Oct 15, 14
After a long work week, you’re ready to visit your favorite, cozy and quaint restaurant. The service is pretty good, and the food is exceptional, but your attraction to this place has more to do with the ambiance. After an hour or so here, you completely forget about that stressful thing called a job. With a “switch” in settings, the weekend has officially begun.
Whether you’re going for a casual dinner or a more upscale meal, proper lighting plays a major role in your dining experience. The lighting in a restaurant affects many elements, including food presentation, mood lighting and overall gratification.
Oct 01, 14
Whether you have a teeny coop in the city or a larger barn for your birds of beauty, lighting is vital to the health and vigor of your poultry. Small amounts of lighting during brooding or excessive lighting during growth season may result in financial or production loss for owners. Controlling lumens, temperature and color temperature are essential for chickens. This means that without the proper lighting, chickens may produce fewer eggs or fail to gain weight in a timely manner. Poultry perceive light differently than we do. For instance, where we see a yellowish or white glow from a bulb, poultry perceive the light as red because of their intense sensitivity to UV rays. Incidentally, this red light has a longer wavelength which enters the skull and skin of the chickens, prompting them to lay eggs. In the past, incandescent lamps were often used for poultry lighting, but these traditional lights are now fading due to their short lifespans, increased heat, and higher energy costs. To ensure the health and productivity of your poultry, let’s break down a few alternative lighting options you may want to consider for your broiler house.
Jan 18, 13
Reflector bulbs are more than just floodlights and spotlights. Like any light bulb, they come in shapes and technologies to fit any application. Two cases in point are the PAR and the MR16. These common bulbs, whether halogen, CFL, or LED, are highly specified, containing engineered surfaces that control the beam of light to an angle so precise it takes seven different classifications just to explain their possible uses!
Very Narrow Spot (VNSP)
The very narrow spot is just like it sounds. At 7 degrees or less for an MR16 or 15 degrees or less for a PAR lamp, this reflector casts an intense, focused beam without a square inch of wasted light. Bulbs with a VNSP beam angle are often used to highlight a small statue or figure on display in a museum or in a jewelry store to make diamonds “pop.”
Narrow Spot (NSP)
Photo by RBerteig (flickr)
Like the very narrow spot, the narrow spot is most popular in commercial applications. At 8 to 15 degrees for an MR16 or 16 to 30 degrees for a PAR lamp, the reflector casts a beam slightly less focused than a VNSP. Look for bulbs with an NSP beam angle in retail settings highlighting a special or sale item or in landscape bullets illuminating a sign or garden feature.
The spot, though primarily used in commercial applications, also shows up in homes from time to time. At 16 to 22 degrees for an MR16 or 31 to 60 degrees for a PAR lamp, the reflector casts a medium-sized beam. Bulbs with an SP beam angle are used in stores to highlight a special or sale area or outdoors to illuminate an architectural feature.
Narrow Flood (NFL)
Photo by ell brown (flickr)
Businesses and homeowners alike find uses for the narrow flood. At 23 to 32 degrees for an MR16 or 61 to 90 degrees for a PAR lamp, this reflector casts a medium-wide beam. Stores use an NFL beam angle to highlight a display table, while homes might use this bulb in recessed eyeball lights to illuminate a painting over a fireplace mantle.
This true “floodlight” has wide variety of applications. At 36 to 45 degrees for an MR16 or 91 to 120 degrees for a PAR lamp, the reflector casts a wide beam. Bulbs with an FL beam angle can be seen in everything from pendant lights in coffee shops to recessed lights in living rooms.
Wide Flood (WFL)
Need a lot of light? There are worse options than the wide flood. At 46 to 59 degrees for an MR16 or 121 to 160 degrees for a PAR lamp, the wide flood has a dispersed beam to cover a large area. Bulbs with a WFL beam angle are common in many general illumination applications from motion-sensing lights above garage doors to recessed cans in auditoriums and movie theaters.
Very Wide Flood (VWFL)
Photo by mccun934 (flickr)
The very wide flood finds its way into specialty applications, more often than not. At over 60 degrees for an MR16 or over 160 degrees for a PAR lamp, this reflector casts an extremely wide beam. Bulbs with a VWFL beam angle are used to illuminate without highlighting any particular object or area. They’re good options for outdoor flood lighting and low-ceiling recessed lights.
Keep in mind these designations vary slightly from manufacturer to manufacturer. Some brands, like Ushio, throw them out altogether for their simpler system of “narrow,” “medium,” and “wide.” Also note that just because a bulb may have a commercial application, that doesn’t mean you can’t use it in your home. Use reflectors to make your walls a canvas for your lighting ideas, and be sure to share those ideas with us on Facebook, Twitter, Google Plus, or Pinterest!
Aug 24, 12
In last week’s article, we discussed one major part of emergency lighting: Exit signs. In this week’s article, we’ll discuss the second part: Emergency lights. A note before you continue: Try not to confuse the terms “emergency lighting,” an overview of the entire topic, with “emergency lights,” a special light that comes on in the event of an emergency or power failure.
