Gallery of Lights


Home Login
Album list Last uploads Last comments Most viewed Top rated My Favorites Search
Home > User galleries > chapman84 > Duquesne Light street lights (removed from service)
General Electric M-250R 175 watt mercury vapor
Keywords: American_Streetlights

General Electric M-250R 175 watt mercury vapor

westinghouse_ov-15~3.jpg 7_8_2016_001.JPG general_electric_m-250r_175_watt_mercury_vapor_2.jpg 7_9_2016_003.JPG general_electric_m-250r1~0.jpg
File information
Filename:general_electric_m-250r_175_watt_mercury_vapor_2.jpg
Album name:chapman84 / Duquesne Light street lights (removed from service)
Keywords:American_Streetlights
Filesize:24 KiB
Date added:Jul 09, 2016
Dimensions:640 x 480 pixels
Displayed:127 times
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=20594
Favorites:Add to Favorites

Comment 1 to 7 of 7
Page: 1

chapman84   [Jul 02, 2017 at 11:38 AM]
Update: This light was replaced with a 70 watt high pressure sodium light last week.
HPSM250R2   [Jul 06, 2017 at 02:34 AM]
That's fine with me Very Happy
It's not LED.
ZarlogH46   [Jul 06, 2017 at 03:23 AM]
I am happy that it wasnt replaced with an LED either, but 70w HPS isn't going to be as effective as 175w MV unless the lamp is dimmed out.
chapman84   [Jul 08, 2017 at 02:30 AM]
They replaced another 175 watt mercury vapor light around here as well.
Antstar85   [Jul 09, 2017 at 02:25 PM]
70 watt HPS is a pretty close replacement to 175 watt MV. All our 175 watt MV fixtures are changed to 70 watt HPS at my work.
streetlight98   [Jul 09, 2017 at 10:32 PM]
70W to replace 175W MV? I guess if the lamp is really dim but IMO replacements should be based on the initial lumens since otherwise all the 100W MV lights in RI would've been replaced with 35W HPS lol. I've seen a lot of cases where NGrid will replace a MV with the same wattage HPS so they can keep billing the city for the same wattage. They do it all the time with 100W MV and sometimes with 400W MV too. I personally like it when they replace 100W Mv with 100W HPS since the orange light makes it harder to see. The extra lumens make up for the inability to see under the light. A brand new 100W MV lamp actually does a better job lighting the road than a 70W HPS and the 70W HPS is rated at 2300 lumens greater!

I wish they would have used 70W HPS widespread here instead of 50W HPS because 50W HPS is pretty useless. Granted, a lot of the 50W HPS lights here replaced 1000L incandescent lights so that was probably a great improvement in brightness but for 100W MV, 50W HPS doesn't cut it. Blackstone Valley Electric and Newport Electric (EUA) used 70W HPS but Narragansett Electric (NEES) used 50W HPS. Narragansett Electric was by far the largest utility in RI. BVE was a far 2nd and Newport Electric being the 3rd smallest. The absolute smallest would be Pascoag Utility District, which is a municipal utility in Burrillville, RI. Now of course all of RI (excluding Pascoag Utility) is National Grid. But the utility borders still stand for the most part between NEES and EUA cities and towns.
chapman84   [Jul 10, 2017 at 12:37 AM]
Duquesne Light only replaces mercury vapor street lights when the bulbs burn out since they don't order mercury vapor lamps anymore.

Comment 1 to 7 of 7
Page: 1