HPWC Burned Up (Yikes!)

[FlasherZ]

There was another one with a bad crimp on the wire. Early in the process, but wondering if there's a bad batch...

 

[mknox]

This is the first report that I've seen of any such HPWC issue, whereas I've read many more reports of UMC failures.

AFAIK, most if not all of the UMC problems were at the point where it plugs into the wall. And even in those cases, some of them involved a loose or defective receptacle and not the actual UMC itself. I don't recall ever seeing anything about a problem in the UMC's electronics box.

 

[mibaro2]

Does this sort of stuff also happen with UMC? How do you prevent this? Set the amperage lower?

I've used my UMC since April 2014 on a 14-50 outlet without a problem. I normally charge at 33amps rather than 40 amps since I am not in a rush.

 

[ThirdMartini]

Got a call back from Tesla Service this morning. They are sending a tech tomorrow to drop off a new HPWC and to do an unrelated proactive service bulletin on the car. ( The Service Advisor had the picture from this forum in front of him... ) The garage has a NEMA 10-50R outlet on a seperate breaker already ( but obviously there is no adapter for the car for a 10-50R ) but since I need to get an electrician out here anyways I'll have him swap in a 14-50 on a separate bill just in case. ( The 14-50 is ~4 feet from the main box.. so even if they have to rewire, it should be pretty cheap )

In the end I'd still trust the HWPC over a home depot outlet for higher current, after all the unit did what it's supposed to when somehting fails.. IE: it cut power and prevented a fire... so thats a huge win in my book.

 

[Rocky_H]

Are there other threads about this? First one I've seen.

Would you mind pointing them out?

Sure, here are some I just searched for here on this forum. Some are extreme overheating and others are just failures.

http://www.teslamotorsclub.com/showthread.php/48988-My-HPWC-almost-melted-down!!!

http://www.teslamotorsclub.com/showthread.php/18711-HPWC-kapoooooooot!

http://www.teslamotorsclub.com/showthread.php/31557-HPWC-Charge-handle-temperature-80-amps

http://www.teslamotorsclub.com/showthread.php/14661-Problems-with-HPWC

http://www.teslamotorsclub.com/showthread.php/47881-HPWC-Down-for-second-time