Erik Janssen wrote:
Hello,
I need to connect some units with RS485 and in the user guide I have found
the following text regarding the cable to use:
"Wire gauge size is thicker than AWG #22 (0.33 mm2)."

I wonder what "AWG" is, is this a kind of a cable or specification?

Best Regards

E


AWG = American Wire Gauge. It is the cross sectional area of the wire. I.E.
AWG 22 means a .33 mm2 wire.

Wire size decreases with increasing number.

http://www.rbeelectronics.com/wtable.htm

It sounds 'backwards' but it derives from how wire was made. Wire was drawn
through a die containing a hole of the appropriate diameter but one could
reduce the wire size by only so much with each draw. So the gauge 'number'
roughly translated to how many die drawing steps it took to reduce the
original rod ('0' gauge) to the resultant wire size (in theory, 22 gauge
took 22 die reductions to get there). Those original 'gauges' were not
uniform and they've since been standardized (mid 1800s) and no longer
directly relate to the actual making but, rather, to a geometric
progression of the wire size itself: each next wire diameter is 0.890522
the previous (in AWG).