How to choose Christmas tree lights: length, layout and power

Choosing Christmas tree lights starts with the effect you want and the space you have. The number of LEDs is useful, but it is only one part of the decision. Two sets with the same number of lights can cover very different distances because the spacing and arrangement of the bulbs differ.

Choose the lighting layout first

String lights give you flexibility to wind lights through branches and spread them around the tree. Compare the illuminated length when deciding how much coverage you need.

Cluster lights group lights closely along the cable for a fuller band of sparkle. They suit a more concentrated effect, but a high LED count does not necessarily mean a long cable.

TreeBrights are a Premier range designed for Christmas tree decorating. Check each set's stated LED count, length, colour and functions rather than treating every product in the range as identical.

Measure your tree and the route to the socket

Note the height and width of the tree, and decide whether you will decorate all sides or mainly the side facing the room. A broad tree and a densely lit style need more coverage than a narrow tree with a subtle outline.

Measure from your intended power source to the first decorated branch. This is where the lead length matters. The lead cable is not the same as the illuminated length, and a quoted total length may include both.

There is no single LED count that gives the right result on every tree. Use the product's dimensions and layout to plan the display, then distribute the lights evenly before adding baubles.

Mains or battery?

A mains-powered set needs a suitable socket and a practical cable route. Battery lights can be useful where access to a socket is awkward. Check the battery requirements, timer details and any power supply information for the exact product you choose.

Do not assume that every illuminated decoration uses the same power source. A light-up wreath, acrylic figure and light string may each have different requirements.

Choose a colour and lighting effect

White gives a crisp look, while warm white gives a softer golden glow. Multicolour can become the main feature of the tree. See our white versus warm white guide if you are deciding between the two.

If you prefer a steady display, check that the selected set offers a static mode. If a timer matters to you, read the stated schedule rather than assuming all timers work alike.

Before you decorate

Check and test the lights in line with the supplied instructions before winding them around the tree. Keep the plug accessible and use products only in locations approved by the manufacturer. Install the lights first, step back to check the spacing, and then add your decorations.

Explore TreeBrights, cluster lights and battery-operated lights, or browse our Christmas trees to plan a new display.