Thanks!

Interesting. I've wondered about those receptacles with dual T-slots before.

When exactly did it become standard for the parallel blades (5-15) to be 120V and the in-line blades (6-15) to be 240V only?

Here is my addition to this topic, this is a Hubbell with the matching plate!



[This message has been edited by Webmaster (edited 05-21-2003).]

Desoto, do you have any extras of that cover plate you'd let go? My mom's house uses that style, and would like to have extras for new outlets or replacements.

I will have to check around to see what I have. Since getting interested in this network and board it has sparked interest in my older electrical stuff that I have accumulated throughout the years! I even have lightbulbs from the 20's;original Mazdas!! I will scrounge around and get back to you on this!
Please visit my websites! www.noveltyradio.com and www.noveltyradio.com/family.html



[This message has been edited by desoto (edited 05-21-2003).]

Heyy...how come nobody puts little designs like that on the socket faces anymore???

They're just plain plastic now. Boring.

WA2ISE, can't tell you how many of those things I've cracked over the years by accident (and then replaced with metal plates after cursing a bit).

I've seen them a lot in Montreal -- in older buildings....

The ones I've seen are always covered in paint. They're sort of pretty looking. Wonder why they stopped making them....

Hey....I'm also curious about the t-slot receptacle as well as the 4 prong holed receptacles....I'd guess the 4 prongs were the fore runners to the t slots?

If you look it looks like on the 4 prongs the two tandem blades are very similar to the standard 6-15 receptacle minus the ground prong...or the horizontal slots on the t-slot receptacle.

I'd like to know what the tandem blade plugs were used on? It looks like it was obviously a 240 volt power source with a 10-15 amp max draw load.

Anyone know?

https://www.electrical-contractor.net/ubb/Forum17/HTML/000199.html

My workplace actually has some of the four-prong and double T outlets installed, though none of them are actually used for anything.

I also wonder why those plates aren't made anymore. They are sure pretty and they can't be more costly to make than the plain cover plates once the mold is set up.

I have some old decorative plates, but these have a neat design in the corners. Also have some with a gothic or arts & crafts look on the border. they are old brown plates from the 30's, before ivory came out.

My house was built in '35 and has 2 of the original single outlets in 2 bedrooms with the corner scrollwork in it. House also has 4 original pushbuttons also.

Simply, it is setting up the mould that costs,especially for that intricacy.

Plus there would be costs to the factory in keeping that line separate (most of the production would still be for the smooth plate), and in the supply houses in stocking them.

then there's this place:
http://www.switchhits.com/switchplates_misc_designs_light_switch_plates_covers_s03.html

wa2wise or anyone else that knows....will that tandem blade hubbell plug in the pic also fit into that NEMA 6-15 receptacle? I can't tell if the pins are wider than the slots on that 6-15 or.....????

Yes it does. I've since used that plug on a European domestic radio set that wants 230VAC. So it can be plugged into a NEMA 6-15 which I have a few of thruout the house.

Here's a female T slot cord cap for extension cords:



Made by Hubbell, 125V 15A, UL seal

Wa2ise: Kinda hard to tell from the pic., are the vertical slots different sizes on that cord cap?

Mike (mamills)

Yes, the vertical slots are differing sizes. Just like a polarized regular 120V outlet.

Were there any T slot male plugs? With prongs with both tandem and parallel parts?

[This message has been edited by wa2ise (edited 11-17-2006).]

Can't say I've ever seen a male plug with t-shaped prongs....I think there was the standard parallel (NEMA 1-15) and the standard tandem (like what's shown in the first pic)....

I don't suppose there were any plugs in the old days where one prong was tandem and the other parallel? Sorta like what would fit a NEMA 5-20 receptacle or a 6-20?

Also does anyone know when they stopped making receptacles out of porcelain and when they started making them out of plastic?