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String lights

String Lights for Outdoor Events: Bulbs, Runs and Power

Plan string lights for a wedding or party: bulb shapes, LED vs incandescent, how many feet you need, connectable run limits, outdoor ratings and safe power.

Quick answer

Use outdoor-rated LED string lights for events: they draw a fraction of incandescent power, so far more strands can connect end to end, and they stay cool. Measure the space and multiply by about 1.5 for zigzag or swagged layouts. Support long spans with a guide wire, plug into GFCI-protected outlets, and never exceed the maker's maximum connected run.

String lights are the cheapest way to transform an outdoor space. Plan the layout and power before you buy.

Bulb shapes

Bulb Look
G40 globe (1.5 inch) Classic café string
G50 globe (2 inch) Larger, bolder
S14 Edison-style, vintage
Fairy and micro Fine wire for tables and backdrops

LED or incandescent

LED Incandescent
Power per bulb About 0.5 to 2 W About 5 to 11 W
Heat Cool to warm Hot
Strands per run Many Few
Breakage Often shatterproof plastic Glass
Color Choose warm white, about 2,200 to 2,700 K Naturally warm

How much you need

Layout Footage
Perimeter only Perimeter + 10 percent
Parallel runs Number of runs × length + 50 percent for swag
Zigzag Diagonal length × number of passes + 50 percent

Install and power

  • Run a steel guide wire for spans over about 20 ft and clip lights to it.
  • Use poles with weighted bases where there are no walls or trees.
  • Plug into GFCI-protected outdoor outlets and keep connections off the ground.
  • Respect the maker’s maximum connected run; split into several circuits for big layouts.
  • Keep lights clear of tent fabric seams and heaters, per the party tent guide.

Pair with a portable PA speaker. Browse light, sound and photo.

Common questions

How many feet of string lights do I need?

Measure each run and add about 50 percent for swag and zigzag layouts. A 20 × 40 ft area crisscrossed four times needs roughly 150 to 200 ft.

How many light strands can I connect?

Follow the maximum printed on the packaging or tag. LED strands typically allow many more connected than incandescent.

Are string lights safe in the rain?

Only if rated for outdoor or wet use. Keep plugs off the ground and use GFCI-protected outlets.

What bulb shape is most popular for weddings?

Round G40 globes and S14 Edison-style bulbs are the most common choices.