Gregory's Server
@momo @das_menschy @Wifiwits @cgudrian @LilahTovMoon "No idea if we got the license or not. The inspector ran screaming towards the horizon and disappeared there. š¤·āāļø" ;-)
|
9 comments
@weezmgk @Habrok42 @momo @das_menschy @Wifiwits @cgudrian @LilahTovMoon I agree it's most easily explained by a charger issue, but how should the car detect that, given that it's not grounded itself? I think the charger would have to have not only L and N reversed, but also PE connected to L, plus probably no RCD.  @cm N & earth should be at at the same potential (or mV close to it). If it isn't, the car should disconnect and go into a fault mode and put an alarm notice somewhere (dash cluster? Display screen?) This is what they pay the EEs big bucks for. @Habrok42 @momo @das_menschy @Wifiwits @cgudrian @LilahTovMoon @weezmgk @Habrok42 @momo @das_menschy @Wifiwits @cgudrian @LilahTovMoon What the car sees on L, N and PE might not be the same as the outside world does, assuming sufficiently malicious wiring in the EVSE. And without a stake in the ground you can't really determine whether the wire labeled "PE" is at that potential. @cm There's an earth reference in the charge connector, which should be sufficient to determine if L&N are correct or reversed. Most device design simply trusts that the sparky who wired the residence didn't cock it up. But it is possible to detect such a fault and protect the user from it. At the price of an EV, I would rather expect that feature would be there, it's not a toaster. @Habrok42 @momo @das_menschy @Wifiwits @cgudrian @LilahTovMoon @weezmgk Itās rapidly approaching a toaster if you stand barefoot and touch the wheel while charging in this situation :/ @weezmgk @Habrok42 @momo @das_menschy @Wifiwits @cgudrian @LilahTovMoon J1772 is used for both 120v and 208/240V, so the same two pins are use for L+N and L1+L2. There's no reason to care what the potential of L and N are relative to PE for the onboard charger, the charger just needs to draw current from the two line inputs at whatever potential they are relative to each other. This seems like the PE is connected to line.  @weezmgk What do you mean ? Even if Neutral and Live wires were inverted in the charger wiring, which sucks already, the chassis wouldn't be under 120 Vā¦ Neutral IS NOT supposed to be connected to chassis. That's Protective Earth Wire role to ground chassis. PE and N have to same potential, 0V, but aren't supposed to be connected to each other. If electried chassis is connected to Neutral, it wouldnt be properly groundedā¦ @Habrok42 @momo @das_menschy @Wifiwits @cgudrian @LilahTovMoon |
@Habrok42 @momo @das_menschy @Wifiwits @cgudrian @LilahTovMoon It's most likely the charger is miswired- they are using AC charging and line and neutral are reversed. Neutral should be at ground potential, so if there's LN reversed, the chassis of the device (appliance, Cyberturkey, wotever) will have line voltage present. However, there's no excuse for the vehicle not detecting this wiring fault and warning the user and disconnecting the AC charger- that part is on Tesla