5 Common Mistakes When Installing Outdoor String Lights (and How to Avoid Them)
Outdoor string lights can instantly transform a patio, garden, or courtyard into a warm, magical atmosphere—but many DIY installers make simple mistakes that lead to safety issues, early product failure, or poor visual results.
This guide highlights the five most common outdoor lighting mistakes and shows you how to avoid them with professional techniques and weatherproof product choices.
Mistake 1 – Using Indoor-Rated Lights Outdoors
One of the most common errors is using indoor-only string lights outside without checking the IP rating. Indoor lights are not designed for moisture and often fail within days when exposed to rain or humidity.
How to Avoid This Mistake
- Choose IP44 or higher for standard outdoor use.
- Use IP65/IP66 for heavy rain, snow, or coastal humidity.
- Always check for UL-listed plugs and sealed connectors.
Recommended weatherproof products:
These products are engineered specifically for long-term outdoor durability.
Mistake 2 – Overloading Circuits or Connections
Many users plug too many strands together or use low-quality extension cords, which can cause overheating or tripped breakers.
How to Avoid This Mistake
- Check wattage:
- Incandescent: approx. 40.8W per 100 bulbs
- Follow the manufacturer’s max connectable sets
- Most incandescents: maximum 5 sets
- Rubber-cable LEDs: 10+ sets
- Use only outdoor-rated heavy-duty extension cords (12–14 gauge).
Mistake 3 – Poor Hanging Technique (Sagging or Breaking)
Outdoor string lights often sag or snap because they’re hung without support, especially in windy areas.
Correct Step-by-Step Installation
- Measure your space and plan the layout.
- Install a guide wire or stainless steel cable for runs over 30 ft.
- Use UV-resistant zip ties, cup hooks, or suspension kits every 3–5 ft.
- Leave 6–12 inches of slack to allow wind movement.
- Hang bulbs facing downward to prevent water pooling.
Mistake 4 – Ignoring Safety Near Pools or Water Features
Cheap store-bought lights often have weak wiring, poor soldering, and zero weather sealing.
Safety Rules to Follow
- Keep at least 10 ft horizontal distance from pools (per NEC).
- Choose low-voltage (12V–24V) or GFCI-protected 120V circuits.
- Keep plugs, connectors, and controllers inside weatherproof boxes and elevated off the ground.
Mistake 5 – Buying Low-Quality Lights That Fail After One Season
Cheap store-bought lights often have weak wiring, poor soldering, and zero weather sealing.
How to Choose Quality Outdoor String Lights
- Buy from manufacturers with real factory production, not resellers.
- Look for UL/CE certifications and high-IP waterproof ratings.
- Choose products with at least 25,000-hour lifespan and multi-year warranties.
Golden Vessel operates factories in China and Cambodia, and:
- The Cambodia lighting factory (Winkstar) specializes in IP66 sealed string lights
- Cold-resistant, fully automated welding
- 25,000-hour lifespan
- 2-year warranty
👉 Learn more on the Cambodia factory introduction page.
Quick FAQ – Outdoor Patio Lighting Safety
Can I leave string lights up year-round?
Yes—if they are IP44–IP66 and UV-resistant. Protect plugs during storms.
Are LEDs or incandescent safer outdoors?
LEDs are safer because they run cooler and use less power.
Do I need a GFCI outlet?
Yes, it is required by electrical code in many countries for all outdoor 120V circuits.
What if a bulb burns out?
High-quality sets like the Rubber Cable String Light with Glue stay lit even if one bulb fails.
Ready for a Hassle-Free Installation?
Avoiding these common mistakes ensures your outdoor string lights are safe, long-lasting, and visually stunning.
Explore professional-grade options or request custom solutions on the Contact Us page.