HPWC Charge handle temperature @ 80 amps

[AnOutsider]

So with the recent charging interrupted notification issues I've had to go out to my car rather often to plug it in again. I don't know if this is the norm or because of the rapid interrupt and restart, but the cable is extremely hot to the touch when I go to unplug (and reinsert) the cable. Could be this is the norm and I've only recently noticed because of the interrupts.

 

[mknox]

From what I can tell, the HPWC connector's pin-sleeves are wearing mechanically over time. A thorough cleaning does very little to reduce the temperature - so it's not dirty contacts, and it just seems as if the mechanical connection is working its way to be less tight than it is when new. I've had my cable replaced 3 times now, each time due to high heat exceeding 180 degrees F when charging at 80A. Each time the heat dropped dramatically, so it doesn't appear that the car connector's pins are wearing.

I was going to post the same thing when I saw @FlasherZ's comment. I've had 3 UMCs now and I believe that they become mechanically loose over time. Cleaning carefully with a Q-Tip and compressed air only helps marginally, but in all 3 cases, it would get to the point that it wouldn't connect at all, and the port light would just stay white. While on its way to total failure, I could sometimes get it going by "wiggling" it back and forth, hence my suspicion it is a mechanical problem. I recently purchased and installed a HPWC. It's been rock solid, but it's only a couple of months old.

 

[AmpedRealtor]

My HPWC cord was replaced this morning. Hopefully it will be a little bit cooler. The electrician said Tesla has received a lot of calls for replacement in recent weeks. We've also had a spike in ambient air temperatures - up to 117 last week, I believe. The two may be related.