suxxer
ElektroVolt
Putting a meter onto my NEMA 6-20 adaptor shows a diode, small signal silicon, cathode connected to ground and anode connected to what would be the neutral.
Yes, please open it (it's only two screws..).
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Putting a meter onto my NEMA 6-20 adaptor shows a diode, small signal silicon, cathode connected to ground and anode connected to what would be the neutral.
Don't think so. I believe that minimum current is what the Roadster draws when the pilot signal is connected to ground. Swiss Roadsters default to 10 Amps since that's what is set in their firmware.Recapping also that the Swiss UMC seems to have different current settings from the USA version.
Swiss: 10A through 32A
USA: 12A through 40A
(Correct?)
I bet the different UMCs use the same "keying" system to detect different plug types, but have different current levels depending on which version of UMC.
For instance, if you put in a Swiss end labeled "10A" into a USA UMC would it then tell the Roadster that 12A was available?
I believe that minimum current is what the Roadster draws when the pilot signal is connected to ground. Swiss Roadsters default to 10 Amps since that's what is set in their firmware.
I believe that minimum current is what the Roadster draws when the pilot signal is connected to ground. Swiss Roadsters default to 10 Amps since that's what is set in their firmware.
if you brought a Swiss UMC to the USA,
Love that quote! :love:Stop believing and start knowing
For some reason, I cannot view your images. They aren't showing up inline.... (see image)...
Yes, I thought/assumed it might be like that....So what's the conclusion? Right, the Firmware of the UMC is modified to the needs of the local infrastructure (therefore the minimal current is 10A). I guess each setup (wires open, wires closed, diode one way or another) can be programmed into the UMC to generate the appropriate pilot signal...
What do other EU Roadsters default to - in countries where normal outlets are 16A?
As stated in a previous post, the twist lock connector is a standard california connector available from any electrical supply house.
Indeed, not available in home depot though, it's a specialist, non-standard part that has to been ordered from a bespoke supplier. And, I wasn't able to see a california one that had the metal plate inside the recess. I do believe that's just there for show or creating a firmer grip as the UMC female has a nice spring pressing against the metal plate.
I have a strong suspicion that it is not just for show and not just mechanical. I imagine that it is made of a conductive material with a conductive contact for a reason.I wasn't able to see a california one that had the metal plate inside the recess. I do believe that's just there for show or creating a firmer grip as the UMC female has a nice spring pressing against the metal plate.
The metal plate and side contact are the ground connection (marked with green). The three twist lock contacts are black, red and white for L1, L2 and neutral.I have a strong suspicion that it is not just for show and not just mechanical. I imagine that it is made of a conductive material with a conductive contact for a reason.
That makes sense. So, the metal plate is a safety ground, but I suppose it doesn't carry charging current. I assume the charging current flows between L1 and L2. Is Neutral separate from ground?The metal plate and side contact are the ground connection (marked with green). The three twist lock contacts are black, red and white for L1, L2 and neutral.
That may depend if you are using a 3 prong or 4 prong plug end... (?)...Is Neutral separate from ground?
So far, the UMC adapters that I have inspected do not use the 4th prong (or is it technically the 3rd prong that they're not using?).That may depend if you are using a 3 prong or 4 prong plug end... (?)