What Is The Difference Between A Br30 And R30 Light Bulb

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What is the difference between a br30 and r30 light bulb. So a br30 is 30 8 inches or three and 3 4 inches. The base unit of any light bulb is 1 8 th of an inch. E g the diameter of a br 30 bulb is 30 8ths of an inch or 3 75 inches in diameter. The br30 was designed to replace the older r30 because it could use less watts while still getting the kind of light output that people needed.

So you can swap out a par30 for an r30 or a br30 they are all the same size. For 5 cans a br30 will fit with a little space to all sides while a br40 will fit with little to no space on the sides. The par denotes the light bulb has a parabolic aluminized reflector on its inside directing light out. Knowing this the formula is 1 8 th of an inch multiplied by the number shown after the bulb s category.

This is about the shapes and what they re used for. Though they bear some similarities understanding their differences will help you make better decisions about which one of these bulbs works best for your needs. This type of light bulb is a reflector flood and that is what the r stands for in the code. Br20 1 8 x 20 2 5 inches.

Br30 1 8 x 30 3 3 4 inches. Br is short for bulged reflector and the numbers 30 or 40 indicate size in 1 8ths of an inch. One of the frequent questions we come across is what the difference is between br30 and par30 light bulbs. The number represents increments of an 8th of an inch.

For 4 cans you cannot choose br40 bulbs they re too big. The difference between a br20 br30 and br40 is actually the size or diameter of the light bulb. For 6 cans a br30 may leave so much space between the bulb and trim that you don t care for the look though this is a personal choice. Par 20 30 and 38 and br or r 20 30 and 40 despite their similar names are quite different.

Their faces have the same width. So a 30 would be 3 3 4 dia. Er30 bulb with such a large beam angle br and r shape bulbs do well in situations requiring wall washing or wall grazing as track lights for large areas or artwork or providing general ambient lighting via recessed can lights. That par coating maximizes the light output that you ll get from the light bulb.

Lighting and application br30 light bulbs deliver soft edged directional light and can typically be found in general household light fixtures recessed can lighting and or track lighting. There are a couple things you should know when choosing between the two. And the 40 would be 5 dia. For example a br30 is 30 8ths of an inch or 30 divided by 8 which equals 3 75 in diameter.

To find the diameter of the lamp just divide the number after it by 8. You are more likely to find a slightly narrower beam angle for the smaller r20 and br20 bulbs while r30 and br30 bulbs could be either broadly designated as spot or flood lights. Br40 1 8 x 40 5 inches. The r30 is an old design for reflectors that aren t as energy efficient as something known as a br30 reflector.

An mr11 is 11 8 inches.