Recent content by JimLovewell

I was ask by others in the forum how I installed a Hubbell HBL9451C Plug onto my UMC. Disclaimer: I hesitate to give these instructions because they are for someone skilled in electrical rework. Skills needed to install a Hubbell HBL9451C Plug on to the Tesla Model S UMC: Stripping wire...

Note, my main breaker is 400 Amps. It feeds 3 125 Amp. subpanels with 100 Amp. breakers. My HPWC gets a 100 Amp. breaker all by itself.

Yes!!! You are never going to burn up your home or garage by installing over size wire. There are 3 EVs in my family (2 Leafs and 1 Model S). I have 3 EV chargers at home (HPWC, Blink & the Nissan charger modified by EVSE Upgrade to 240 VAC, 20 AAC). I personally run 6 GA wire (or larger) for...

When I cut off my Tesla 14-50 adapter and replaced it with a Hubbell HBL9451C 14-50 plug I notice that the Tesla UMC cable has 7 conductors (2 red conductors and 2 black conductors for carrying the 40 Amps, 1 green/yellow stripe and a blue and violet signal wires). The red wires are in...

I have similar concern. After using my UMC for a year at 40 Amp. I notice the Tesla 14-50 adapter plug felt very warm. When I measured it with an IR thermometer and it was 68 °C (43 °C above ambient), ouch! I immediately throttled back charging to 30 Amps. while I figured what to do. After I...

The more I think about it the non-reversible temperature labels are a great idea! I bought some. I plan to place several around on warm spots and check on them every time I plug-in.

I am curious what temperatures people are seeing. I saw 68 degrees C on my UMC adapter before contacting Tesla service. I replaced my 14-50 outlet replaced and the UMC adapter temperature decreased to 50 degrees C (28 degrees ambient). So, the temperature dropped 18 degrees C (a step in the...

I also think for safety’s sake installing a smoke detector is a prudent. Hopefully, you can here it when it goes off. I would also recommend picking up a $17 Cen-Tech Infrared Thermometer from Amazon. I believe checking your equipment’s temperature is the best way to spot trouble. It is...

Yes, I also want to see how the new gray adapters fair. I plan to post the results of my new gray adapter resistance measurement. I also think for safety’s sake installing a smoke detector is a prudent. Hopefully, you can here it when it goes off. I also recommend picking up a $17 Cen-Tech...

I very much agree with you we should be installing a smoke detector! Hopefully, you can here it when it goes off. I would also recommend picking up a $17 Cen-Tech Infrared Thermometer from Amazon. I believe checking your equipment’s temperature is the best way to spot trouble. It is what the...

Update on replacing my Tesla 14-50 adaptor with Hubbell HBL9451C 14-50 plug. First, (background) I got frightened on March 13, 2014, when my Tesla 14-50 adaptor felt hot. When I measured it using an IR meter it was running 68 °C (154 °F), that is 43°C above ambient. I promptly replace the...

Hi FlasherZ, Normally I would agree with you that one should not run 48 Amps though a 50A rated receptacle but this receptacle uses the same contacts that are in the 14-60 receptacle. So, I know I will get very low resistance on a good receptacle. I have check my temperature rise with 48A...

Hi EarlyAdabter, Yes, I did inspect my outlet when I installed it a year ago. At that time both contacts average around 0.50 mOhm of resistance (each contact power dissipation was under 1.0 watt, good). Today, one of contacts varies from 1.00 to 7.55 mOhm of resistance when I plug into it...

After reading this tread I am more convinced than ever that this issue is really not going away (even with the new adapter that Tesla says they will be sending out). I also have been fighting a hot adaptor. I keep cleaning the contacts with contact cleaner and the temperature goes down 5 to 10...