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Lighting at School
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Topic: Lighting at School (Read 25432 times)
Mike
Professional lighting engineer
Posts: 1226
This Image Brought to You by: McCann Lighting Co.
Re: Lighting at School
«
Reply #30 on:
November 27, 2011, 04:57:05 PM »
Exactly. There are tags on the lens-less wrap lights. Maybe i can try to look at one. I can almost make it out with my glasses, but not quite.... Possible taking a photo of the tag and zooming in on the image later will help me. You know how my camera is though.... The wraps do look like their from the 70's
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joe_347V
Administrator
Professional lighting engineer
Posts: 1038
Dat LPS...
Re: Lighting at School
«
Reply #31 on:
November 27, 2011, 05:24:21 PM »
Or if you catch someone replacing the ballast you could try to match it up with the ones on here.
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Mike
Professional lighting engineer
Posts: 1226
This Image Brought to You by: McCann Lighting Co.
Re: Lighting at School
«
Reply #32 on:
November 27, 2011, 06:32:35 PM »
All the ballasts have been retrofitted, so that wouldn't provide any info exept when the retrofitted them. The ballasts are isntant start, so they must not be origional since the public school department is way to cheap to have bought electronic ballasts on the 70's.
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joe_347V
Administrator
Professional lighting engineer
Posts: 1038
Dat LPS...
Re: Lighting at School
«
Reply #33 on:
November 27, 2011, 08:11:13 PM »
Then tags would be the best bet then.
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Mike
Professional lighting engineer
Posts: 1226
This Image Brought to You by: McCann Lighting Co.
Re: Lighting at School
«
Reply #34 on:
November 27, 2011, 09:06:39 PM »
I think the curved basket wraps are Holophane, since someone either here or on the L-G posted a pic of the exact same type.
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joe_347V
Administrator
Professional lighting engineer
Posts: 1038
Dat LPS...
Re: Lighting at School
«
Reply #35 on:
November 27, 2011, 09:20:54 PM »
Any soot marks inside the lumes, that's often a tell tale sign of older fixtures.
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Mike
Professional lighting engineer
Posts: 1226
This Image Brought to You by: McCann Lighting Co.
Re: Lighting at School
«
Reply #36 on:
November 27, 2011, 09:32:12 PM »
There's soot in the lensless wraps. The tags look 70's.
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joe_347V
Administrator
Professional lighting engineer
Posts: 1038
Dat LPS...
Re: Lighting at School
«
Reply #37 on:
November 27, 2011, 09:36:05 PM »
You can also approximate a fixtures date from looking at the UL logo too.
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Mike
Professional lighting engineer
Posts: 1226
This Image Brought to You by: McCann Lighting Co.
Re: Lighting at School
«
Reply #38 on:
November 27, 2011, 09:38:47 PM »
IIRC, the tag is metal with blue ink. If there's a bad ballast, it's fixed, but if the socket melts, etc, it's replaced. i only know of one wrap in the whole building that's been replaced. It was in the muic room hallway.
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joe_347V
Administrator
Professional lighting engineer
Posts: 1038
Dat LPS...
Re: Lighting at School
«
Reply #39 on:
November 27, 2011, 09:48:22 PM »
Hmm I've never seen a fluorescent fixture with metal tags before, must be a older fixture.
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Mike
Professional lighting engineer
Posts: 1226
This Image Brought to You by: McCann Lighting Co.
Re: Lighting at School
«
Reply #40 on:
November 27, 2011, 09:51:08 PM »
I THINK they're metal.... The tags are on the side of the fixtures on the left.
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joe_347V
Administrator
Professional lighting engineer
Posts: 1038
Dat LPS...
Re: Lighting at School
«
Reply #41 on:
November 27, 2011, 10:01:25 PM »
Well if the tags were paper they would most likely have yellowed by now.
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Mike
Professional lighting engineer
Posts: 1226
This Image Brought to You by: McCann Lighting Co.
Re: Lighting at School
«
Reply #42 on:
November 27, 2011, 10:15:10 PM »
I don't remember that clearly since i pass the tags very quickly most of the time.... I'll check tomorrow and maybe i'll get some pics!
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joe_347V
Administrator
Professional lighting engineer
Posts: 1038
Dat LPS...
Re: Lighting at School
«
Reply #43 on:
November 27, 2011, 10:21:54 PM »
Well of course a pic would be better.
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Mike
Professional lighting engineer
Posts: 1226
This Image Brought to You by: McCann Lighting Co.
Re: Lighting at School
«
Reply #44 on:
November 28, 2011, 03:30:12 PM »
I got pictures!!!! The good news is I didn't get get caught.
The bad news is that my selection is limited and i was unable to get a good shot of the label.
It turns out it IS metal, but it's black ink, not blue. The only part I had time to read was either "PRIMELITE" or "PRIMALITE". I'll do the best I can to write down whatever else I can read, but becuase of shadows, I can't get a pic of the tag. I did get a pic with a tag in the pic, but it's unreadable from the pic.
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