RE: [TCML] OT: Any oneknow any foreign wiring color code / voltage polarity standards?

[William Noble <william_b_noble@xxxxxxx>]

generally I think european standards can help - 

 

green with yellow stripe is safety ground

 

brown is often ground in DC systems, neutral in AC

 

there may be an IEC standard
 
> Date: Tue, 22 Jun 2010 23:15:31 -0400
> From: Dave@xxxxxxxxxxxxxxxx
> To: tesla@xxxxxxxxxx
> Subject: [TCML] OT: Any oneknow any foreign wiring color code / voltage polarity standards?
> 
> Group,
> 
> As a general rule, for American designed and built devices, once upon a 
> time, you could assume that wires colored:
> 
> White, brown, red, orange, and yellow were for positive voltages.
> 
> Green was ground.
> 
> Black, blue, violet and gray were for negative voltages.
> 
> Black is "hot" and white "neutral" for power conductors, with green as 
> earth ground.
> 
> I know that there were exceptions, and no hard and fast or official 
> rules, but in my experience, those color assignments applied 90% of the 
> time.
> 
> HOWEVER,
> 
> In items imported from Asia, the color codes are all screwy (by American 
> standards). I have on my bench a LED display device that has gray and 
> violet wires for power, and yellow and blue wires for signals. (with an 
> additional gray and violet pair bundled in for power). You also see 
> cables with pink and tan conductors. Similar color groupings show up in 
> VCRs and DVD players.
> 
> I've found various tables of color sequences that do not match the 
> conventional US resistor code sequence. Tan and pink show up as numbers 
> 11 and 12 in some of the sequences.
> 
> My question:
> 
> Is anyone aware of any convention as to the assignment of positive and 
> negative voltages to the wire colors used in Asian electronics?
> 
> Thanks in advance,
> 
> Dave
> 
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