Home charger
AudiWorld Senior Member
Joined: Nov 2019
Posts: 856
Likes: 218
Mine got warm but not hot. It measured at a little over 90 degrees Fahrenheit with an ambient temperature in the 60s. If yours gets much hotter there may be an issue with the cable. But it could also be the outlet getting very hot, for example the wiring is not connected properly in the gangbox. Either way, certainly something to take a closer look at before something happens.
AudiWorld Member
Joined: Dec 2019
Posts: 275
Likes: 167
From: Fairfax Station VA
You are going to have heat in the cable while charging, it's the nature of 220v 40 amp charging. Now what is "Really Hot"? That needs to be more defined. The wire will be warm, but should not be so hot that you can't hold onto it with your bare hands. If it gets too hot, then the breaker will trip in your electrical panel box.
AudiWorld Senior Member
Joined: Nov 2019
Posts: 856
Likes: 218
You are going to have heat in the cable while charging, it's the nature of 220v 40 amp charging. Now what is "Really Hot"? That needs to be more defined. The wire will be warm, but should not be so hot that you can't hold onto it with your bare hands. If it gets too hot, then the breaker will trip in your electrical panel box.
I measured the temperatures during the first couple of charging sessions using an infrared thermometer (the ones with the laser pointer) which worked very well. I installed the wiring myself so I know the connections are proper and tight. But if the wires do not make a good connection at the socket or breaker, there will be more resistance and more heat as a result. Down the road the wire could slip out and cause an arc (and then potentially a fire). A standard breaker will not help here as code requires a GFCI not an AFCI, which is designed to detect arcs.
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