Christmas Lights FAQ

How many light strings can I put together?

According to Underwriters Laboratories, there should be a maximum of 210 watts connected on 22 gauge wire and a maximum of 420 watts connected on 20 gauge wire. Since each bulb and string has different wattage, calculate your total to see how many strings you can connect.

Do LEDs really stay cool to the touch?

Yes, LEDs are cool to the touch due to advanced technology.

What's the difference between incandescent bulbs and LEDs?

LEDs are a more modern technology and more efficient, thus saving energy. LEDs cost more but they are an investment, so incandesecent bulbs are not cheaper in the overall scheme of savings.

What is the difference between C7 and C9 bulbs?

C9s measure just under 3", while C7s are just over 2", base to tip. The bulbs are similar in look, though C9s are used for a retro appearance while C7s are more modern.

How many lights should I use for my project?

Consult the Light Calculation page to find a rough estimate of how many bulbs you will need per foot of tree.

Will the string still work if one bulb blows out?

If one bulb is broken but the shunt is in tact, the rest of the light string will work; however, if the bulb and shunt are damaged, the entire light string will loose current flow and thus darken.

How can I find the faulty bulb with the broken shunt?

For in-depth troubleshooting tips, consult the page Testing for Faulty Bulbs.

What does _____ mean?

Consult the Christmas Lights Glossary for commonly used terms on Christmas Lights, Etc.

How much energy do my lights use?

Consult the Christmas Lights Power Consumption page to easily calculate how much energy your particular Christmas lights use.

How do you hang Christmas lights?

We have many tricks and tips available on Christmas Lights, Etc for ease of decorating. To learn how to hang Christmas lights like a pro, visit the Hanging Christmas Lights page.

Can I cut rope light?

Yes, you can cut rope light at specified cut lengths determined by the manufacturer and symbolized by dashed lines or a scissor outline. For more information, consult the Rope Light Instructions page.