EVSE NEMA 10-30 plug and cable getting pretty hot - is this normal?

If I have the option to return for a refund, I'll probably do that and get a hard wired Juice Box

 

I'm in contact with Mustart right now. They are very responsive. They are asking many questions..

 

UPDATE: I've been in communication with Mustart and last night, the cable exiting the 10-30 plug went up to 95.5 C. They asked me to send the EVSE back to them and they will replace it. They are going to send me a shipping label, so I won't have to pay for the shipping back to them.. Glad that they stand behind their product.. Now, the question is on how will I charge while I'm waiting for the new EVSE?? I guess I will have to rely on the free chargers in downtown..
The 120 Volt EVSE that came with the car won't cut it as I drive more per day than the EVSE can replenish.

 

I sent them another e-mail if they can exchange it for the 32 amp version with the 14-50 plug as it is a "safer" plug due to the ground wire.. The 32 amp version of the EVSE is actually cheaper on Amazon than the 26 amp NEMA 10-30 version.
Changing the outlet to 14-50 is fairly simple.. probably $20 in materials and 30 mins of work.. I believe that #8 wire is still fine for the 32 amp EVSE.. However, I believe that by code I'm required to go with a 50 amp breaker on a NEMA 14-50 outlet even though 40 amp would be sufficient for the 32 AMP continuous load.

 

Actually, the 10-30 plug went all the way to 65 C and the cable exiting the plug went to 95 C.. Returning the EVSE tonight and they will send me a replacement.. Would be nice if they can exchange it for the 32 amp unit with the 14-50 plug.

 

Well, considering that the 14-50 outlet is rated 50 amps, other devices could be plugged in to that outlet and if any of those devices pulls more than 40 amps, it would trip the breaker..

 

Got the return label and will return the EVSE in the morning.. Looks like they will try to get me an 32 amp EVSE with the 14-50 plug but they can't guarantee it but it doesn't matter. A replacement 26 amp for the 10-30 plug would be just fine as long as it does not get as hot.

 

Sent my EVSE to Mustart yesterday and they are sending out a new one with 32 AMP/NEMA 14-50 today.. Hopefully I'll get it on Saturday...
I'll change my outlet to 14-50 tonight. May also rewire with #6 or #4 wire instead of #8, just to be safe..

 

#4 is a pain but #6 isn't much different than #8.. I'll probably leave #8 wire for now as I have no intention of exceeding 32 amps but I may upgrade in the near future as I could use the outlet for my welder too. Currently, I'm using my welder on 120 volt and it doesn't have a lot of power... I can change it to 240 Volt when I need to weld thicker materials.. I don't really weld too much but I do have damage to my riding mower's deck and I need to weld it and with 120 Volt, it doesn't work too well..

 

I'm not sure. The NEMA 14-50 really is a 50 amp outlet and I'd think that a 14-50 outlet would have a 50 amp breaker. It's just like a regular 120 volt outlet.. You don't use a 5 amp breaker if your cell phone charger is only 3 amp maximum.. You'll still leave the 15 or 20 amp breaker. In my house, all 120 Volt outlets are actually on 20 amp breakers. I wonder if there is a different rule for EVSE's that you require a breaker specific to what you connect to the outlet. The danger I see is in case you sell the home and someone plugs in something with a higher load, it will trip the breaker. I'm not sure what the requirements for that are.
For now, I'll leave the #8 wire and 40 amp breaker.. All I need to change is to wire the ground and run it through the conduit to the new 14-50 outlet.

 

So, I left the 40 amp breaker and ran the ground wire to the new NEMA 14-50 outlet. Had to increase the size of the conduit to 3/4 as I couldn't fit the ground wire through the 1/2 inch..

 

Got my replacement 32 Amp EVSE and tried it for a minute.. Dash shows 7.5 kw speed.. Awesome. Hopefully, this one won't heat up like the 26 amp version.