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Corded 14-50 Tesla Charger - Improved Speeds?

So Tesla is selling this for $520 (cough), and touts it as

"The Corded Mobile Connector features a NEMA 14-50 plug and improved charging speeds (versus standard Gen 2 Mobile Connector with NEMA 5-15 adapter)."

Why would the charging rate be faster just because the 14-50 plug is hard wired as opposed to the $45 adapter being attached? Even if it was, it would be nice if they listed what it was.....
 
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jcanoe

Well-Known Member
Oct 2, 2020
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Maryland
So Tesla is selling this for $520 (cough), and touts it as

"The Corded Mobile Connector features a NEMA 14-50 plug and improved charging speeds (versus standard Gen 2 Mobile Connector with NEMA 5-15 adapter)."

Why would the charging rate be faster just because the 14-50 plug is hard wired as opposed to the $45 adapter being attached?
The Corded (with a fixed NEMA 14-50 plug) Mobile Connector supports 240V and 40A. The Gen2 Mobile Connector that comes with the Tesla vehicle and accepts modular power plug adapters (including a NEMA 14-50 plug adapter) is limited to 240V and 32A. The reason has to do with the number of interconnects. The modular plug adds one more interconnect to the circuit so limiting the current to a maximum of 32A is safer. (The Gen1 Mobile Connector with the NEMA 14-50 power plug adapter would support up to 40A. There were some cases of the Gen1 Mobile Connector overheating, electrical fires.)

In addition to the fixed NEMA 14-50 plug the Corded my understanding is that the Corded Mobile Connector includes heavier gauge wire.

Charging using the Corded Mobile Connector is up to 25% faster than when using the Gen2 Mobile Connector; 240V and 40A (9.6kW) versus 240V and 32A (7.7kW).
 
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