Jump to content

4 Slot Outlet


randynavarro
 Share

Recommended Posts

Why were non-parallel blades disallowed? Did the plugs slip out more easily or was NEMA trying to limit how much of the hot blade was exposed if the plug wasn't inserted all the way? Or am I being thick and not realizing the obvious?

I've never seen an outlet like the one in Randy's photo, and can't determine if the non-parallel slots are polarized, but I don't see what's dangerous about them.

Link to comment
Share on other sites

Originally posted by Bain

Why were non-parallel blades disallowed? Did the plugs slip out more easily or was NEMA trying to limit how much of the hot blade was exposed if the plug wasn't inserted all the way? Or am I being thick and not realizing the obvious?

They simply hadn't settled on a convention yet. At the time, you could buy plugs with parallel blades or in-line blades. Eventually, the parallel blade configuration became the norm. I doubt that there's any particularly compelling reason why one configuration succeeded.

The receptacle in Randy's picture is like a VCR machine that accepts both VHS and BETA tapes.

I've never seen an outlet like the one in Randy's photo, and can't determine if the non-parallel slots are polarized, but I don't see what's dangerous about them.

It's not any more dangerous that any old receptacle. And it has the bonus of accommodating old parallel-blade plugs.

- Jim Katen, Oregon

Link to comment
Share on other sites

  • 4 weeks later...

I found this old gem in my own house today (my house was built in '26). It was inside a wall, and energized. The interesting things you find when bashing walls down. Now I have another item to add to my box of old knobs, tubes and other things a house nerd would want to keep.

Image Insert:

2008119171213_Image00016.jpg

26.54 KB

-Brad

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...