The numbers in c7 and c9 are their diameters so that naturally means that c9 bulbs are larger than c7.
C7 vs c9 bulb size.
C9 christmas lights on the other hand utilize bulbs starting from 7 watts and up to 9 watts.
C9 s use e17 cords.
E12 cords commonly used with c7 bulbs are seen all year as well but also especially at christmas.
B10 c7 c9 c15 ca10 from top left to bottom right.
C9 lights have the same traditional strawberry shape as c6 and c7 but are slightly larger than c7.
C7 bulbs are the smaller than c9s.
E26 is most commonly seen lighting across large spaces like patios beer gardens and amusement parts.
C7 bulbs are smaller than c9 bulbs by 1 inch.
The c7 lamp base size is different than the larger old fashioned christmas bulb which is called a c9 and is over three inches long.
Choose a cord based on the size of the threaded base on each bulb.
Here are a few to keep in mind.
The b and c groups.
There are a few notable differences between c7 christmas light bulbs and c9 bulbs that you should understand when deciding which one would work best for your intended holiday lighting application.
The image below compares our g50 bulbs in all three base sizes.
The first thing to note is that the wattage of an incandescent bulb varies by size and by the length of the string.
All of the bulbs in these groups resemble the shape of a candle flame and are often referred to as candle bulbs.
G50 s are round bulbs and the 50 is their diameter in millimeters which is 1 7 8 inches.
C9 lights measure 1 1 4 inches in diameter and 2 1 2 inches tall.
C9 christmas light bulbs on the other hand feature a bigger e 17 intermediate size base.
B10 led bulbs in wall sconce ca10 led bulbs in chandelier c9 led bulbs in christmas light strings c7 led bulb in night light.
E17 cords used many times with c9 bulbs are seen all year but especially at christmas.
The have an e12 candelabra base the same size as a night light.
C9 bulbs will only work in an intermediate base.
A c9 does not fit into a candelabra socket but has its own.
C7 bulbs are 2 inches long and c9 bulbs are 3 inches long.
C7 s use e12 cords.
C9 christmas light bulbs usually come in 5 watts although some are 7 watts.
In led modification c7 christmas bulbs are usually 0 96 watt.
The image below compares our g40 and g50 bulbs in c7 and c9 base sizes.
Photo showing their relative sizes.