is there a list somewhere of standard colors used on wires and drawings?
eg, house wiring is usually white/black/green for pos/com/grd
Telephone pairs are always the same sets of colors. no way I can remember them all on a 24pair amphenol.. but I digress.
lamp cords have a spine on the, err i forget, one of the sides...
So in electronics the only 2 real constants I see is people use red for VCC and black for grd.
How about TX/RX? Any standards there?
How about digital vs analog wires? In fritzing I use orange for analog and blue for digital but that was just me deciding the first time I used it and never changing
How about AC vs DC?
No standards. Even the ones you mention are subject to national variations (I've never seen lamp cord with a differentiator, for example.)
Multipin connectors with 10 or fewer conductors will often be wirred with colors according the the resistor color code (pin0= black, pin7=purple, etc.)
yep, good old Black-Brown-ROYGBIV for resistor values.
Order something from www.mpja.com, they send along a nice little business size card with good stuff on it.
No real standards other than AC mains, sort of. In the US BLACK, RED, Blue are "120v hot" WHITE is common or neutral and GREEN/uninsulated is ground. However that does not mean the person running the wires did that. I opened up a few switch panels that had the uninsulated as the switched current carrying conductor (BIG no no.) Also 408V has a different code. OH and some times the colors for high voltage are used in low voltage as switched lines be cause "there is no high voltage here."
I prefer using "standards" when they apply but I also leave notes for the next person.
If I have a lot of signal wires and a lot of colours then I like to use the resistor colour code for the wire / signal numbers. Some ribbon cable is also coded like that. But like the others say there are no standards.
