On 13 Feb 2026 at 7:15, DOOLEY PHILIP G JR via EV wrote: > using a neutral pin for earth might be a misuse, but the J1772 connector > does this.
My first thought reading this was a bit of ignorant skepticism - why would J1772 need a neutral pin? I've never used a J1772 personally, so I looked at the description here. http://evdl.org/docs/j1772description.pdf On the first diagram on page 2, titled J1772 Interface, I noticed 2 extra pins, not shown as in use in the diagram on the first page. Page 3 has a full pinout for the connector. It does indeed illustrate 3 large (presumably high current) pins. It describes them as mains, mains, and ground/neutral. Combining ground and neutral that way is reminiscent of the bad old days of US 3-pin 30 amp clothes dryer and 50 amp electric range connectors. It's very surprising that the J1772 designers thought that way. One more puzzle - In addition to the smaller pilot pin, there's a second smaller pin described as no connection. Now I wonder what that "no connection" pin might have been reserved for in the original J1772 specification. Does anyone know the history? David Roden, EVDL moderator & general lackey To reach me, don't reply to this message; I won't get it. Use my offlist address here : http://evdl.org/help/index.html#supt = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = First they came for the journalists. We don't know what happened after that. -- Unknown = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ Address messages to [email protected] No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
