Power and control
How are you going to power and control your LEDs? This is the next thing to consider.
Your LED strips will need a power supply. For your staircase, you’ll most likely be using LED strips that draw a 12-volt input (some brighter tapes draw 24V instead), so you’ll need a 12V transformer to step down your mains supply.
LED transformers are described by the number of watts they can output. You’ll want a transformer (or transformers) that outputs enough wattage to power all your LED strips. To work out how powerful your power supply needs to be, multiply the watts per metre of the LED strip by the strip’s total length. See our power supply support page for more info.
Where will you fit your power supply? One option is to install it out of sight, behind your steps. You may want to discuss the best, most unobtrusive place to fit your transformer with your electrician.