A plug (the male part), yes. A Socket/Receptacle (female part), No. You absolutely cannot leave any pins non-connected.
On Mon, Sep 9, 2024 at 1:01 PM <e...@tucsonev.com> wrote: > Phil - code wise can you have a NEMA 14-X Plug with an unconnected pin > (neutral)? Another way of stating my question is - since the Tesla 14-50 > Plug has no wire connected to the neutral pin, is it code acceptable? > > Best, > > Rush Dougherty > TucsonEV > www.TucsonEV.com > > > -----Original Message----- > > From: EV <ev-boun...@lists.evdl.org> On Behalf Of (-Phil-) via EV > > Sent: Monday, September 9, 2024 10:25 AM > > To: Electric Vehicle Discussion List <ev@lists.evdl.org> > > Cc: (-Phil-) <p...@ingineerix.com>; Lawrence Rhodes > > <primobass...@sbcglobal.net> > > Subject: Re: [EVDL] Three connector 220 to 14-30 no neutral? > > > > Code-wise, You can't have an outlet (adapter or not) with a neutral NEMA > 14- > > x and simply leave that pin unconnected just because your "intended use" > > doesn't use it. If someone plugs something into there expecting a > neutral, > > it could be dangerous. That said, one thing you could do is saw off or > > remove the neutral pin on the Tesla 14-30 plug (since it's not connected > > anyway), and then epoxy up the socket on the adapter, then only the Tesla > > plug will fit. I did this on my Tesla 14-50 plug so I can also use it > on > > 14-30 dryer outlets without needing a second plug. > > > > Not exactly the fully above board thing, but at least it's safer. If > you > > don't want to do this, at least wire the ground to the "unused" neutral > socket, > > so if someone DID plug something in there, it would be less > > dangerous than leaving it floating. Keep in mind one day, you will > depart > > this life, you don't want to also force someone who later discovers your > > adapter to do the same! > > > > I have made custom plug adapters for the Tesla Gen 2 UMC, but it requires > > recovering the overmolded one-wire ID chip from inside the plug, you > can't > > just cut the cable an re-wire it, the UMC will not function. > > > > On Mon, Sep 9, 2024 at 6:31 AM EV List Lackey via EV <ev@lists.evdl.org> > > wrote: > > > > > On 9 Sep 2024 at 6:33, Lawrence Rhodes via EV wrote: > > > > > > > My Think EVSE finally died, after a decade of use... > > > > > > Very sorry to hear of your loss. > > > > > > > If I can trust my wife. > > > > > > If you can't, you - and she - have more problems than a dead EVSE, and > > > I don't think that this list can help much. :-\ > > > > > > > There is an L-30 twist lock. I need to adapt it to 14-30 to > > > > accommodate the Tesla EVSE. I saw one diagram that simply didn't > > > > connect the neutral. Two hots and a ground. Is that acceptable? > > > > > > As long as the new EVSE doesn't need 120v for something, that should > > > be fine. > > > > > > IMO, to be 100% safe you should fuse your adapter at 30 amps. The house > > > breaker protects at 40 amps. Probably very few people do this. I > admit, > > > I > > > didn't. > > > > > > > I vaguely remember combining hot and neutral. > > > > > > I'm not an engineer, but I wouldn't do that. I suspect that it will > > > get you one or more of 3 things, depending on how it's done: > > > > > > - Sparks 'n' arcs > > > - Tripped house breaker > > > - Damaged EVSE, if it wants 120v and you hand it 240v > > > > > > 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 > > > > > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > > > > > > In America, anybody can be president. That's one of the risks > > > you take. > > > > > > -- Adlai Stevenson (1900-1965) = = = = > > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > > > > > > _______________________________________________ > > > Address messages to ev@lists.evdl.org > > > No other addresses in TO and CC fields > > > HELP: http://www.evdl.org/help/ > > > > > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: <http://lists.evdl.org/private.cgi/ev- > > evdl.org/attachments/20240909/9f8c84d3/attachment.htm> > > _______________________________________________ > > Address messages to ev@lists.evdl.org > > No other addresses in TO and CC fields > > HELP: http://www.evdl.org/help/ > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20240909/ea49089d/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
