CRI STANDARD FOR SITE LIGHTING?
CRI STANDARD FOR SITE LIGHTING?
(OP)
I would like to know what is the commonly used CRI by any standards? Is CRI> 85 fir site lighting is too much to ask.
Can some one refer me as to where I can look this up?
Can some one refer me as to where I can look this up?






RE: CRI STANDARD FOR SITE LIGHTING?
Put in whatever CRI source you like.
RE: CRI STANDARD FOR SITE LIGHTING?
RE: CRI STANDARD FOR SITE LIGHTING?
When CRI [Color Rendering Index] exceeds 80, it is usually used for bringing up the colors like in a meat department in a grocery store or clothing store etc.
The higher the CRI, it gets much costlier and normally these warmer lamps are used for interior applications only.
The original question was whether it is worth going for a high CRI for something like a parking lot etc.. and pay a much higher price?
I have no access to ASHRAE-90.1 to find out what it recommends for site lighting>
RE: CRI STANDARD FOR SITE LIGHTING?
What you should decide is how important it is for you to be able to tell the color of whatever it is you are lighting and how much light you will need. If for example you are lighting a building facade with advertising or corporate logos, then you should use an MH fixture with a CRI of 85 or so. If the colors are mostly greens and blues, then a lower CRI will suffice. It really does bring the "Design" part of lighting design to the fore.
Good luck with your search.
RE: CRI STANDARD FOR SITE LIGHTING?
Don Phillips
http://worthingtonengineering.com