Wiring - Observation and Question

[otsep]

I noticed that my i-Pac Ultimate came with all 26 gauge wire and on the IL-lumination RGB 5VDC LED it's even smaller(28?). 

Given that you're using stranded wire and working in terms of milliamps, is there a need to go with a heavier gauge?    FWIW, I've read the wiki and am aware of the 18/22 remarks.  It just seemed odd given that Ultimarc & PA shipped their products with different gauges than I've seen most commonly used.

I need to order more wire and was curious as to what the community's thoughts are.

Thanks,

-Shaun

[BadMouth]

Most of my past experience with wiring was automotive, so initially I used 16-18 gauge hookup wire.
I noticed other people using old Cat5 cable and such, but figured bigger was better.

Then with my driving cab I started having issues with the bulk of the wire being an issue when it came time to put panels back together.
For next wiring project, I ordered 22 gauge because it was easy to find.
I was taken back by how much less room the wiring takes up and how much easier it is to organize.

I've stuck with 22 gauge since because it's easy to find in bulk and in multiple colors.

That said, if it's a pre-wired harness I see no reason in going to the expense and hassle of replacing it.

[mgb]

When dealing with cables to individual leds and encoder inputs for controls, you really don't need a heavier gauge. So something like a small harness doesn't need much.
When running a power circuit of 5v or whatever to a bunch of leds then it doesn't hurt to use 18 awg or so.
Think of your home wiring. The wires in the wall may be 12awg (14awg for 15A) but then the internal wifes to your device that plugs into May be 16 or smaller.

The original arcade machines typically used 18 gauge for 5v, 12v, etc. power feeds and 20gauge for controls.
I like to use 22 awg stranded because it's easy to get.