Definition of Duplex

[Barnabas]

I'm seeing several 30A receptacles advertised as "duplex," though they can accept only a single plug. I thought "duplex" meant a receptacle where you could connect two devices, like the 15A/20A duplex receptacles on every wall of a typical house. What I am seeing on the following web pages are not duplexes, but they are calling them duplexes. Has the term changed while I was not looking?

https://www.fastenal.com/products/details/0736961
https://www.lowes.com/pd/Eaton-30A-3-480V-Industrial-Receptacle-RD/1002871234
https://www.acehardware.com/departm...al/switches-outlets-and-plugs/outlets/3701547
https://hdsupplysolutions.com/p/hub...-blade-duplex-standard-outlet-(black)-p336699

 

[rlitman]

The receptacle isn't duplex, but it fits into a standard duplex space.

 

[u2slow]

I think it's retail verbage.

In the trade, a standard aka single-gang "device box" fits a single or duplex device.

 

[Terry D]

2020 Code Language:

Article 100.

Receptacle. A contact device installed at the outlet for the connection of an attachment plug, or for the direct connection of electrical utilization equipment designed to mate with the corresponding contact device. A single receptacle is a single contact device with no other contact device on the same yoke or strap. A multiple receptacle is two or more contact devices on the same yoke or strap.

Informational Note: A duplex receptacle is an example of a multiple receptacle that has two receptacles on the same yoke or strap.

 

[cybrdyke]

Barnabas- you haven't lost your mind. What you are seeing are graphics designers and webmasters that are making websites for products that they know nothing about. Often, when one of them makes a mistake, the others blindly copy him and make the same mistake.
CD

 

[larry4406]

Barnabas- you haven't lost your mind. What you are seeing are graphics designers and webmasters that are making websites for products that they know nothing about. Often, when one of them makes a mistake, the others blindly copy him and make the same mistake.
CD

Blind leading the blind..

 

[nadogail]

A Duplex is two dwelling units, usually mirror images of each other, in one structure

 

[sparky 1971]

du·plex | \ ˈdü-ˌpleks also ˈdyü- \

Definition of duplex​

(Entry 1 of 3)
1a: having two principal elements or parts : DOUBLE, TWOFOLD
b: having two complementary polynucleotide strands of DNA or of DNA and RNA
2: allowing telecommunication in opposite directions simultaneously


I see nothing in post #1 that fits any of the definitions. Someone entered the data that has no clue what it even is. It's happening everywhere. I didn't look at all of them, but the Fastenal sight has a picture of a 5-30R and it says 6-30R in the description. The Hubbell site however has everything right on the #9330 so it has to be on Fastenal's end.

 

[wyliesdiesels]

Barnabas- you haven't lost your mind. What you are seeing are graphics designers and webmasters that are making websites for products that they know nothing about. Often, when one of them makes a mistake, the others blindly copy him and make the same mistake.
CD

Beat me to it

 

[wyliesdiesels]

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