By outlet did you mean the cover and 14-50 plug? Or the cables? I'm charging my car right now, and while the cover and plug are not warmer than ambient temperature (about 85F now), the short 14-50 cable to the mobile unit is quite warm, and so is the mobile cable itself. But I assume that's normal, since 32A constant current is a lot. My worry is in summer, when my garage is in the high 90s, and everything is hot even without charging. I got a few charging errors last year. That's when an overheat situation is more likely, as well as a higher fire risk. I watched my electrician do the job, and he said that if you do the installation right, any outlet should be fine. I guess is there's less chance of that with the above mentioned outlets. Mine is not one of those fancy metal ones, but it's not the cheapest Leviton either. It was the other brand (forgot the name) that was recommended here, so asked him for that. And that's what he uses, so not issues there. I was stunned when he told me it was only 85 bucks. Ha ha. I was expecting twice that. But it was done right behind my electrical box, so not even a foot of cable was needed. Plus it's safer that way, I'd assume (the less run, the safer, no?).