Electrical plugs are a common tool, which most households contain more than one. For different types of outlets, manufacturers made several categories of plugs. A lot of people get confused while looking at the design of plugs which seems uncertain.

And, sometimes, while exploring all of those, you notice there are holes. Well, why do electrical plugs have holes? To understand that, give your next 3 minutes to this guide which will explain everything in a simple way.

Why Do Electrical Plugs Have Holes In The Pins

So, Why Do Electrical Plugs Have Holes In The Pins?

Dealers made electrical plugs with holes for alignment in order to prevent different height sizes. Other than that, the proper grip and sealing are some reasons too.

In the US, most homes own the 3-prong or 2 prong plug which contains visible ‘circle’ holes, which has good reason to put these.

When you use them, they work exactly like a normal plug type (with no holes). You should check how to wire a 3 prong dryer outlet for study purposes where plugs with holes are being used.

Why Do Electrical Plugs Have Holes in the Prongs

To understand the point better, it’s wise to learn what are the holes in a plug socket called. Let’s find that out.

  • In a 2-pin plug, you’ll find two holes. One hole is a ‘Neutral’ pin on the left side of the plug. And, another hole in the ‘Hot’ or ‘Positive’ pin on the right-side.
  • In a 3-pin plug, there are 3 holes. The left pin is ‘Neutral’. Then, the right pin is ‘Hot’ or ‘Positive’. Lastly, the third one aka ground pin is located on the top.

After learning the above topic, now you can easily catch why are there holes in electrical plugs. Let’s go to the next section. Before that, grab the electrical plug that contains a hole for a practical viewpoint if not already. And, a good-quality one is a must here.

My Recommendation

  • TENINYU Outlet Converter is a pack of 2 pieces that are mostly used for household purposes. The best part is its functionality and reliability to use for other purposes.
  • Then again, the Trond Multi-Plug Outlet Extender is another top-notch option for daily usage. And, its 3 AC outlets option helps a lot to plug multiple devices at the time.

A Few Main Reasons for Holes in Electrical Plugs.

Grip Matter

The first reason that all electrical plugs have holes is due to grip. To put it simply, not all plugs hold dimple springs which makes it harder to attach the pins inside the outlet. The round circle in the tip of the plug’s pins plays a good role to ensure no slippage issue when being attached.

Also, they ensure a strong and secure connection to transfer an electric current. To do that, the holes of electrical plugs fit inside the outlets. Besides, a user doesn’t have to think of a disturbance of electricity.

Manufacturer’s Sealing Purpose

Another reason for the holes in the electrical plugs is because of the manufacturer’s benefit during the sealing project.

When a product is being made, sometimes it needed to be tagged or sealed with a zip tie or a label to differ the electrical plug from other types.

For convenience, the holes of plugs help a lot for dealers to tie down the zips or labels. With this special design, dealers can convey important text to their buyers.

Alignment Matter

Lastly, the electrical plugs have holes to ensure good alignment which helps the manufacturers to easily understand the 2 pin’s height. This way the dealers can save the spendings needed on raw materials.

Based on the Dunkin’ Donuts Munchkins theory, the manufacturers make the electrical wire pins using metal. With the melting procedure, the dealers construct them with holes.

And, the alignment helps the electrical wire pins (neutral, hot, and ground) to be leveled and stand at the right height.   

Frequently Asked Questions

1. Why do male plugs have holes?

Nearly all male plugs have holes in the tip of them which ensures a good connection to outlets. It as well ensures good passing of power to a device that is plugged.

2. What are the parts of a plug?

In general, a plug contains a good casing, 3 or 2 pins, a fuse, and a wire. All of these parts are essential to make the plug attached to the electrical outlet so that current transfer. The case of a plug is plastic with brass pins.

3. Can I use plug prongs without holes?

Yup, for sure! It actually doesn’t matter if the plugs have holes or not as long as they work to shift electricity from an outlet to a machine.  

Overall Thoughts 

That was all which you should know to understand the matter. Hopefully, this guide has successfully cleared your doubts and left you fully satisfied with the information after reading it. 

No matter how you see it, there’s always a reason why manufacturer designs adding something which seems unnecessary from a noob’s point of view. I have tried to mention all the things which might help you along with answering a few most-asked queries. 

Hope you have learned the reasons why do electrical plugs have holes in the electrical pins. I’ll be back with another fun topic in the next guide. Good Bye!