ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Norwegian power?
by dsk. 04/26/19 03:56 AM
20amp breakers
by gfretwell. 04/25/19 10:19 PM
"Esoteric" countries and their wiring practices?
by winston_1. 04/23/19 02:34 PM
Welded Copper Connections
by gfretwell. 04/19/19 04:46 PM
Israel
by annemarie1. 04/18/19 02:35 PM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 3 guests, and 16 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Photocell History #2994
07/31/01 11:20 PM
07/31/01 11:20 PM
electure  Offline
OP
Member
Joined: Dec 2000
Posts: 4,280
Fullerton, CA USA
Does anybody know when photocells came into common usage?? Subject came up when we were discussing a building that the guys said must be as old as I am (they really rub it in, those whippersnappers)

Work Gear for Electricians and the Trades
Re: Photocell History #2995
07/31/01 11:51 PM
07/31/01 11:51 PM
A
Anonymous
Unregistered

They were not a familiar thing in until the late 1960s in my part of the country.

This website seems to confirm a mid-1950s time frame for the invention: http://www.eskimo.com/~jrterry/photocontrols.html

Re: Photocell History #2996
08/01/01 07:25 PM
08/01/01 07:25 PM
electure  Offline
OP
Member
Joined: Dec 2000
Posts: 4,280
Fullerton, CA USA
Thanks, DSpark!
This is about the time frame I thought. I had to come in as a kid when the street lights went on, I can remember them coming on 1 by 1.
(although I'm not yet 50, these guys lay it on thick! Carriages, Flint & Steel lighting Gaslamps. All in fun)


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
RH1
RH1
California
Posts: 22
Joined: August 2009
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
254,588 Are you busy
190,795 Re: Forum
180,539 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.019s Queries: 14 (0.005s) Memory: 0.9490 MB (Peak: 1.0725 MB) Zlib enabled. Server Time: 2019-04-26 10:22:42 UTC