KEYLESS LAMPHOLDER?

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iwire

Moderator
Staff member
Location
Massachusetts
Re: KEYLESS LAMPHOLDER?

Originally posted by al:
Why is a lamphloder called keyless?
I don't think we do. :)

It's a lampholder or it's a keyless lampholder.

Keyless indicates it does not have a built in switch.

If you look at very antique brass lampholders the switch on them looked very much like a key. It is strictly a guess of mine that this is where the term 'keyless' came from.

Bob
 

gary

Senior Member
Location
California
Occupation
Retired electrical contractor / general contractor
Re: KEYLESS LAMPHOLDER?

KEYhole screw holes + LESS effort to install.

(I'm gussing)
 

al hildenbrand

Senior Member
Location
Minnesota
Occupation
Electrical Contractor, Electrical Consultant, Electrical Engineer
Re: KEYLESS LAMPHOLDER?

The Leviton Glossary of Electrical Terms under the section titled "Lampholder" offers this:
KEY </font>
  • <font size="2" face="Verdana, Helvetica, sans-serif">A lampholder with a flat or round "key" knob that operates an internal switching mechanism ("Keyless" lampholders do not provide an internal switching mechanism).</font>
<font size="2" face="Verdana, Helvetica, sans-serif">
 

monkey

Senior Member
Location
Arizona
Re: KEYLESS LAMPHOLDER?

While we are on the subject, why are all the pull chain lampholders on the market today designed for ceiling mount only? If you try to wall mount them, the chain binds on the side of the hole and they don't last very long. I've seen some older ones where there was a smooth groove for the chain to ride in when wall mounted.
 

davedottcom

Senior Member
Re: KEYLESS LAMPHOLDER?

Dunno Monkey! They just don't make em like they used to!
why do somepeople call a drywall saw a "key-hole saw"? :confused:
 

charlie b

Moderator
Staff member
Location
Lockport, IL
Occupation
Retired Electrical Engineer
Re: KEYLESS LAMPHOLDER?

Originally posted by davedottcom: why do some people call a drywall saw a "key-hole saw"?
My guess: Because the phrase was used long before drywall was invented, when walls were made of wood and plaster. You would use the tool for cutting holes in doors, so that the opening and locking mechanism could be installed.
 

davedottcom

Senior Member
Re: KEYLESS LAMPHOLDER?

I'm not buying that CharlieB!

Back then doors were also solid!... I don't think my drywall-saw/key-hole-saw would stand a chance!
I'm lucky if mine cuts through the hardened spackle!!!
:)
 

iwire

Moderator
Staff member
Location
Massachusetts
Re: KEYLESS LAMPHOLDER?

A drywall saw would not cut wood, a 'true' key hole saw will cut wood.

A keyhole drywall saw just shares the same shape as the old wood cutting keyhole saws.
 

LarryFine

Master Electrician Electric Contractor Richmond VA
Location
Henrico County, VA
Occupation
Electrical Contractor
Re: KEYLESS LAMPHOLDER?

Maybe the term refers the shape of the hole after the pilot hole is drilled and the cut is started.
 
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