Leviton going for it

marmathsen

Senior Member
Location
Seattle, Washington ...ish
Occupation
Electrical Contractor
Yeah but what happens if the installation calls for the ground to be facing down?
2f466fdbe1947e33aab953539a9a9093.jpg


Rob G - Seattle
 

Paul_Briganti

Washington Electrical CEU, LLC
Location
Monroe, WA, USA
Occupation
Educator / VP Electrical Apprenticeship ABC Western Washington
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.
 

gene6

Senior Member
Location
NY
Occupation
Electrician
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.
 

don_resqcapt19

Moderator
Staff member
Location
Illinois
Occupation
retired electrician
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.
 
Last edited:

winnie

Senior Member
Location
Springfield, MA, USA
Occupation
Electric motor research
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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