A bit over 10 years ago during what we now call the Mandate Era there were electric cars sold by some of the car companies, and there were EV charging stations installed at various places. Those cars were killed but the charging stations remained in place. Two of them were installed at the Fry's Electronics in Sunnyvale and have generally gone unused. I see from the EV Charger News Map that the charging station does get used but I've never seen a proper EV parked there any time I've gone to that Fry's. Things should change nowadays that electric cars are being sold, but the old charging stations are not compatible with the new charging standard. It means that using the old charging stations means either an adaptor box, or replacing the old charging stations with new ones. There's supposed to be a grant program underway to replace the old charging stations, but not all of them have been replaced yet. A further complication is that electric conversions such as my Karmann Ghia do not have the connectors for either old or new charging station standards.
That's a lot of prefix .. for .. demonstrating taking my Karmann Ghia to Fry's to try out the charging station there.
I bought an AVCON adaptor box from the EAA last year. It has a claw style AVCON inlet on one side of the box, and a NEMA 14-50 socket on the other side. The NEMA 14-50 is the 240v 50A outlet you might have seen at RV parks or any place needing large amounts of electricity (10kw max).
The charger in my Karmann Ghia is an Elcon PFC3000 and it came with a NEMA 6-20 plug on the end of the wire. I didn't know all these plug numbers until getting the charger and it was confusing when I unpacked the charger. The 6-20 plug looks enough like a regular 120v power plug that's what I thought it was, until I went to plug it into a socket and it wouldn't fit. A trip to Lowes and I got a bit of an education into sockets and plugs, and I found a website somewhere that has an excellent reference section on ALL the plugs and sockets in use in the U.S.A.
The 6-20 standard is for 240v up to 20A. I have no idea what it's normally used for. The charger will take either 120v or 240v power through the socket.
NEMA 6-20 is wholly different than NEMA 14-50. The 6-20 socket is three connectors (two hots and a ground) while the 14-50 is four (two hots, a ground and a neutral). In the EAA AVCON converter box they connected to the two hots and ground on the 14-50 leaving the neutral unconnected.
This means it was easy to build a converter cable with a NEMA 14-50 plug on one end (to plug into the AVCON converter), and a NEMA 6-20 socket at the other end (to let the charger plug into the converter cable). It may violate some kind of electrical code or something but I don't plan to let this get outside my car. Obviously taking 50A off the 14-50 to send through the 6-20 socket (rated for 20A) would be a bad idea.
Here's my car connected to the charging station. All the wiring is under the closed hood.
While hooking everything up a couple people stopped to chat with me about the car. That was nice.
Another view of the station & car
This is what it looks like under the hood. The converter box is on the left. In the lower right is a junction box. Dangling out the junction box is both NEMA 5-20 (120v) and NEMA 6-20 plugs so I can plug in to either. Because the BMS requires a separate 12v power supply that's provided by a little power brick plugged into the junction box. The charger is also plugged into the junction box.
I have an AC clamp on meter that's shown reading amps flowing through the cable - and it's receiving 12A from the charging station.
At the bottom of the pile is a 50 foot 10ga 120v extension cord that I intend to use whenever I'm in the field and a 120v outlet is the only option. The 10ga cord was expensive but necessary to enable sending enough current to the charger.
AVCON converter box plus adaptor cord plugged in
With everything unplugged so you can see it all.
NOTE: I just ordered a similar J1772 converter box, and it too has a NEMA 14-50 socket. Hence I'll be able to use this adapter cord for the J1772 converter.
I thought real hard about installing a NEMA 6-20 socket on the converter box in place of the 14-50 socket. It would remove the need for the adaptor cord. BUT if I were to be at an RV park with the car or other place with a 14-50 outlet I'll want to have an 14-50 adapter cord. Yes?