LED Christmas & Holiday Lights
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How many strings of LED Christmas lights can I connect end to end?

Underwriter's Laboratory or UL recently adopted a new standard for the end to end connection of LED Christmas lights. The new standard allows for the end to end connection of up to 216 total watts on one 15 amp circuit. The change of the standard from using the number of strings for the unit of measure to total watts is much more sensible since LED Christmas lights use much less energy than standard incandescent Christmas lights. We indicate on each of our product pages the estimated end to end connectability of each of our light strings.