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FAQs About C7 & C9 Christmas Lights

C7 and C9 Christmas lights are the traditional looking lights seen on houses and businesses during the holiday season. These bright lights are highly noticeable, and they come in a variety of colors. But what exactly are C7 and C9 lights, and how are they used? These FAQs about C7 and C9 Christmas lights tell you more about these decorative lights.

What are C7 and C9 lights?

These lights are not as common as in the past, but they are still used as Christmas decorations. They are the traditional Christmas lights, and they are recognizable by their brightness and shape. C7 and C9 bulbs are a more durable bulb, and the failure of one bulb does not affect the other bulbs. They are used to decorate large trees and the outside of homes. SolarChristmasLights.com only offers LED Christmas Lights, which re smaller and more efficient than traditional C7 and C9 lights. 

Are there any differences between C7 and C9 lights?

The two bulbs vary in overall size, base size and wattage. C7 bulbs are about two inches long, and C9 bulbs are a little over 3 inches long. C9 bulbs have a higher wattage than C7 bulbs.

Are there rules about connecting C7 and C9 bulbs?

There are several rules to follow. Do not connect C7 and C9 bulbs of different wattage, and do not mix C7 and C9 bulbs in the same string of bulbs. If you are going to make a string of C7 or C9 lights, do not connect more than three strings in a series. The number of strings is limited by the capacity of the fuse plug.

Are there lower energy C7 and C9 bulbs?

C7 and C9 bulbs are both available in lower energy versions, and these low-energy bulbs decrease the amount of electricity used by 50 percent. The low-energy C7 lamps are 2.7 watts, and the low-energy C9 bulbs are 3.7 watts. The bulbs fit into existing C9 and C7 strings.

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