How thick of wire do I need for WS2812B and Arduino Mega

[ledscreenforfun]

Well, I can't decide what to do, but I more likely to run with individual cables.

[Paul_KD7HB]

Or you could do both, depending on the physical layout. Single cable for the + and multiple cables for the - return.

[ledscreenforfun]

@LarryD

• As pointed out, a single wire is quite unwieldy.
• Without knowing too much about your situation, suggest you do what myself and others have done and run something like 18AWG silicone insulated wire to strips individually.
  Of course if the strip is short, its power feed might be able to be combine at another strips power leads.
• Look at this chart showing 18AWG, has 150 individual strands and is 39 ohms per km 0.117 ohms per 3 meters.

It is necessary to use silicone cables. Will cables get hot?

[LarryD]

• The wires should be cool/cold.
  If warm, there is too much voltage drop and the wires should be heavier gauge.

• Doesn’t need to be silicone insulated, however, the number of strands in these wires makes for very flexible cabling.