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Scary issue with Nema 14-50 adapter melting

Raven

Member
Oct 9, 2012
295
19
US
If it's the same unit that was burnt by the outlet, it could easily have been damaged enough to be causing a poor connection on that side. Definitely replace it.

If you check out my pics you will see it fully melted the one terminal and also the adapter. As I said, I replaced both the outlet and the adapter, but with a Leviton outlet rated to 75C. Cord was not damaged at the adapter.
 
Last edited:

tga

Supporting Member
Apr 8, 2014
3,873
2,678
New Hampshire
This is from another post


Please don't hack off the UMC's wall plug socket without understanding that there is a fourth control pin with the following resistance values to ground:

Tesla UMC Plugs Resistance

40 amps - 9.08k ohms

24 amps - 33.16k ohms

16 amps - 75k ohms

12 amps - 140k ohms
I'm adding this datapoint to every thread where I see this table -

32 amps - 20k ohms (measured from a Canadian 14-50 adapter)
 
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