Like exit signs, emergency lights are a complex topic, yet also like exit signs, the regulations dealing with emergency lights come down to the same two important documents: OSHA 29CFR and NFPA 101, also known as the Life Safety Code.
The portion of OSHA 29CFR dealing with emergency lights (1910.37(b)) is relatively vague. It simply states, “Each exit route must be adequately lighted so that an employee with normal vision can see along the exit route.” NFPA 101, on the other hand, is much more specific. In section 22.214.171.124, it states:
- The emergency light must provide illumination for no less than 1-1/2 hours.
- The initial illumination of the emergency light must be an average of 1 footcandle (10.8 lux).
If you are unfamiliar with footcandles, essentially what the NFPA’s requires is that the light cast on any one square foot of an exit pathway must be equal to one lumen or more (a footcandle is equal to one lumen per square foot). This is something you’ll need to consider when choosing your emergency lights and why many of our lights include photometric charts. An emergency light with typical 5 watt tungsten heads may be appropriate for typical applications, but in many cases, you may need one with Halogen heads or even a special high wattage emergency light.
NFPA 101 also includes specific language about testing your emergency lights. Section 7.9.3 states:
- A hard-wired emergency light must be tested monthly for a minimum of 30 seconds.
- A fully battery-operated emergency light must be tested yearly for a minimum of 1-1/2 hours.
For the sake of convenience, not to mention safety, we highly recommend using self-testing emergency lights. These units continuously monitor the input voltage to the fixture as well as the condition of the battery backup. Should the fixture fail a test, an indicator light will signal that it needs to be serviced. At that point, you can choose whether you need to troubleshoot the input power, replace the emergency light battery, or replace the fixture altogether.
Items not covered in NFPA 101 but still worth considering include remote capability, emergency ballasts, and aesthetic considerations. Remote capability allows you to connect multiple emergency lights, exit signs, or remote heads together, which will all trigger in the event of an emergency. Emergency ballasts keep fluorescent lights operational in the event of a power failure. Finally, you may want to consider the color and style of the emergency light you choose; after all, it will become a part of your décor.
If you have questions or comments about emergency lighting, be sure to let us know in the comments section. You can also connect with us on Facebook, Twitter, or Google Plus!
Aug 17, 12
Are you opening a new business or planning a shiny, new remodel of an existing place of business? One of the things you’ll have to consider—whether you want to or not—is emergency lighting.
There’s good news, however. Despite being a technical subject, federal guidelines on emergency lighting boil down to the contents of only two key documents: OSHA 29CFR and NFPA 101. If those sound like challenging reads, they are, but this introductory article should help you get started.
Because this is a relatively large and technical subject, we’ll be splitting it into two parts: The first part, which you’ll read today, deals with exit signs, while next week’s article will deal with emergency lights.
Let’s start with a question: How many exits does your place of business have? Every one of those exits will need an exit sign. The requirements here are simple. The exit sign must legibly state the word “EXIT” in letters at least 6 inches high and with a 0.75 inch stroke. (29CFR 1910.37(b)(7)). That’s easy; in fact, you would be hard-pressed to find an exit sign in the United States that doesn’t meet those requirements.
Unfortunately, that’s the only easy part. There’s no point in having an exit sign if your employees can’t see it, is there? Your exit signs must be fully illuminated, either by an external light source or by internal illumination. Save yourself some trouble here and go with internal illumination. Using an external light source requires a whole new list of rules that, trust us, you don’t have time for. Besides, with all the pre-approved, self-luminated exit sign options available—LED, Tritium, even photoluminescent (glow-in-the-dark)—why would you use anything else?
Though a little light goes a long way, even with the brightest exit sign, you’ve still got the problem of corners, hallways, and winding corridors. OSHA also requires that, unless the exit sign is in plain sight from every point in the building (good luck with that) you’ll need additional signs with arrows that point the way the door (29CFR 1910.37(b)(4)). Fortunately, most every exit sign available today does double-duty as both an exit sign and a directional sign. To make your exit sign a directional sign, simply punch out the “chevrons” on either side of the unit and mount the sign to point in the appropriate direction. Only in very high-end “designer” exit signs will you need to order a special unit with pre-applied or glass etched directional arrows.
Speaking of “designer,” there’s no problem with injecting some aesthetic sensibility into your emergency lighting. Typical white thermoplastic exit signs work fine on white or off-white walls, but with darker walls (movie theaters being an obvious example) black thermoplastic units look much better. If you run a hotel or an upscale retail store, a unit with a brushed aluminum face or even an elegant edge-lit glass exit sign is a better option. Plus, with any LED exit sign you’ve got the choice of red or green letters.
Be sure to subscribe to our RSS feed so you don’t miss part 2 of this series next week! While you wait, you can also follow us on Facebook, Twitter, and Google Plus.