PAR stands for “parabolic aluminized reflector” and is best used in settings that require a focused, narrow beam of light.
What is the difference between par 30 and par 38?
Now the bad news: PAR38 and PAR30 refer to the physical characteristics of the bulbs. PAR = Parabolic Aluminized Reflector, 38 = thirty-eight eighths of an inch, or 38*1/8″=4.75″. 30 = thirty eighths of an inch, or 30*1/8″=3.75″. As you can see, PAR38 has a larger diameter than a PAR30 bulb or can.
What does par in lighting mean?
PAR is photosynthetic active radiation. PAR light is the wavelengths of light within the visible range of 400 to 700 nanometers (nm) which drive photosynthesis (Figure 1). PAR is a much used (and often misused) term related to horticulture lighting. PAR is NOT a measurement or “metric” like feet, inches or kilos.
What is the difference between par 16 and par 20?
We mentioned that LED PAR16 Bulbs are the smallest in diameter of all the PAR Bulbs, and the PAR20 bulb is one size larger. While a PAR20 and a PAR16 Bulb can have the same base size, the dimension of the bulb is what differs. This is important when using existing fixtures because the fit might not be the same.
What is the difference between PAR20 and PAR30 light bulbs?
PAR20: 20 denotes, the exact measurement from brim to brim of LED lights, that is to say, 20/8 inch in diameter, approximately 64mm; PAR30 is standing for 30 denotes, 30/8 inch in length near to 95mm, PAR38.
What is the difference between par 38 and BR40?
PAR38 is a large reflector lamp with focused light. … The difference between a flood PAR38 and a BR40 is the cut off of light pattern. The flood PAR38 may provide a wide beam angle but not nearly as wide as a BR40 and also with a much more defined area of lighting.
What is the difference between BR and PAR bulbs?
BR (for bulged reflector) bulbs are lamps with “wide flood” beam angles, which means that they provide more than a 45 degree angle when lighting an area. PAR (short for Parabolic Aluminized Reflector) bulbs are available in these angles: Narrow spot, 5-15 degrees. … Wide flood beam, over 45 degrees.
What does PAR stand for?
|PAR||Performance and Accountability Report|
|PAR||Prevention and Restoration (violence integrative model)|
|PAR||Pixel Aspect Ratio|
What is a good par value?
So let’s talk benchmarks and the best PPFD/PAR range for your plants! Between 200-400 PPFD: This is great for seedlings, clones, and mother plants. Between 400-600 PPFD: This is great for early to late stage vegging cycles. Between 600-900 PPFD: This is great for the flowering, fruiting, or budding stage of plants.
How many lumens is a par 64?
What is a par 20?
What are PAR20 Bulbs? Parabolic aluminized reflector (PAR) 20 bulbs control light more precisely. They produce about four times the concentrated light intensity of general service A shape incandescents, and are used in recessed and track lighting. … Therefore, a PAR 20 is 2.5 inches in diameter.
What is a par 16 light bulb?
Parabolic aluminized reflector (PAR) 16 bulbs control light more precisely. They produce about four times the concentrated light intensity of general service A shape incandescents, and are used in recessed and track lighting. Like all light bulbs, the 16 value represents the diameter of the bulb in 1⁄8 of an inch.
What is PAR38?
What are PAR38 Bulbs? Parabolic aluminized reflector (PAR) 38 bulbs control light more precisely. LED PAR lights produce about four times the concentrated light intensity of general service A shape incandescents, and are used in recessed and track lighting. … Therefore, a PAR 38 is 4.75 inches in diameter.
Can I use BR30 instead of PAR30?
The number following the letters in a recessed light bulb indicates size: it’s the diameter of the light bulb in eighths of an inch. So, a BR30 is 30/8 inches, or three and 3/4 inches. An MR11 is 11/8 inches. So, you can swap out a PAR30 for an R30 or a BR30 – they are all the same size.
Can I use dimmable bulbs in non dimmable?
Dimming LED lamps can save energy and changes the visual appearance and mood of your space. You can use a dimmable LED lamp in a non-dimmable circuit. You should NOT use a non-dimmable lamp in a dimmable circuit as it may cause damage to the lamp and or circuit.
Can I replace BR40 with BR30?
The BR30 puts out 100 lumens less than the BR40. The BR30 fits the smaller fixture or the larger one. Smaller ones are good for the eyeball fixtures. I really see very little less light on the BR30.