I'm hoping to put some lights in a residential hallway closet, so it's easier to see inside. I am considering running low voltage lighting (eg. these LV pucks), or a small regular-voltage light fixture or light socket.

What are the technical and code considerations for running LV vs. regular lights in a closet? Is it just a matter of personal preference, or is one way easier to do and/or more power efficient than the other?

For the record, I’d like to put the lights on a switch.

  • "Which is better?" is purely opinion based and is, therefore off-topic. "What are the technical considerations?" is very objective and on topic. Edit out the rest and go with that.
    – FreeMan
    Aug 11, 2020 at 20:09
  • 1
    Thanks @Freeman I'll give it a go.
    – Jason
    Aug 11, 2020 at 20:10
  • 2
    There are code differences and that is on topic.
    – Ed Beal
    Aug 11, 2020 at 21:55
  • I am not 100% sure of this but I seem to recall anything below 48v is not subject to NEC.
    – Puddles
    Aug 11, 2020 at 23:37

1 Answer 1


There are some requirements for mains voltage lamps in a closet NEC 410.goes over these requirements. The advantage to These low voltage Low wattage lamps is the instructions allow them to be surface mounted without conduit. The transformer or supply can be used as a plug in or box mounted there is a switch in the model you listed. Code allows and even requires you to follow the manufacturers instructions so in that case where it may not be allowed with mains lighting it is possible when the instructions are followed. So is one way easier?

Yes a simple system like you have can be run on the surface without conduit. Mains voltage requires boxes for splices these handy low voltage connections do not require boxes even if you run them inside the walls. I use low voltage rings for data and cable all the time a WBF-1 low voltage box eliminator provides a mounting surface for a low voltage Jack or plug in. When it comes down to efficiency that is based on the quality of the LED 160lumens per watt is an efficient LED but smaller lower cost may only have 110 lumens per watt and that can be the same low voltage System or standard mains voltage lamps. The advantage with low voltage is plugging in & surface mounting with just double stick tape in some brands (yours has screws).

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