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Series Incandescent Gumballs Lit

The regulator is on the pole on right. From right to left: A 12 to 4 kV stepdown trans, the oil switch, the reg. PC is on low arm.

COL_20161030_182935.jpg DSC02309_Paralta_Equip_Co_Barricade_Light.JPG CIMG5775.JPG CIMG2455.JPG CIMG9406.JPG
File information
Filename:CIMG5775.JPG
Album name:rlshieldjr / Streetlights
Keywords:American_Streetlights
Filesize:74 KiB
Date added:Apr 24, 2014
Dimensions:800 x 539 pixels
Displayed:5223 times
Color Space:sRGB
Contrast:0
DateTime Original:2014:04:22 19:46:24
Exposure Bias:0 EV
Exposure Mode:0
Exposure Program:Program
Exposure Time:1/30 sec
FNumber:f/4.7
Flash:No Flash
Focal length:15.3 mm
ISO:800
Light Source:Unknown: 0
Make:Casio Computer Co.,ltd.
Max Aperture:f/4.7
Model:EX-Z9
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=17371
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Comment 1 to 8 of 8
Page: 1

joe_347V   [Apr 24, 2014 at 07:14 AM]
joe_347V
Nice! I don't think we ever had series here, the old incandescent gumballs we had were all multiple.

yuandrew   [Apr 24, 2014 at 08:32 AM]
yuandrew
Walnut Street south of Valley Blvd ?

traffic light1   [Apr 26, 2014 at 12:23 AM]
traffic light1
Wow! Now that looks nice!

James M   [May 05, 2014 at 12:11 AM]
James M
I'm surprised they're still using Incandescents for street lighting there? WOW! talk about vintage!

streetlight98   [May 05, 2014 at 01:30 AM]
streetlight98
My guess is that they probably can't afford the cost to upgrade. induction and LED fixtures aren't available for series circuits so they'd have to completely rewire everything. though a fellow lightign enthusiast has taken his lighting passion to work with him and created a device that goes from series to 120V so regular LEDs can be used with series circuits using these transformers.

joe_347V   [May 05, 2014 at 06:02 AM]
joe_347V
Yeah, I believe only HPS and mercs had series ballasts made for them but yeah, if you use that device (it's probably a isolation transformer) that Mike mentioned. LEDs and low watt (regular 120v) HID ballasts would run on the series lines.

NiMo   [May 05, 2014 at 09:06 PM]
NiMo
Actually, an upgrade is possible without having to redo the wiring, conduit and foundations. It would require utilizing the existing wood poles and installing 12 or 15 foot arms and overhead wiring. Then the old system can be completely pulled out. Potters Rd. in Buffalo had series incandescent post tops until the early 1980s when 150 watt HPS luminaires were mounted on 8 foot arms off of the existing wood poles. There is a stretch where new steel davits had to be installed, though.

rlshieldjr   [May 10, 2014 at 03:21 AM]
rlshieldjr
@ Yuandrew, yes, Walnut looking north to Valley.


Comment 1 to 8 of 8
Page: 1