C9 Christmas Light Bulbs

Our transparent bulbs are sold in boxes of 25 in different solid colors and multi. These bulbs are compatible with any standard C9 Christmas light stringer with E17 sockets.   You can use your own if they are in good electrical condition or you can purchase them here.   

Commonly asked questions about these bulbs:

Are these breakable? Yes, these traditional incandescent glass bulbs. Be sure to order and extra box to account for breakage that naturally occurs during installation. Personal experience says that if kids are helping with your install, order two.

How many can I run on a single breaker? These bulbs are rated at 5W to 10 Watts. We suggest you not exceed 1000 watts per normal household breaker. 

Consult with a master electrician who can best advise you on how many light bulbs you can safely run on your breakers. Keep in mind that multiple outlets can be connected to the same breaker and this specification is per breaker - not outlet. Again, everyone knows an electrician or has one in the family. Invest in an hour of his or her time and pay to have them approve your design and keep that advice recorded for future projects.

About how long do these last? C9 bulbs last approximately 2000-3000 hours of use. Their lifespan will ultimately depend on your environment. Strong sunlight will fade these bulbs so keep that in mind as well. All of our bulbs are warranted for 90 days of seasonal use. Be careful when you store your bulbs for the season and consider keeping their original packing materials handy for storage.

Will these bulbs get warm? Yes, these are traditional incandescent bulbs and they produce light by heating a filament so they will warm up during operation.

Planning your project with C9 bulbs

1. Measure, as accurately as you can, the eaves of your roof allowing about 30% more than your horizontal measurement for the peak of your eaves. (If you live in a tudor, you may need to double your measurement - you are the one looking at your own roof. ) You might consider taking true physical measurements of your eaves and using one as a guideline for the others.

2. Decide the length of cords that will most easily work for your project.  Choose between 25, 50 or 100-foot C9 Stringers or a combination of them for your project. The 25 foot cords can be run 2 strings in series but our other cords come with just one plug.  We do carry 1000 foot spools - you'll need to speak to a master electrician about installing these cords because there are special guidelines for exceeding your breaker rating etc etc.)

For a standard residential breaker, do not exceed 200 C9 bulbs per breaker.  Run no more than 250 feet of 18 AWG wire no matter how many sockets are present. 

3. Pick your favorite color and build a theme. Remember last season, driving your neighborhood. Were you impressed with an all-red decor? How about blue? (I love the Winterland look of all-blue.)  Or how about the Christmas classic white? (clear transparent) Multi is also right up there with white as a perennial favorite. 

Want to celebrate a favorite sports team? Let the fact that our bulbs and stringers are sold separately, allow you to custom make your color combinations all year.

4. Check out our Installation Hardware for the latest in professional stakes and clips to finish your job right!

Decorating with Incandescent C9 Bulbs