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Gosh! You are just no fun at all!!!I think it would be safer to just point a heat gun at the adapter when charging. Or better yet, ask Tesla...
Oh wow, good thing I didn't try to test it! Just got a call from Tesla saying that a thermal fuse was an earlier concept, but in the end they ended up just using high temperature materials, better welds, and the firmware update to "solve" their issue. So, no thermal fuse at all.
Oh wow, good thing I didn't try to test it! Just got a call from Tesla saying that a thermal fuse was an earlier concept, but in the end they ended up just using high temperature materials, better welds, and the firmware update to "solve" their issue. So, no thermal fuse at all.
During final validation testing of the new design, the NEMA 14-50 adapter with internal thermal fuse was not any more robust than the original NEMA 14-50 adapter it was intended to replace. Accordingly, Tesla turned to an alternate replacement NEMA 14-50 adapter that was concurrently being developed. The alternate replacement adapter utilizes different internal material as well as a different weld process between wires and pins that result in a NEMA 14-50 adapter that is more tolerant to higher temperatures and less likely to degrade than the either the suspect NEMA 14-50 adapters or the originally proposed replacement.
So it looks like the melted UMC saga is going to continue....
So it looks like the melted UMC saga is going to continue....
Yeah, my new adapter has significantly more play too. Well, at least the welds are better. Sigh.
Well no, the new plastic and better welds should make sure that adapters don't melt. And then you have the firmware changes that reduce charging current.
Actually, I haven't heard about an adapter melting issue for a while now...
Hmmm, I hope you are right about this but my instincts say that, over time, wear will cause heating. Perhaps the new plastic will withstand higher temps but there are limits. I really liked the idea of a fuse as that would be far safer.
According to what Tesla told the regulator in a letter, they tested both the fused adapter and the one without a fuse and found that the fused one didn't help at all.
That's because there isn't much they can do to improve the adapter. The problem is also in the UMC end. Cutting off the adapter and using a male 14-50 plug eliminates most of the problems. I'm guessing that Tesla doesn't want to take on the expense of replacing the UMC with a new design due to cost, which is fine except for the fact that they are still using the crappy design. If something sucks, the last thing that should be done is make more of it.
I know that there are many others who dislike this idea, but I think the car's greater intelligence about the charging conditions is what's going to make the biggest difference here. Hotter plastics are good, but the car automatically backing down the current will play a big part in ensuring the cords don't melt.
Yes, compared to the blade sizes for the 14-50, the Tesla pins look minute. Are these tiny pin connections subject to any NEC requirements? Wonder what UL would say if they had to certify? Even the J1772 pins seem too small to me, although I suppose there is more surface area than meets the eye due to the male/female mating surfaces....I think Tesla should have switched to something like a UMC2 with bigger pin surface area that would be subject to less heat once the issues were determined. We saw early clues that the design was bad, and if they had made a design decision then, far less people would have been affected....
Yes, compared to the blade sizes for the 14-50, the Tesla pins look minute. Are these tiny pin connections subject to any NEC requirements? Wonder what UL would say if they had to certify? Even the J1772 pins seem too small to me, although I suppose there is more surface area than meets the eye due to the male/female mating surfaces.