30-40 FOOTCANDLE PHOTOCELL 120V
- Thread starter kjrise
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hbiss
EC, Westchester, New York NEC: 2014
- Location
- Hawthorne, New York NEC: 2014
- Occupation
- EC
Re: 30-40 FOOTCANDLE PHOTOCELL 120V
Ummm, how about covering the window with something like a piece of window tint film? That comes in various densities and a scrap can be had for free.
-Hal
[ January 19, 2006, 05:01 PM: Message edited by: hbiss ]
Ummm, how about covering the window with something like a piece of window tint film? That comes in various densities and a scrap can be had for free.
-Hal
[ January 19, 2006, 05:01 PM: Message edited by: hbiss ]
electricman2
Senior Member
- Location
- North Carolina
- Occupation
- Retired Electrical Contractor
Re: 30-40 FOOTCANDLE PHOTOCELL 120V
Just out of curiosity, what is the application?
Just out of curiosity, what is the application?
Re: 30-40 FOOTCANDLE PHOTOCELL 120V
I once built a lighting system with four stages based on lighing level outside.
Sign first, a few lights, then more lights, then high dollar lights last.
We had to use low voltage controls and relays. All available off the shelf. Not sure if I still have a drawing. We could not find 120 volt parts either.
I once built a lighting system with four stages based on lighing level outside.
Sign first, a few lights, then more lights, then high dollar lights last.
We had to use low voltage controls and relays. All available off the shelf. Not sure if I still have a drawing. We could not find 120 volt parts either.
mdshunk
Senior Member
- Location
- Right here.
Re: 30-40 FOOTCANDLE PHOTOCELL 120V
I've sometimes had to color the "window" of the photocell with a black sharpie marker. It just leaves a black translucent film, sort of like window tint. I know that's not exactly calibrated to 30-40 footcandles, but I thought I'd pass that tip along anyhow. It has helped me out of a jam a few times when the photocell was located in a bad spot, receiving reflected light from the fixtures due to white painted surfaces nearby.
I've sometimes had to color the "window" of the photocell with a black sharpie marker. It just leaves a black translucent film, sort of like window tint. I know that's not exactly calibrated to 30-40 footcandles, but I thought I'd pass that tip along anyhow. It has helped me out of a jam a few times when the photocell was located in a bad spot, receiving reflected light from the fixtures due to white painted surfaces nearby.
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