Author Topic: Red is Negative, Black is Positive in China?  (Read 28051 times)

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Offline videobruce

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Re: Red is Negative, Black is Positive in China?
« Reply #25 on: April 12, 2015, 07:13:09 am »
A small list in easy to understand form.
https://en.wikipedia.org/wiki/Electrical_wiring#Colour_code
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Notice, China is not included.  :-DD
« Last Edit: April 12, 2015, 07:15:05 am by videobruce »
 

Offline coppice

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Re: Red is Negative, Black is Positive in China?
« Reply #26 on: April 12, 2015, 07:43:04 am »
A small list in easy to understand form.
https://en.wikipedia.org/wiki/Electrical_wiring#Colour_code
.
Notice, China is not included.  :-DD
Notice, Japan is not included. What's your point?
 

Offline SeanB

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Re: Red is Negative, Black is Positive in China?
« Reply #27 on: April 12, 2015, 07:44:26 am »
At least one Chinese manufacturer uses wiring of green, red and yellow. Green is common, red is live and yellow is neutral. As it in any case came with a Australian standard plug attached, I simply opened it, put a proper cable along with a proper cable gland ( as opposed to the original of a hole drilled through the metal with the cable through it with a knot inside) to comply with local colour specifications, and with a South African/Indian standard plugtop as well. Ground went to a proper nut, nylock bolt and washer with a lug as well, not the original bare wire wrapped loosely around a random screw thread inside.

I did reuse the plug though, as Stuart had some Australian Yamaha gensets and was looking for a cheap source of the plugs, and I had also gotten some HP power leads with the Australian pattern as well so put them all together for him.
 

Offline coppice

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Re: Red is Negative, Black is Positive in China?
« Reply #28 on: April 12, 2015, 07:53:53 am »
At least one Chinese manufacturer uses wiring of green, red and yellow. Green is common, red is live and yellow is neutral. As it in any case came with a Australian standard plug attached, I simply opened it, put a proper cable along with a proper cable gland ( as opposed to the original of a hole drilled through the metal with the cable through it with a knot inside) to comply with local colour specifications, and with a South African/Indian standard plugtop as well. Ground went to a proper nut, nylock bolt and washer with a lug as well, not the original bare wire wrapped loosely around a random screw thread inside.

I did reuse the plug though, as Stuart had some Australian Yamaha gensets and was looking for a cheap source of the plugs, and I had also gotten some HP power leads with the Australian pattern as well so put them all together for him.
\
The Australian standard plug and the Chinese standard plug are identical.
 

Offline videobruce

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Re: Red is Negative, Black is Positive in China?
« Reply #29 on: April 12, 2015, 07:55:08 am »
Quote
Notice, Japan is not included. What's your point?
.
The "point" is, China, not Japan is in the threads subject.
 

Offline Zero999

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Re: Red is Negative, Black is Positive in China?
« Reply #30 on: April 12, 2015, 02:01:33 pm »
In the EU, the colour code for both AC and DC wiring is similar and the colour red is not part of this standard.

AC
L1 = Brown
L2 = Black
L3 = Gray
Neutral = Blue

DC
Blue is always the conductor which is at earth potential or is the centre tap on bipolar systems, so if it's negative earth it's -, if it's positive earth it's + and if it's bipolar, it's 0V.

Brown = + on negative earthed, unearthed or bipolar power supply
Grey = - on positive earthed, unearthed or bipolar power supply.

So if it's a battery powered installation and it's negative earthed you have:

- = Blue
+ = Brown

But if it's positive earthed you have:

+ = Blue
- = Gray

I suppose it's easier to say:

Gray = -V
Blue = 0V
Brown = +V

That's less confusing.

Green & yellow is always protective earth, irrespective of whether it's and AC or DC system.

The colours red and black, for DC systems have no official meaning, as far as the European wiring code is concerned.
« Last Edit: April 12, 2015, 02:05:18 pm by Hero999 »
 

Offline Rick Law

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Re: Red is Negative, Black is Positive in China?
« Reply #31 on: April 12, 2015, 04:58:29 pm »
I think this whole wiring scheme is a Darwinist conspiracy...

They want to use it to clean up the industry of careless people.  One moment of carelessness and zap, you are fried.

Now I feel I am being personally attacked...
 

Offline SoundTech-LG

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Re: Red is Negative, Black is Positive in China?
« Reply #32 on: April 15, 2015, 01:53:09 pm »
Where I work someone in the past, a firmware engineer I have been told, decided to use the Resistor Color Code, or Transformer Wire code in his wiring scheme to power our 4 volt battery device off a 3 volt to 5 volt level shifter. So Black, Brown, Red, Orange,Yellow. All good so far. Well then...  Black is + 4 Volts, and Yellow at the other end of the connector is Ground!  :-DD :palm:

It takes some getting used to...
« Last Edit: April 15, 2015, 07:26:12 pm by SoundTech-LG »
 

Offline electr_peter

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Re: Red is Negative, Black is Positive in China?
« Reply #33 on: April 15, 2015, 04:28:51 pm »
I had few scenarios where cable with identical pin-outs and connectors on both ends had different cable ordering on each end. 12V to 1V expecting circuitry or reverse polarity with "factory connector" :-//. Luckily, I always check cables so I spotted it before powering it up.
 


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