What is the difference between R20 and R30 bulbs?
What is the difference between R20 and R30 bulbs?
All light bulb diameters are referred to in eighths on an inch, so if the diameter of your bulb is 20 eighths of an inch (2-1/2 inches), you’ll need an R20 CFL. If your bulb is 30 eighths of an inch in diameter (3-3/4 inches), you’ll need an R30 CFL, and so on.
What does R30 mean in light bulbs?
Reflector (R) bulbs put approximately double the amount of light (foot-candles) on the front central area as General Service (A) of same wattage. Like all light bulbs, the 30 value represents the diameter of the bulb in 1⁄8 of an inch. Therefore, a R30 is 3.75 inches in diameter.
What is the difference between BR30 and R30 bulbs?
The difference is simply the diameter of the bulb. R30 bulbs are the larger of the two bulbs. BR30 bulbs are actually the newer, more energy-efficient version of R20 bulbs and are the same size as R20s. R30 bulbs have a diameter of 3.75 inches, while BR30 bulbs have a diameter of 3.5 inches.
What does R20 mean on a light bulb?
Reflector (R) bulbs put approximately double the amount of light (foot-candles) on the front central area as General Service (A) of same wattage. Like all light bulbs, the 20 value represents the diameter of the bulb in 1⁄8 of an inch. Therefore, a R/BR 20 light bulb is 2.5 inches in diameter.
What does the R mean in light bulbs?
Reflector
“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. “PAR” stands for Parabolic Aluminized Reflector light bulbs. PAR is made using an aluminized reflector which is in a parabola shape.
Can you use BR30 instead of R30?
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 BR30 replace R30?
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. This also reduces the amount of heat generated by the bulb. So this long answer is to say that a BR30 bulb is a replacement for the older R30 bulb.
Are R and BR bulbs interchangeable?
What is the difference between Par and BR/R bulbs? Both kinds of bulbs are practically interchangeable, depending on your space and your lighting needs.
What are the 3 types of light bulbs?
There are three basic kinds of light bulbs on the market: incandescent, halogen, and CFL (compact fluorescent light).