[dananton485]

Have an LED neon strip it is 12v DC and has an A/C adapter is rated at 12v at 2 amps. The length of the strip is 6.5" long. Plan would be to cut off supply and hardwire in parallel to a single power supply rated at 12v 40 amps

Need to connect a total of 15 strips connected together on one power supply if possible

According to my calculations, each strip is consuming 24 watts.

At first, I thought I could wire everything in parallel and connect it to 120 A/C to 12volt power supply that is rated at 40 amps. However, I'm worried about the total length of the wire which is 6.5 feet x 15 = 97.5 feet

I guess my concern is how to address the voltage drop with this longer length and how large of a gauge wire will I need. Or would it be better to run lower amperage power supplies say 2 12v 20 amp power supplies.

 

[RAL238]

If you keep the load on the power supply to under 100W and use Class 2 power supplies, you can use common doorbell type wire to connect things, and you don't need to worry much about how you run your cables. But you'll need multiple power supplies for all your LEDs.



If you go above 100W, you're no longer Class 2 and more stringent rules apply for the wiring, just as if you were running 120VAC.



For Class 2, you can use #18 wire and even #20 or #22, depending on the lengths of the cables and LED strips.

 

[dmxtothemax]

post a picture of the layout,
with distances

 

[dananton485]

 

[dananton485]

post a picture of the layout,
with distances

 

[dananton485]

I tried posting a pic linked google drive image with a share setting to anyone with the link. Doesn't seem to show up here any ideas

 

[dananton485]

https://drive.google.com/file/d/1X21jnhSIri7VK-HGyiRR2peAkGow3uen/view?usp=sharing