What does R20 mean on a light bulb?

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. R/BR20 LED Replacements B/R20 bulbs are some of the best applications for LED due to their directional nature.

What is a 20 watt CFL equivalent to?

100W incandescent
The higher the wattage, the higher the running cost. The light output from a 20W CFL isn’t the same as that from a 20W incandescent. Rather, a 20W CFL would be the equivalent of a 100W incandescent (roughly 20%).

What is the difference between BR20 and R20?

Don’t worry about it because the two are interchangeable! R20 is the name for the incandescent bulb while BR20 is the name used for LED bulbs. In case you were curious, “BR” is short for “bulged reflector” which means the back of the bulb is a reflector and the front of it is bulged out.

Can CFL bulbs be used with dimmers?

Q: Are all CFL bulbs dimmable? A: No. The majority of CFL bulbs sold today are not dimmable. A CFL bulb that cannot be used on a dimmer will have the statement “not for use with dimmers” or “do not use with dimmers” marked directly on the bulb.

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 the R stand for 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.

Which is brighter LED or CFL?

CFL’s or fluorescent light bulbs emit 60 lumens per watt. LED’s, however, are the most effective of all, with a whopping 72 lumens per watt. This means that for around 10 watts of power, an LED will be just as bright as a 60-watt bulb.

How can you tell if a CFL is dimmable?

Maybe. Only some CFL bulbs are dimmable. The package or bulb should say if it’s dimmable and tell you which dimmer switches are compatible. You may get varying results with different CFLs and their compatible dimmers.

What happens if you put a non-dimmable bulb in a dimmer?

If you install a non-dimming LED bulb in a circuit with a dimming switch, it will likely operate normally if the dimmer is at its 100% or fully on. Dimming the bulb, will likely cause erratic behavior such as flickering or buzzing and ultimately may cause damage to the bulb.