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Am colour blind, need help identifying bands
pcprogrammer:
--- Quote from: Miyuki on August 25, 2022, 08:35:56 am ---Those color stripes are sometimes so annoying, especially when they use some crap paints that tend to shift hues over time or temperature
I know the tiny numbers have other issues and always ended in a bad place when inserted into the board. But at least it was clear and not a guessing name.
But once you have a picture taken you can use some graphics app to identify colors, even the dumbest MSPaint will allow you to show R,G,B, or a Hue value to say what color it is
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But if you try it with these pictures it depends on where you sample the color. Also has to do with compression like jpeg, where colors might blurr. Zooming in might help though.
pcprogrammer:
--- Quote from: Ed.Kloonk on August 25, 2022, 07:08:33 am ---Our illustrious reg authorities back in the dark ages decided to select red/black/green for active/neutral/earth for what is called building wire used in houses. Of course people with red/green deficiencies (their words, not mine) (most common, I believe) showed up. So they added a yellow stripe to the green one. Or sometimes, you'd swear it is green stripe on yellow.
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With the colors you mention for building wiring, you would be in for a surprise in the Netherlands or France. In both countries blue is neutral, and black is live for lamps comming from a switch to connect to the light socket. In France red is usually live, but brown is also used, while in the Netherlands brown is live. Earth is the same here, green with a yellow stripe.
madires:
On the first picture the colors are darker. So it's hard to tell if L1/2's first two rings are red or brown. The third ring looks more like a dark brown than black. The second picture shows brigther colors. The first two rings are red and the third is brown. I'd say L1 and L2 are 220µH.
JohanH:
--- Quote from: pcprogrammer on August 25, 2022, 08:58:16 am ---
With the colors you mention for building wiring, you would be in for a surprise in the Netherlands or France. In both countries blue is neutral, and black is live for lamps comming from a switch to connect to the light socket. In France red is usually live, but brown is also used, while in the Netherlands brown is live. Earth is the same here, green with a yellow stripe.
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European countries (including UK) have adapted international standard IEC 60446, where blue is neutral, green/yellow earth and brown is live. With three phases, live colours are brown, black and grey. Live red is old colour coding from prehistoric times. Of course there are still old installations with the old colour coding.
pcprogrammer:
--- Quote from: JohanH on August 25, 2022, 10:39:07 am ---
--- Quote from: pcprogrammer on August 25, 2022, 08:58:16 am ---
With the colors you mention for building wiring, you would be in for a surprise in the Netherlands or France. In both countries blue is neutral, and black is live for lamps comming from a switch to connect to the light socket. In France red is usually live, but brown is also used, while in the Netherlands brown is live. Earth is the same here, green with a yellow stripe.
--- End quote ---
European countries (including UK) have adapted international standard IEC 60446, where blue is neutral, green/yellow earth and brown is live. With three phases, live colours are brown, black and grey. Live red is old colour coding from prehistoric times. Of course there are still old installations with the old colour coding.
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Unless this was very very recent you should tell that to the French. Red is still very much used and sold when it comes to single wires. In cables with only 3 conductors it is either brown or black that is present for live. At least last time I bought which would be about 6 years ago. They also tended to use white and purple for switch wires but could also be used as live. This to distinguish between different circuit breaker groups.
Build an extension to the existing house we own and redid a big part of the wiring in the existing house. Looked into the French rules at that time, which is about 10 years ago. The French rules differ from the Dutch rules.
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