Bright Ideas

How to assemble LED under cabinet lights (UCA series) - Part 3

Posted by Kamna Mirchandani on Jan 23, 2015 2:06 PM

In this final blog post of our three part series on the assembly of LED under cabinet lights, we will discuss various assembly options for the hardwired version of the UCA series. Using a hardwire power supply for your install creates a seamless appearance since no wires are exposed and the lights are operated from the wall switch. Please note that the hardwired assembly requires a qualified electrician to carry out your install and is more complicated compared to the plugin assembly.

Selecting hardwired power supplies

As mentioned in Parts 1 & 2, the UCA unit consists of the fixture which comes in varying interconnecting lengths of 9”, 12”, 20” and 40”, a direct connector, a cable connector and 2 screws. Hardwired power supplies are currently available in 5 wattages for you to choose from as shown below:   

  • 25W - Non dimmable
  • 40W - Dimmable
  • 60W - Dimmable
  • 96W - Dimmable
  • 150W - Dimmable

When selecting a power supply, sum up the wattage of individual components in your run, add a buffer of 10% to decide the maximum wattage you will need. As mentioned in part 2, you can split the load from one power supply in up to 8 directions using either the 4 / 8 receptacle outlet splitter.  Bear in mind that the maximum wattage on each individual run is 32 watts.






Dimmable power supplies offer the option of dimming the lights from your wall switch using a standard triac, magnetic or electronic dimmer. The non-dimmable power supply is a more cost effective option for smaller installations where you cannot dim lights from the wall switch but instead use the touch dimmer accessory for dimming instead.

Hardwired assembly options

  • Touch Dimmer:  The touch dimmer allows you to adjust light levels ranging from completely dimmed down light levels to full brightness. This accessory is to be used with a non dimmable power supply where you cannot dim down the lights from the wall switch. It is a more cost effective way to add the dimming functionality to your space.



  • Motion Sensor: The motion sensor or occupancy sensor detects motion in the room and accordingly switches on the light. Depending on the setting chosen and no motion being detected, the light will then switch off. The light switch must be in an ‘ON’ position for the motion sensor to work.


  • DC Junction Box Connector: The DC junction box connector is an neat accessory that allows you to run bell wire (Wire LVT 18/2) behind the dry wall facilitating a safe and neat install.


The UCA series is a slim versatile fixture that can be used in a variety of residential and commercial applications such as kitchens, coolers, workspaces, office spaces. It's thin profile, pivoting ability, high lumen output and wide range of accessories allow you to create optimal light levels for multiple applications. We hope you found this three part blog series on UCA installation helpful, please reach out to us if you have any questions during your install.

Are you considering under cabinet LED lights for your kitchen? Download our Buyer guide on ‘LED under cabinet lighting for your kitchen’  


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Topics: Under cabinet LED