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M-400?
Ok heres a light near my house. Now im not sure if this is the split door version or the powr/door? Info Needed!
These Lights are all over Holyoke with the screw latch
Keywords: American_Streetlights

M-400?

Ok heres a light near my house. Now im not sure if this is the split door version or the powr/door? Info Needed!
These Lights are all over Holyoke with the screw latch

028.JPG 059~0.JPG 026~1.JPG 2011-08-02_11-34-47_343.jpg DSC05795.JPG
File information
Filename:026~1.JPG
Album name:Antstar85 / New England Lights
Keywords:American_Streetlights
Company and Date Manufactured:GE
Model Number:M-400A
Wattage:250
Lamp Type:HPS
Filesize:376 KiB
Date added:Aug 02, 2011
Dimensions:2688 x 2016 pixels
Displayed:133 times
Color Space:sRGB
DateTime Original:2011:08:02 16:27:10
Exposure Bias:0 EV
Exposure Mode:0
Exposure Program:Program
Exposure Time:1/160 sec
FNumber:f/9.7
Flash:No Flash
Focal length:16.5 mm
ISO:50
Light Source:Daylight
Make:Hewlett-packard
Max Aperture:f/2.8
Model:HP Photosmart M537
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=7671
Favorites:Add to Favorites

Comment 1 to 17 of 17
Page: 1

GullWhiz   [Aug 02, 2011 at 09:15 PM]
A new mystery LOL...I think its most likely a Splitdoor....the member NiMo on this site knows the best...but because no big latch, it has to be a split door.....
Antstar85   [Aug 02, 2011 at 09:19 PM]
Very Interesting! That picture of the light I thought was a M-400A has the same setup. I always thought the vent meant the ballast was mounted on the door but I dont know now. Im guessing this light is from the 70's
NiMo   [Aug 02, 2011 at 10:09 PM]
That's actually an earlier powr/door luminaire. The safety latch did not appear on these until the late 1970s. So this one is pre-1977.
GullWhiz   [Aug 02, 2011 at 10:20 PM]
Really??? NiMo without you...we would be totally wrong or clueless...you have been HELPFUL! Now let me ask you NiMo, what about the designs with only the clip and no screw? Maybe we need more pictures and details on those GE fixtures! I mean actual pictures! I did not know that those with only screw and without the latch can also be Powerdoors! Just learned something new here!

What about the smaller GE M-250A1s? I have a door itself but no latch only the screw and it dates to June 1976...what about those?
NiMo   [Aug 02, 2011 at 10:27 PM]
OK, the entire Powr/Door series started at the same time the "torpedo" shaped M-series got its facelift in 1965 with the M400A1. The original A1 had the unvented door, deep refractor, and no safety latch. In the early 70s, vent holes started appearing on the ballast doors and a smaller luminaire the M250A1 was rolled out. At the same time, the venerable M-series was replaced with the M400 (split door) and the M250R1. The M1000 underwent major changes to its upper housing including: Reflector redesign, slipfitter redesign (making it necessary to redesign the upper housing as well, and ballast mount redesign. I believe the vent holes appeared on the original split door luminaires, but I think was more cost effective to make a plain door.
Antstar85   [Aug 02, 2011 at 10:42 PM]
Wow Thank you NiMo for clearing this up for me! I never new that they made both until today. I have learned alot about ge fixtures in the last to days!
GullWhiz   [Aug 02, 2011 at 10:46 PM]
By the way I noticed you typed on the description "powerbracket"

Not a powerbracket but a powerdoor (or in trademark terms the Powr/door)

The Powerbracket looks like those!
Antstar85   [Aug 02, 2011 at 11:04 PM]
Oops!! I didn't even realize I did that. I always refered to them as powr/door I don't even know what I was thinking... Lol
GullWhiz   [Aug 02, 2011 at 11:05 PM]
Maybe overexcited that you learned new things that you were sooo happy you weren't thinking...Don't worry I often get a lot of that in new members. It's a great feelin' eh?! Laughing Wink
Antstar85   [Aug 02, 2011 at 11:06 PM]
I'm going to correct that right now! I never thought that I was missing out on so much! This is very exciting!
Mercuryvapor123   [Oct 29, 2011 at 02:57 PM]
If you read the instruction sheet for my M-400A in my gallery you'll see that only the fixtures for the LUCALUX hps lamp have both the screw and lach while the ones for mercury only have a screw.
streetlight98   [Oct 29, 2011 at 03:19 PM]
Actually, this COULD be a split door version. My M-400 split-door has vent holes and a screw instead of a latch. It's from March 1973.
Antstar85   [Oct 29, 2011 at 04:39 PM]
These are powr/doors, I've seen the door assembly open and the ballast are on the door.
streetlight98   [Oct 29, 2011 at 05:51 PM]
Then why'd you ask? Razz
joe_347V   [Oct 29, 2011 at 05:57 PM]
That was when he wasn't sure what they were. Razz
GullWhiz   [Oct 29, 2011 at 06:02 PM]
Plus we all have noticed his area seems to be a BIG fan of powerdoors....I mean AE powerdoors too.......so at that time of installations, all their fixtures were powerdoors!!! So we confirmed it's powerdoor!
Mercuryvapor123   [Oct 29, 2011 at 07:02 PM]
Wink

Comment 1 to 17 of 17
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