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why are there holes in electric plug prongs?



 
 
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  #1  
Old March 7th 08, 01:14 AM posted to alt.home.repair
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Posts: 5
Default why are there holes in electric plug prongs?

Not technically a home repair topic, but:

Do the holes in the prongs of an electric plug serve any purpose? If so,
what is that purpose?
Thanks for any information.
--
alan
(just curious)

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  #2  
Old March 7th 08, 01:22 AM posted to alt.home.repair
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Posts: 2,906
Default why are there holes in electric plug prongs?

"*alan*" wrote in message
et...
Not technically a home repair topic, but:

Do the holes in the prongs of an electric plug serve any purpose? If so,
what is that purpose?
Thanks for any information.
--
alan
(just curious)



Why is there never a plug historian around when we need one?


  #3  
Old March 7th 08, 01:25 AM posted to alt.home.repair
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Posts: 5
Default why are there holes in electric plug prongs?


"JoeSpareBedroom" wrote in message
...
"*alan*" wrote in message
et...
Not technically a home repair topic, but:

Do the holes in the prongs of an electric plug serve any purpose? If so,
what is that purpose?
Thanks for any information.
--
alan
(just curious)



Why is there never a plug historian around when we need one?

I'm confident that one will come to the rescue ;-)

  #4  
Old March 7th 08, 01:28 AM posted to alt.home.repair
jim
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Posts: 115
Default why are there holes in electric plug prongs?

On Mar 6, 10:14*pm, "*alan*" wrote:
Not technically a home repair topic, but:

Do the holes in the prongs of an electric plug serve any purpose? *If so,
what is that purpose?
Thanks for any information.
--
alan
(just curious)


http://home.howstuffworks.com/question301.htm
  #5  
Old March 7th 08, 01:37 AM posted to alt.home.repair
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Posts: 4,480
Default why are there holes in electric plug prongs?

*alan* wrote:
Not technically a home repair topic, but:

Do the holes in the prongs of an electric plug serve any purpose? If
so, what is that purpose?
Thanks for any information.
--
alan
(just curious)

Hi,
When you plug it in it mates with dimpled tab to make secure contacts.
If in double break apart a receptacle(only couple dollars a piece) and
see for yourself.
  #6  
Old March 7th 08, 02:12 AM posted to alt.home.repair
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Posts: 5
Default why are there holes in electric plug prongs?


"jim" wrote in message
...
On Mar 6, 10:14 pm, "*alan*" wrote:
Not technically a home repair topic, but:

Do the holes in the prongs of an electric plug serve any purpose? If so,
what is that purpose?
Thanks for any information.
--
alan
(just curious)


http://home.howstuffworks.com/question301.htm
Thanks Jim!

  #7  
Old March 7th 08, 02:12 AM posted to alt.home.repair
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Posts: 5
Default why are there holes in electric plug prongs?


"Tony Hwang" wrote in message
news:r%0Aj.53140$w94.18459@pd7urf2no...
*alan* wrote:
Not technically a home repair topic, but:

Do the holes in the prongs of an electric plug serve any purpose? If so,
what is that purpose?
Thanks for any information.
--
alan
(just curious)

Hi,
When you plug it in it mates with dimpled tab to make secure contacts.
If in double break apart a receptacle(only couple dollars a piece) and see
for yourself.


Thanks Tony!

  #8  
Old March 7th 08, 02:31 AM posted to alt.home.repair
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Posts: 22
Default why are there holes in electric plug prongs?

come on now, lets tell alan the truth...it's so you can
snip off the grounding plug, and then its easier to snip
through the blade, cause it's usually the larger one, then
you can plug it into a 2 prong nongrounded plug........
your welcome


"*alan*" wrote in message
et...
Not technically a home repair topic, but:

Do the holes in the prongs of an electric plug serve any purpose? If so,
what is that purpose?
Thanks for any information.
--
alan
(just curious)



  #9  
Old March 7th 08, 03:03 AM posted to alt.home.repair
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Posts: 1,393
Default why are there holes in electric plug prongs?

*alan* writes:

Do the holes in the prongs of an electric plug serve any purpose?


Also if the device being powered is shorted, when you insert the plug into
an outlet, the narrower conductor around the hole tends to melt off (pow!)
before you can insert the plug all the way. I don't know that this is by
design, but it is a beneficial aspect.
  #10  
Old March 7th 08, 07:14 PM posted to alt.home.repair
DT
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Posts: 342
Default why are there holes in electric plug prongs?


Do the holes in the prongs of an electric plug serve any purpose? If
so, what is that purpose?
Thanks for any information.



When you plug it in it mates with dimpled tab to make secure contacts.
If in double break apart a receptacle(only couple dollars a piece) and
see for yourself.



The Straight Dope addressed this question, and there seems to be no one simple
answer:

http://www.straightdope.com/classics/a2_389.html

Just for the record, I just dismantled two outlets, one inexpensive one and the
other a high end commercial quality Decora... no dimpled tab in either, just
flat copper strips.

--
Dennis

 




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