What is an R bulb?
“R” stands for Reflector which means light bulbs that contain a built-in reflecting surface that maximizes the direction of the light the lamp emits. Reflector light bulbs are used mainly in recessed cans for hotels, restaurants, retail and residential lighting.
What does PAR mean in a lightbulb?
parabolic aluminized reflector
PAR stands for “parabolic aluminized reflector.” These bulbs have a lamp, reflector, and pressed lens inside the lamp to provide directional lighting. They have a shorter body than BR light bulbs with a bowl shape. PAR light bulbs have soft light, but with a more defined edge than BR bulbs.
What is the PAR value of a bulb?
PAR, which stands for Parabolic Aluminized Reflector, bulbs produce about four times the concentrated light intensity of general service A shape bulbs and are ideal for recessed and track lighting. Like all light bulbs, the numbered value (i.e. PAR 20 and PAR 30) represents the diameter of the bulb in 1⁄8 of an inch.
How are PAR bulbs measured?
The second variable is a numerical value which represents the diameter from the widest point of the bulb measured in eighths of an inch. For example, if we divide a PAR16 by an eighth of an inch the diameter from the widest part of the bulb would equate to 2-inches….PAR Light Bulb Shapes.
| Shape | Diameter in Inches |
|---|---|
| PAR64 | 8 |
Is R30 the same as BR30?
So this long answer is to say that a BR30 bulb is a replacement for the older R30 bulb. It stands for the diameter of the bulb in 1/8 inches. So the 30 means the diameter is 30/8 inch or 3 3/4 inches. The R is an older designation for “reflector” meaning the type of recessed light bulb.
What is par Lighting size?
The most common sizes of PAR bulbs vary in size from PAR16, PAR20, PAR30, PAR36, and PAR38. LED PAR bulbs provide a dimmable, bright light that requires less energy to operate….Breaking Down the Terms.
| PAR Bulb Number | Bulb Diameter |
|---|---|
| 20 | 2.5 inches |
| 30 | 3.75 inches |
| 36 | 4.5 inches |
| 38 | 4.75 inches |
Are par30 and PAR38 interchangeable?
1 Answer. First the good news: Electrically it would be fine as long as the PAR38 bulb’s wattage does not exceed the receptacle’s maximum wattage.
Why are par meters so expensive?
All PAR meters are made with a sensor that counts individual photons (“particles” of light). Better filters and sensors typically cost more and so increase the price of the PAR meter. Because no filter material or sensor is perfect, these meters are calibrated to “average” light spectra, such as natural sunlight.
What can a PAR 46 light bulb be used for?
PAR 46 bulbs measure 5.75 in diameter and can be used for highly technical commercial applications where accurate and reliable lighting is paramount. Read more… Possible uses for the PAR 46 bulb include truck headlights, traffic lights, aircraft landing lights, emergency lights and military lights.
How many hours does a Whelen par-46 light last?
Lightweight, low-current and water resistant, they provide stable light output for thousands of operating hours. The Whelen PAR-46 Replacement LED Spotlights are rated to last 50,000 hours and provides an unbelievably bright light.
Can a Whelen PAR 46 be used in a unity spotlight?
The Whelen PAR-46, was a direct replacement for the incandescent lamp in a Unity spotlight. The Unity is mounted on a 2008 Ford Crown Vic P71. Installation took approximately five minutes using Phillips and flat head screwdrivers. Simply remove the bottom screw, take off the retaining ring and remove the incandescent lamp.