Leviton going for it

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Yeah but what happens if the installation calls for the ground to be facing down?
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Rob G - Seattle
 
The original version was not rated for continuous loads and would burn up. This must have been redesigned and resubmitted for approval. The no aluminum probably stems from manufacturers stating no aluminum in the branch circuit to avoid conductor failure.
 
The no aluminum probably stems from manufacturers stating no aluminum in the branch circuit to avoid conductor failure.
The problems with melted EV recepts that were properly installed originate from aluminum terminations heating up the receptacle, aluminum terminations have a narrower band of tolerance.
Remember aluminum oxide is pretty much an insulator, copper oxide is a conductor.
 
In general, this is really an issue with the product listing standards...compliance with the existing product standard can result in receptacle failures where the receptacle supplies an EV.

Just like there are different grades of 15 and 20 amp receptacles all listed to the same product standard with some of the grades having more contact surface area and contact pressure, and, of course, more cost, the same is true with the receptacles used for EVs.
Hubbell has had a industrial duty version of this receptacle for decades and is now advertising it as an EV receptacle. Levition just brought their heavy duty receptacle out.
 
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But if you have different grades of product, all evaluated to the same product standard, how is the different grade defined?

If a receptacle exceeds the standard by 10% in some respect (say contact area) and another exceeds by 40%, how would a customer determine if those differences are meaningful?

Jon
 
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