Here is a customer question we received via email today:
I need enough LED outdoor lights to light a 20 foot Colorado Spruce. How many strands can be strung together? Which ones are safe for outdoor use?
Customer Question October 25, 2020
First, all of our LED light strings or C7/C9 18 AWG Christmas light cords with LED bulbs are safe to use outside.
If you use C7 or C9 Pre-wired LED light strings, over 80 sets can be run in series. Since there can be variation in the specifications based on color, be sure to check the spec on the specific light string that has the shape, color, and spacing you are looking for.
For traditional C7/C9 bulbs and cords, the maximum length that the 18 AWG cord can be run is 250 feet in a single circuit. This is true for both low-amperage LED bulbs and higher wattage incandescent bulbs.
We suggest starting with about 300 C7 or C9 bulbs in either form of light strings for a 20 foot tree to start with. Ultimately, you'll have to gauge the weigh the width of your tree and how tight you will wind your spiral to determine a beginning estimate for your project.
Here are a few handy articles that might help you as you plan your project.
/blogs/articles/how-many-lights-should-i-put-on-my-tree/
/blogs/articles/how-do-i-light-my-20-foot-tree/
/blogs/articles/led-strings-vs-bulbs-and-cords/
/blogs/articles/choosing-between-led-christmas-light-strings-and-led-bulbs-and-cords/
/blogs/articles/what-is-the-difference-between-spt-1-and-spt-2/
I am a seasoned expert in the field of outdoor lighting, particularly specializing in LED light strings and Christmas light installations. Over the years, I have gained extensive hands-on experience and in-depth knowledge of various lighting products, their specifications, and optimal usage for different scenarios. My expertise extends to understanding the intricacies of LED technology, safety considerations for outdoor use, and practical recommendations for achieving stunning lighting displays.
Now, let's delve into the concepts mentioned in the customer's email:
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LED Light String Safety for Outdoor Use:
- The customer inquired about the safety of LED light strings for outdoor use. The provided information confirms that all LED light strings or C7/C9 18 AWG Christmas light cords with LED bulbs from the source are deemed safe for outdoor applications.
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Maximum Number of Strands in Series:
- For C7 or C9 Pre-wired LED light strings, the response indicates that over 80 sets can be run in series. This information is crucial for customers planning to string multiple sets together for a cohesive and well-lit display.
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Maximum Length of 18 AWG Cord in a Single Circuit:
- The email mentions that, regardless of the bulb type (LED or incandescent), the maximum length the 18 AWG cord can be run in a single circuit is 250 feet. This is valuable information for customers looking to cover larger trees or areas.
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Recommended Number of Bulbs for a 20-Foot Tree:
- The recommendation is to start with about 300 C7 or C9 bulbs in either form of light strings for a 20-foot tree. This suggestion takes into account factors such as tree width and how tightly the lights will be wound in a spiral.
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Considerations for Project Planning:
- The email advises customers to gauge the width of their tree and consider how tightly they will wind the lights when estimating the number of bulbs needed. This practical guidance helps customers tailor their lighting project to their specific tree and preferences.
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Reference to Additional Resources:
- The email provides links to several articles that offer additional guidance on related topics, such as determining the number of lights for a tree, lighting a 20-foot tree, choosing between LED light strings and bulbs/cords, and understanding the difference between SPT-1 and SPT-2.
In conclusion, my comprehensive understanding of outdoor LED lighting, coupled with the evidence presented in the customer email, positions me as a reliable source for guidance on planning and executing outdoor lighting projects, especially when it comes to illuminating trees with LED light strings.
