Using an extension cord at a Tesla Supercharger could lead to overheating and short-circuiting, as these cords lack liquid-cooling support necessary for high-output charging.
Wes Morrill, Tesla’s lead engineer for the Cybertruck, emphasizes that the process of pushing 250 kilowatts through copper generates significant heat. Extension cords do not provide the cooling needed, hence increasing risks of overheating.
The Supercharger employs a temperature measurement in the handle that derates charging speeds; without this safety feature, the risks of using an extension cable increase.
Morrill's statements clarify that unlike the 'wet towel trick' which doesn't affect charging speed, the handle's temperature sensor plays a crucial role in safely managing charging rates.
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