get 24A at 120V on a TT-30 if you have the appropriate EVSE:

 

More details on TT-30 wiring.