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Recent content by spryduck

  1. spryduck

    Spelling "Misteaks"

    The dictionary says busses and buses are both appropriate. Just remember that buss is another word for kiss. So, busses also means kisses. I prefer buses, misoperations, and amps. I am just a heathen American and would not know proper English if it slapped me upside the head. When life...
  2. spryduck

    What to do about perceived future threats?

    So let's see.... Terrorists are idiots, there is no way to idiot proof everything, so there is no way to terrorist proof everything. No, not all of these guys are idiots. Some have PhDs (in what or from where I do not know) so we cannot assume that they are all dumb. Before getting my EE...
  3. spryduck

    Need help illuminating an underwater object using overhead lighting.

    While doing yet another search on underwater lights I found the following site: http://www.rosys.com I think this may be the ticket I was looking for. When life gives you lemons, make lemonade. When life gives you grenades, well....
  4. spryduck

    Green,red lights

    Yes, NFPA 79 Sec 10 does cover this, if the pushbutton and HMI are used by an industrial machine, and if your AHJ has adopted this standard and is enforcing it. The DOE (at least to my knowledge) has not adopted this standard so in my case I follow the home-brewed standard that our subject...
  5. spryduck

    Need help illuminating an underwater object using overhead lighting.

    I agree. Due to the nature of this particular beast I cannot install permanent underwater lighting. I have told the folks that requested this that there was no good way I could find to do this due to the reflection/refraction issues. I also cannot place any lighting directly overhead. Does...
  6. spryduck

    Green,red lights

    In the absence of a defininitive standard, it may be worthwhile to talk to the folks who will be operating the system to see what they expect or what is most widely used in the plant where the system will be located. You want the controls to be as intuitive as possible and not every person sees...
  7. spryduck

    Need help illuminating an underwater object using overhead lighting.

    I need to find out how to illuminate underwater objects (approx 6' underwater) using only overhead lighting such as spots or floods. Due to the constraints of the location, the lights must be at least 15' above the surface of the water. I am concerned that floods will produce too much glare...

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