That's understandable. As you probably know, neutral is connected to ground back at the main panel. The problem with connecting neutral to ground at the outlet is when you have something plugged into the outlet, neutral is used as part of the circuit. That means that the neutral wire is no longer at ground potential, it has some voltage on it. If the appliance has connected the ground pin to the chassis of the appliance (which is normal), someone touching it could get a shock from the voltage potential.
Well, wait a minute. Let's clear this up. Sure, you won't find standard UL compliant ones for that, because they can't convert between a 240V outlet type to a 120V outlet type. But for EV charging, this would work fine, and the neutral isn't an issue because you wire it differently.
Yes, there are a few good ones. Two that I know of and have used are www.allstays.com and www.rvparky.com They have maps, and let you filter by amenities that are included. For electrical, that will say "30 amp" or "50 amp". And yes, those do mean TT-30 and 14-50, but RV park places generally won't know that those are the actual names of the outlets.
Well, yes, IF some user has decided to create an entry for that particular one. Plugshare is a user maintained map. There are a lot of campgrounds and RV park sites that have never been added to Plugshare but are listed on the camping website maps.
I'm mostly following, you can convert to 120v from a 14-30 because there are two hots and a neutral, you can just choose one hot. I know that EVSEs can't detect amps, if they could this would all be much easier, but they can detect voltage? Presumably I don't quite follow this because of my crude understanding of electricity. I note that EVSEadapters.com has cool adapters for TMC Gen 1 that have no neutral and so fit 14-30, 14-50 and 14-60.
As for PlugShare, it doesn't show campgrounds mostly. At least not on the route I use as an example. (I've driven between Atlanta, GA and Mobile, AL hundreds of times so that's my test route). I'd assumed they were not listed by choice. There may be more to it than that.
Well, no, not that way. You wouldn't choose only one hot--you use both of them. You are thinking trying to extract only a 120V source (by only using one hot wire) from that 14-30 outlet to make it an exactly the same 120V output that a TT-30 should "normally" be. That's not what I'm talking about. You don't have to keep the voltage the same as what a TT-30 would normally be. For EV charging, you could interchange between 240 or 120V either way, and the cars will use it just fine.
Well, no, that's just remaking the same 14-30 Tesla plug.
That's the general idea. The EVSE and the car can detect whether they've got 120v (hot- neutral) or 240v (hot-hot) and don't care which they get. When you make an adapter for say, TT-30 to 6-30, you hook up the hot and neutral to the two hots, and ground still goes to ground. You're right that making these oddly wired adapters can be a bit of a hazard, which is why I usually suggest people go with the ones from EVSEAdapters that can only plug into the Tesla mobile connector. That way there isn't any way to misuse them.I'm mostly following, you can convert to 120v from a 14-30 because there are two hots and a neutral, you can just choose one hot. I know that EVSEs can't detect amps, if they could this would all be much easier, but they can detect voltage? Presumably I don't quite follow this because of my crude understanding of electricity. I note that EVSEadapters.com has cool adapters for TMC Gen 1 that have no neutral and so fit 14-30, 14-50 and 14-60.
Example:
You're suggesting they could make a 6-30 to TT-30 adapter if they wanted, it's just that it would only be suitable for EV use, or EVSE use like the link above. Which is kinda dangerous. No matter how good your warning labels are.
Don't feel any pressure to keep explaining things to me, though it might be worth it as reference for others later.
As for PlugShare, it doesn't show campgrounds mostly. At least not on the route I use as an example. (I've driven between Atlanta, GA and Mobile, AL hundreds of times so that's my test route). I'd assumed they were not listed by choice. There may be more to it than that.
Don't buy that one. RV adapters are not wired correctly for EV use. There are ones that are marketed for EV use, but again, I'd go with EVSEAdapters one.RVer here. I'd just get the 14-50 Tesla Mobile Adapter for the mobile charger and then a 14-50 to TT-30 dog bone adapter Power Grip Adapter, 30A Male to 50A Female . I think you have to self police though and make sure you set your max amps accordingly within the car before you start your charge. IE 30a pedestal = 24a max, 50a pedestal = 32a max.
Anecdotal evidence but all RV pads that have electrical will have the 30a 120v service. Only a few have 50a, mainly for the longer motorhomes that have 2 AC units. Some pads will also have both 30a and 50a which would be nice so you don't have to play musical chairs with your RV and EV.
RV places seem to be cracking down though on EV charging and will say out right no or we'll charge extra for it
I'm surprised at this too. Seems like TT-30 should be the 3rd pigtail after 5-15 and 14-50.
Yes, they are long overdue to offer that.
Yes, here's why those dogbone adapters from camping supply places can't work. It is related to what I was describing above, where for electric car charging, you can do sleight of hand with swapping between 240V and 120V on the same pair of wires, and it's OK. But in normal world, like RVs, you can't do that.
I’m not 100% sure I understand your question, but answering the question I think you’re asking:
