Last viewed - General Electric M400A PowrDoor Dayburner

File information
Filename:	IMG_6045b.JPG
Album name:	tpirman1982 / The Best of The Frangioso's Street Lighting Gallery
Keywords:	American_Streetlights
Company and Date Manufactured:	General Electric
Model Number:	M400A
Wattage:	400 watts
Lamp Type:	High Pressure Sodium
Filesize:	140 KiB
Date added:	Nov 23, 2012
Dimensions:	1600 x 1010 pixels
Displayed:	70 times
Color Space:	sRGB
DateTime Original:	2012:11:21 12:21:56
Exposure Bias:	0 EV
Exposure Mode:	0
Exposure Time:	1/500 sec
FNumber:	f/6.9
Flash:	No Flash
Focal length:	25 mm
ISO:	200
Make:	Canon
Max Aperture:	f/6.9
Model:	Canon PowerShot A1300
URL:	http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=13893
Favorites:	Add to Favorites

Comment 1 to 4 of 4

Page: 1

streetlight98

[Nov 23, 2012 at 05:44 PM]

Sweet! this is one of the first HPS M-400As!

NiMo

[Nov 24, 2012 at 04:35 AM]

Not really, the safety latch didn't start appearing until the late 70s.

streetlight98

[Nov 24, 2012 at 02:00 PM]

When were the first HPS cobraheads introduced? Was there one company that started making HPS before anyone else? My 400W MV M-400 seems to be an oddball. It has vent holes on the door and just a screw (no safety latch). Not until you open it up do you realize it's not an M-400A! It would definetly throw somebody off if they were looking at it from the ground.

NiMo

[Nov 24, 2012 at 11:01 PM]

General Electric's Powr/Door luminaires first appeared in the mid 1960s along with a new grey finish for their M-series single door luminaires. these new luminaires had a captive screw and no vent holes. The vent holes likely appeared in the early 70s and the safety latch appeared on all M400A1 luminaires in the late 1970s.

Comment 1 to 4 of 4

Page: 1

Gallery of Lights

General Electric M400A PowrDoor Dayburner

From Brockton, MA