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> color-coding the ends Is there ever a scenario where color-coding is the only safety feature? Because people can be remarkably ignorant about color-blindnes
by msla 8y ago
> color-coding the ends
Is there ever a scenario where color-coding is the only safety feature?
Because people can be remarkably ignorant about color-blindness.
- WalterBright 8y agoA lot of electrical wiring is that way, including your high voltage house wiring. Yes, the wires hooked up wrong in a house of mine long ago, I don't know if the electrician did it or the previous homeowner. If you're color blind, you're going to have problems building electronic boards. In the Air Force, you can't be a pilot if you're color blind. A friend of mine is totally color blind. He'd ask me to check his work when it mattered. He memorized the locations of all the flashing yellow traffic lights, and was fine until one day it was changed to a flashing red. Fortunately, his wife was with him and was able to alert him.
- msla 8y ago> If you're color blind, you're going to have problems building electronic boards. Not acceptable in a job, as per the ADA.
- quotemstr 8y agoYou don't have to use literal colors for color coding. Different stipple patterns, for example, work too.
- village-idiot 8y agoIt’s also pretty reasonable to not hire color blind people for roles where color is critical to doing the job safely.
- mikestew 8y agoBecause people can be remarkably ignorant about color-blindness. Including those claiming to speak for those with color-deficient vision. I’m “color-blind” in the colloquial sense, and I’ve done wiring for years without problem. The reason is, and I don’t know if this is by design, that there is rarely a single distinction between wires. IOW, not just blue but blue with a white stripe. There will not be a purple-with-white-stripe (easy to confuse with blue). There might be purple-with-black-stripe. There might be red-with-white-stripe, which most people with color-deficient vision can distinguish from blue. The only time in recent memory that I’ve had to have the wife help was when a store-front shop sent me a harness with solid blue and solid violet, and the violet wasn’t “violet” enough to tell from blue. And house wiring? If you can’t tell white from black from bare copper, you’ve got bigger issues.
- bonzini 8y agoWould you be able to distinguish all three of black, blue and brown?
- mikestew 8y agoYup, not a problem, at least compared to each other (“there’s black, blue, brown: match wire to color”). Ask me if the brown wire is really green? Dunno. Real color blindness, which is a tiny percentage of the population, might have a problem, though.
- msla 8y agoOK, how about red versus green wiring?