# CCTV cable power rating?

I want to know whether I can use this d-link 3+1 CCTV cable for powering an led strip which runs at 12 volts 1 amp. The led strip is approximately 12 meters away from the smps power adapter. I checked the datasheet of the cable for power ratings on the 3 multi-strand copper wires but they're not given. All that is provided is that there are 14 strands per wire and they're 0.1mm diameter each I think. No cross sectional area or resistance is stated.

Datasheet for cable

• Calculate the area of each strand. Multiply that by 14 to give you the total current carrying cross section for each wire. Than look that up in a wire gauge table to see what standard wire size comes close (say #26). Finally, use the current rating for that size wire and/or the resistance, current, and your voltage drop requirement to see if it meets your need. You do the work and post it here, and we'll check it for you. Feb 5, 2022 at 12:34
• Telecomms equipment and PoE (power over Ethernet) use 48 V to transfer reasonable amounts of power with small diameter wires. Feb 5, 2022 at 22:55

No cross sectional area or resistance is stated.

But, you can work that out... a 0.1 mm diameter wire has a CSA (cross sectional area) of 0.007854 mm² and, given that there are 14 of them, that's a net CSA of 0.11 mm².

Then, google an AWG table and see which wire has the closest net CSA. Here's one: -

It looks somewhere between AWG 27 and AWG 26. So, google what the current carrying capacity is of these types of wire: -

It looks like 26 AWG is only really recommended for a maximum current of 361 mA so, you might be out of luck.

I want to know whether I can use this d-link 3+1 CCTV cable for powering an led strip which runs at 12 volts 1 amp.

I think probably not.

• That was quick. Thank you for helping me out. I guess I'll invest in a new 0.75mm² copper wire. Should have enough current rating and a lower resistance too. Feb 5, 2022 at 12:48