The Tesla manufactured adapters have a (required) mechanical interlock. You cannot unlatch the NACS side until the adapter is removed from the EV. Likewise the Tesla CCS to NACS also has this interlock.
Only an improperly designed adapter can be removed from the cable while still attached to the EV. Again; this is not optional, it's just the cheap adapter makers don't care. On Sat, May 16, 2026 at 7:09 PM jim--- via EV <[email protected]> wrote: > Standard advise on the Ford Lightning Forum is to NOT use any of the cheap > adapters - period. > > One thing Bill mentioned is that the pilot signal is the first to > disconnect with the connector is pulled apart, but on all the good adapters > (and charging cables), the pilot signal is also disconnected as soon as the > release button is pressed. Therefore initiating the shutdown as soon as > the mechanical release is pressed. And at least some (maybe most) EVs do > lock the connection until the vehicle is satisfied that power is off. That > does NOT prevent disconnecting the NACS plug from the NACS to CCS-1 adapter. > > Personally with my Lightning, I always stop the session either with the > stop button next to the charge inlet, or the stop button in the Ford App, > or the stop button in the charging network App. Then verify either with > the Charge dispenser or the vehicle display that charging has stopped > before I pull the connector out. > > Jim Walls > > > > -----Original Message----- > From: "(-Phil-) via EV" <[email protected]> > Sent: Saturday, May 16, 2026 18:28 > To: "Electric Vehicle Discussion List" <[email protected]> > Cc: "(-Phil-)" <[email protected]> > Subject: Re: [EVDL] Amazon.com: Eioehtl Upgraded NACS to CCS Adapter > > It takes the power electronics in a near half megawatt system to spool > down, and contactors to open. All the OEM adapters have the required > mechanical interlocks that PREVENT you from unlatching until the vehicle > knows the system is safe. > > It's also not unheard of for contactors to weld if asked to open under > load, then you have full pack there at the inlet, even if the power > electronics have shut off. > > The standard requires it, UL requires it, common-sense requires it, and > it's not that hard to implement. It's a carefully placed pin and spring, > that's it. > > On Sat, May 16, 2026 at 6:22 PM Bill Dube via EV <[email protected]> > wrote: > > > It _appears_ to lock onto both input and output connectors. > > > > As I recall, the pilot wire is the first to disconnect when the > > connector parts from the receptacle. > > When the pilot signal is cut off, this signals the charger to shut off > > immediately. Thus, no arc, at least in theory. > > There is all sorts of belt and suspenders safety stuff built-in to EV > > charging. > > > > Additionally, I believe that OEM EV's simply won't move when they are > > plugged in, aside from being physically towed away. > > Again, the belt and suspenders safety stuff... > > > > Bill D. > > > > On 17/05/2026 5:44 am, (-Phil-) via EV wrote: > > > Almost none of these low-cost adapters have the technically required > > > mechanical interlock. This means you can rip out the cable while > > high-amp > > > charging is occurring and this could cause an arc flashover which is > > > basically shorting out your battery pack! NEVER attempt to unplug one > > > until you stop the charging somehow. > > > > > > The Tesla made OEM adapters have a mechanical interlock that prevents > you > > > from disconnecting until the port is unlocked only after the system > > > determines there's no voltage present anymore, this is how it should > be! > > > > > > On Sat, May 16, 2026 at 10:04 AM Mark Hanson via EV <[email protected] > > > > > wrote: > > > > > >> Hi folks > > >> A friend sent me this $50 adapter that got good reviews. Although I > > bought > > >> a $200 GM Bolt adapter last year, I was curious if anyone has > experience > > >> with direct pulling the cord while charging, safety it claims incase > > >> someone else borrows the car and forgets to turn off the fast charger > > via > > >> the dash. > > >> Best regards mark > > >> > > > https://www.amazon.com/500A-1000V-NACS-Adapter-Superchargers/dp/B0DTDZP3HJ > > >> > > >> Sent from my iPhone > > >> _______________________________________________ > > >> Address messages to [email protected] > > >> No other addresses in TO and CC fields > > >> HELP: http://www.evdl.org/help/ > > >> OT: If you use an Android device, please read > > https://keepandroidopen.org/ > > >> > > > -------------- next part -------------- > > > An HTML attachment was scrubbed... > > > URL: < > > > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20260516/8e18c220/attachment.htm > > > > > > _______________________________________________ > > > Address messages to [email protected] > > > No other addresses in TO and CC fields > > > HELP: http://www.evdl.org/help/ > > > OT: If you use an Android device, please read > > https://keepandroidopen.org/ > > > > > > _______________________________________________ > > Address messages to [email protected] > > No other addresses in TO and CC fields > > HELP: http://www.evdl.org/help/ > > OT: If you use an Android device, please read > https://keepandroidopen.org/ > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20260516/ac429906/attachment.htm > > > _______________________________________________ > Address messages to [email protected] > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > OT: If you use an Android device, please read https://keepandroidopen.org/ > > > _______________________________________________ > Address messages to [email protected] > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > OT: If you use an Android device, please read https://keepandroidopen.org/ > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20260516/a527a3de/attachment.htm> _______________________________________________ Address messages to [email protected] No other addresses in TO and CC fields HELP: http://www.evdl.org/help/ OT: If you use an Android device, please read https://keepandroidopen.org/
