What’s the right distance between light towers?
You’ve got a site that needs lighting.
Maybe it’s a construction area, a parking lot or a temporary path at an event.
You already know you’ll need light towers…
But then comes the real question:
How far apart should you place them?
Good question.
The short answer?
👉 It depends.
The longer and more useful answer?
You’ll find it right here.
Why the Right Distance Matters
If light towers are spaced too far apart, you get dark areas.
That’s not just inconvenient, it can also be unsafe if people need to work or move around at night.
Too close together, and you’re wasting energy, equipment and budget.
So the trick is to find the sweet spot: enough light, without overkill.
3 Things That Determine the Right Spacing
1. The Purpose of the Lighting
Not every site needs the same level of brightness.
|
Application |
Recommended brightness (lux) |
|---|---|
|
Working (construction, loading/unloading) |
20 – 50 lux |
|
Safety (monitoring, theft prevention) |
10 – 20 lux |
|
Orientation (walking, parking) |
5 – 10 lux |
👉 Lower lux means you can leave more space between the towers.
Need stronger light to work safely? Then place towers closer together.
2. Tower Height and Light Spread
In this guide, we’ll use an example tower:
8.5 meters tall with 200-watt LED lights, often set up with 2 or 4 lamps.
Our LEDs output 170 lumens per watt, so 4 x 200W gives you 136,000 lumens in total.
But how far does that actually go?
Here are two real-world setups, based on a minimum of 10 lux at ground level:
|
Setup |
Minimum reach (10 lux) |
|---|---|
|
2 x 200W LED at 8.5 m |
27.33 meters |
|
4 x 200W LED at 8.5 m |
22.69 meters |
Surprising, right?
With 2 lamps, the beam reaches slightly further because the light is more focused.
With 4 lamps, the light spreads in a full 360°, which reduces the reach in any one direction but improves total area coverage.
👉 So, in practice:
-
Use 2 lamps (focused) for lighting paths, driveways or narrow work zones. Space towers around 25 meters apart.
-
Use 4 lamps (360°) for open areas or parking lots. Place towers around 20 meters apart for consistent, shadow-free coverage.
3. How Much Overlap You Want Between Light Beams
It’s always smart to let the beams from different towers slightly overlap. That way, you avoid dark patches. Especially for safety or surveillance, a consistent light pattern is key.
Here’s a simple rule of thumb:
👉 If a light tower has a 30-meter beam spread, place the next tower at 25 meters.
This gives you clean coverage without wasting light.
Want to Calculate It Yourself?
Wondering exactly how many light towers you need for your site, project or event?
Use our online light planning tool to quickly calculate the number of towers you need, based on your site layout and desired brightness.
👉 Try the Light Tower Calculator
In Summary
To determine the ideal spacing between light towers, consider:
-
the required brightness level (lux)
-
the height of the tower
-
the number and type of lamps
-
the shape and layout of the site
-
and most of all: what you’re actually doing there
With these guidelines, you’ll have a solid starting point.
And with our help, or the online tool, you’ll end up with a lighting plan that’s both practical and cost-effective.
Got a specific situation or not sure what setup works best?
We’re happy to help you figure it out.
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