My electrical ??? Plug type?

paul · Nov 25, 2015

So, borrowed a grain screener from a friend, and it has this style plug on it. Wired for 220v

Went to the box store and farm supply store, and thy don't carry that.

Is this obsolete?

I know I can rewire his cord to something else, but I'd prefer to find a female socket of this type, are they still out there?

If not, what replaced it?

The one on the wall is upstairs in my corn crib, not exactly access able for my needs, and need it up there for the corn crib belt motor....

Paul

Ted in NE-OH · Nov 25, 2015

Lowes has them

kub6040 · Nov 25, 2015

I think that is called an L14-30. I am not an electrician so don't take my thought to the bank .

Tom in TN · Nov 25, 2015

Paul,

It's called a "lockable" plug. Its structure keeps it from easily being pulled from the socket because it is twisted when you plug it in and then has to be twisted the opposite direction when you want to unplug it.

Any electrical supply house will have them.

Tom in TN

Steve@Advance · Nov 25, 2015

That's called a "twist lock". I can't quite read the number on the male plug, but it's there in the white plastic part. Just match that number to the receptacle number. Better hardware stores or electric supply should have one.

On the back side, where the wires connect, one will be marked with a "G" and have a green screw. Be SURE to connect that one to ground! Be a good idea to open the borrowed one and make sure it is wired correctly. The other 2 screws are the line leads, they can connect either way, but if color coded, brass to black, silver to white.

hrRoss · Nov 25, 2015

check for numbers on the side of plug. menards has them,3 different styles, i just went thru that, thats how i know, made 3 trips. 1 is 120v 20 amps, one is220 volt 20 amps, one is 220v 30 amps. the difference between 120-220v is the diameter of the prong circle, 220v is a little larger circle

JMS/.MN · Nov 25, 2015

My screener has the same type- I call it a twist-lock. Pretty sure the local hardware store has them. (Hardware Hank) I bought them before when making a portable breaker box.

paul · Nov 25, 2015

Menards does not have them.

There are 15, 20, and 30 twist locks on the shelves.

They all three have the L shaped leg, the L is bent inward towards center.

On what I need, the little extra notch is pointing outwards. It is a 20.

After buying a wrong one, because I knew it was a 20 amp twist lock should be easy......

I just took my iPad with the pics in to two stores, Menards and Rinnings, and there is nothing on the shelves like this twist lock.

There is one with an outward notch like my pictures - that one is a 4 pin twist lock, I have a 3 pin.

So, I'm wondering if my style has been discontinued for some reason, perhaps replaced with that inward L I see?

Paul

paul · Nov 25, 2015

Here, again, is the white plug I need to plug in. The ground pin has a fat outward projection L shape.

The red one is the 20 amp I bought, assuming it was going to just hook up.

Nope.

See how the ground pin is more L shaped, and the L turns inward, and the leg of the L is on the other side?

(And yes there are many ways to modify things and make something work out.... But the deal is wired up and owned by someone else so I really dont want to mess with it overly, would be easier to just buy a compatible socket if they still make them.)

Paul

Nathan (SD) · Nov 26, 2015

The receptacle in your corn crib is a NEMA L9-20R.

The plug would be a NEMA L9-20P

Nathan (SD) · Nov 26, 2015

L14-30 has 4 prongs.

WellWorn · Nov 26, 2015

Paul, I believe it is obsolete. The giveaway is the 'silver' prong, which is by standard conventions a "neutral", with the other two as phase 1 and phase 2 of a 240 single phase circuit. NEC has specified that ALL 120 or higher circuits need a ground (a non-current carrying conductor), and the blade of a plug or receptacle marked as "neutral" is not acceptable as ground, even if hooked up that way. You'll notice that all grounded twist-lock plugs have a brass 'L' blade, that is a bit longer than any of the rest, and THAT is the ground. In a 240 4 wire circuit, the neutral will be 'silver', and no longer than the phase blades.

mazemeister · Nov 26, 2015

Paul, We used to have plugs and receptacles like your friend's grain cleaner all over the place on the farm. about 15-20 years ago, we stopped being able to find them. Haven't seen new ones since. So as they go bad, we've been changing them out to the NEMA L6-20, which is the red and white connector in your pic. Pain in the drain, but what can you do. I just did a google search for L9-20 and I think the "bump" on the ground prong is a different shape; don't think it's what you've got. So can't help you but can sympathize.

massey333 · Nov 26, 2015

Paul and others,there are at least 50 different 3 prong twist lock configurations plus that many 4 prong plugs and none will interchange,NEMA and NON NEMA on top of that.90 to 95% are not carried by any hardware or big box stores and 50% not carried by some electric supply houses.Same thing as going to JD or CIH and wanting parts for your MM-AC or Chevy.Like was said the numbers will be on the plug and good luck.

John B. · Nov 26, 2015

Yes and the one female port is smaller than the other one.

John B. · Nov 26, 2015

The plugs are still available.

What I would do is ask him if you can cut his cord about 18" behind his cord plug then where you cut the cord install a male end on the motor side that you can use then install a female end on the 18" you cut off to match the new male plug you install on the motor side. This way when you're done using it all you have to do is plug the 18" piece back on the main cord and he's ready to go again. The 18" piece becomes an adaptor then so it can be used at different locations.

I've wired some things 220v just so others can't borrow them. This is what you run into.

Mark-Mi · Nov 26, 2015

NEMA plug chart.
plug charts

Mike M · Nov 26, 2015

I just asked Billy Bob and he said to just take the plug off and shove the wires into the holes !

TomA in CA · Nov 26, 2015

About all you can do is get a plug that matches your recepticle, remove the plug from the screener and replace it with the new one. Before you return it put his plug back.

Jim in rush co · Nov 26, 2015

Leviton brand 20 amp, 125-250 volt, Turn and Pull- twist lock and still sold.

My electrical ??? Plug type?

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