Difference between R17 and R14 bulbs?


Old 11-23-08, 08:56 AM
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Join Date: Dec 2000
Location: Florida
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Difference between R17 and R14 bulbs?

After searching long and hard, I finally found bulbs that fit our wall unit.

They look identical to the old bulbs, fit fine and are 25 Watts just like the others.

A closer look and the unit lists the required bulb type as R17 and I noticed on the package that these new bulbs are R14.

I am not sure if its like other units that say max 100 Watts. Although it recommends no more than 100 Watt bulbs any other less bulb works just fine.

What is there a difference between a R17 and R14 bulb?
Is there some type of hazard by using a R14 bulb within an R17 unit?
Old 11-24-08, 04:23 PM
Join Date: Apr 2007
Location: Near Buffalo, NY
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The letter designates the lamp as a "reflector". The number after the letter is the diameter, in 1/8ths of an inch. The R14 is 1 3/4 inches in diameter, the R17 is 2 1/8.

There is no hazard as long as you don't exceed the recommended wattage at the correct voltage. Both are widely used in home entertainment cabinets, wall cabinets, and other display cabinets around the home.

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