Neat tandem parallel outlet I discovered in my century house .. 17 years after moving in. (No, it’s not live)

Jul 23, 2026 3:31 AM

gebirgsdonner

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So early in the US's electrical history (~1900), there were both parallel ( | | ) plug and tandem (— —) plug types around. This fit both.

1 month ago | Likes 7 Dislikes 0

(oops, that should say ~1910, stupid fingers)

1 month ago | Likes 6 Dislikes 0

https://plugsocketmuseum.nl/NorthAm3.html See figure 4 for another example

1 month ago | Likes 4 Dislikes 0

I'm not seeing that on NEMA charts. That could be extremely valuable to someone with a weird antique device https://www.americord.com/pages/nema-charts

1 month ago | Likes 13 Dislikes 0

https://plugsocketmuseum.nl/NorthAm2.html It's an artifact of two types of plugs being on the market at a time before total standardization.

1 month ago | Likes 9 Dislikes 0

Im seeing similar tandem only outlets going for like $20. If you were to sell I'd say start the bidding at $30 or $40 and pack it with as many keywords as possible like "vintage retro antique parallel tandem combo Montgomery ward socket outlet duplex" and see where the chips fall. There is clearly a market to some folks. If you are gonna use it I would say clean it with naptha for oils, dry it, isopropyl for sticky shit and an air compressor to get shit out of it without damaging it.

1 month ago | Likes 2 Dislikes 0

The reason I suggest those chemicals are that they are the least likely to interact with the bakalite, wont fuck up the patina and unlike soap are less likely to clot the dust into flammable shitnests as neither are good solvents for biological/fiberus materials like soap which is glycerin and water. You want the air compressor to move that shit as easily and fast as possible when you strip any base for them to stick to out.

1 month ago | Likes 2 Dislikes 0

We STILL haven’t agreed on a universal electrical socket 100 years later.

1 month ago | Likes 2 Dislikes 2

Sure we have. Except America which has like 5 designs at least. Every other country has one standard design.

1 month ago | Likes 3 Dislikes 4

We have a lot more than 5, but each serves a purpose. https://www.stayonline.com/product-resources/nema-straight-blade-reference-chart.asp

1 month ago | Likes 1 Dislikes 0

You mean like for 110v, 220v single phase, 220v 3-phase, specific amp load plugs for 15, 20, 30 and 50 amps, because homes have the std 110 grounded and a couple 220 for the dryer, and hvac units and some for the water heater... like in europe.

1 month ago | Likes 1 Dislikes 0

I think they meant universal as in worldwide. I know here our plugs can fit several countries but not that many.

1 month ago | Likes 2 Dislikes 0

I looked up 'Universal Plug' and regretted it.

1 month ago | Likes 2 Dislikes 0

Knob and tube?

1 month ago | Likes 11 Dislikes 0

You gotta buy me dinner first.

1 month ago | Likes 24 Dislikes 0

1 month ago | Likes 4 Dislikes 0

Yep. The hot and neutral lines are individually sheathed coming into rhe box.

1 month ago | Likes 2 Dislikes 0

Coming in her box, I dont normally wear a sheath on my HOT line

1 month ago | Likes 1 Dislikes 0

T is next to R on a keyboard and I turn off autocorrect

1 month ago | Likes 1 Dislikes 0