I wonder if the forum has ever considered some folks are colour blind. Should we adopt some system that eliminates foul ups due to colour blindness?
There are many versions of color blindness.
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True, so does that mean many solutions, or is there a single solution that will work? I have seen little stickies that wrap around a wire usually with just a number (unique per project) in bold print.
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Looks good.
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- I tried these a while back, the 3 maybe even 5 smallest nib sizes are great.
- A head worn magnifier helps a lot.
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I think my finest is 0.3 so I will get some 0.1's. I use a magnifier all the time with my prescription glasses.
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You can get those little "sticky things" from an electrical supplier, they are called wire markers, cable markers, or wire numbers, Brady is a name that comes to mind. Here is a link to show some: https://nl.rs-online.com/web/c/cables-wires/cable-management/cable-markers/
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Many professions require the absence of natural colo(u)r blindness.
But now there are these...
However; extracted from the web page...
A 1978 study by the FAA looked at the "aeromedical" implications of the X-chrom lens, finding that the lenses increased scores in pseudoisochromatic plates without increasing performance in practical tests (e.g. aviation signal light gun test).[4] They subsequently banned the use of X-chrom lenses during tests. Today, most occupational screening for colorblindness have explicit bans on either the use of X-chrom lenses specifically or all color correcting lenses in general.
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Very clear.
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A subject dear to my heart.
Diagnosed with red-green (Protan or Deutan) colour blindness a long time ago, it has been a real pain.
I see colours, but not as others do.
Predominately a male problem, it's a bar to certain professions and a hinderance to others.
So no airline pilot career.
Electrical wiring is a problem. The old UK system used to be green (earth), red (live) and black (neutral).
The only one I could be certain of was black. Old wiring, especially the rubber variety, appeared as black and two other difficult to distinguish colours.
Fortunately, the new colours (blue, brown and green/yellow) are much easier.
A multicore signal cable is a challenge.
A daylight light source and a strong magnifier helps, but not always.
Yes, I use number tags, white sleeving to mark on or continuity if in doubt.
On complicated wiring, I use binary notation (bar or dot) and say, a 4 bit system.
I once traced and tested every cable in my house and documented it.
Where cables, commonly referred to as twin and earth in the UK, emerged into back boxes, I added key box tags and a cable tie with it's function and consumer unit circuit ID.
Every socket outlet, every switch, every junction box, had a code.
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Yes, we all know you only wear blue socks. 
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Not right now.
Gone commando this morning.
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