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Thread: Porcelain Keyless Lampholder

  1. #1
    Join Date
    Feb 2003
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    Bremerton, Washington
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    Porcelain Keyless Lampholder

    My wife and I were at several McMenamins over the weekend, they all feature many different types of luminaires, and very commonly use a porcelain lampholder with small 7 1/2 watt lamps in various colors.
    My wife asked and my question is what is a porcelain keyless lampholder? What makes it a "keyless"?
    (Note: Mcmenamins is 50+ historic properties, brewpubs in the SW Washington and Oregon area. We went to all the locations, got passport stamps and and are now "cosmic tripsters")
    Moderator-Washington State
    Ancora Imparo

  2. #2
    Join Date
    Mar 2016
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    The Motor City, Michigan USA
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    It's "keyless" when it doesn't have a pull-string switch built into the porcelain lampholder.
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    The opposite kind of porcelain lampholder, which I've never heard called "keyed".
    Attachment 19972
    Last edited by drcampbell; 03-20-18 at 11:35 PM.

  3. #3
    Join Date
    May 2005
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    Richmond, Virginia
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    Keyed:

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    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  4. #4
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    Apr 2009
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    Williamsburg, VA
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    Quote Originally Posted by LarryFine View Post
    Keyed:

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    Was an actual key of sorts used at some point, or just a switch handle that looks like a key?
    Electricians do it until it Hertz!

  5. #5
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    Jul 2006
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    Quote Originally Posted by JFletcher View Post
    Was an actual key of sorts used at some point, or just a switch handle that looks like a key?
    The latter, I find a post by one Jreaf-
    The old gas lamps had "keys" that you used to control the amount of gas and thus the light level, essentially an early dimmer.
    Vaguely apropos of that, lots of older telco equipment switches are referred to as "keys". (And to muddy the waters, the classic office telephone with line select/hold buttons is called a "key set" as part of a "key system". I still have my BSPs on those .)

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