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Handheld Voltage Drop Calculators?

Discussion in 'Landscape Lighting' started by irrig8r, Jul 2, 2008.

  1. irrig8r

    irrig8r LawnSite Platinum Member
    Messages: 4,553

    I know I can access voltage drop calculators on websites (like Vista's) or download the Unique Wiring Wizard, but I want something I can take to the field with me when measurements on paper are different than what I find on the ground, or plans change.

    I'm basically looking for something I can use for those on-the-fly, work in progress design changes, where I know my distances and number of fixtures I want, but don't have Internet access or a laptop with me.

    Basically I want a hand-held calculator into which I can change variables, like Watts, wire gauge or length of run to see which will work best for me. It could be standalone (my preference) or even a program I could run on a Palm device or smart phone.

    If it would also allow me to enter my costs for various materials and help come up with and compare the results of different wiring methods it would be even better.

    Calculated Industries makes the Electricalc. http://www.calculated.com/productcart/pc/viewPrd.asp?idcategory=0&idproduct=160

    Many more functions than I would ever use, and nothing aimed at LV lighting as far as I can tell. I talked to someone in R and D there, and he didn't think there was a big enough market to make it worth their while.
  2. JoeyD

    JoeyD LawnSite Silver Member
    Messages: 2,933

    Gregg, I have slide rulers that you can have...I use my slide ruler EVERYDAY! it is very handy to have....let me know if you need one.
  3. irrig8r

    irrig8r LawnSite Platinum Member
    Messages: 4,553

    Yes please. Two if you can. I think you still have my address.

    As far as the costs go, I'm thinking maybe my son can help me write an Excel macro... and I think there's a version of Excel that goes on a handheld...

    Here it is:
  4. JoeyD

    JoeyD LawnSite Silver Member
    Messages: 2,933

    I will get you a few....I also have an excel based calculator that we use internally btu I am not sure I can share that just yet.....to many copy cats running around trying to capatilize off of our work!
  5. NightScenes

    NightScenes LawnSite Silver Member
    Male, from Kingsland, Texas
    Messages: 2,214

    Those slide rules of Unique's are great. We use them all the time.
  6. The Lighting Geek

    The Lighting Geek LawnSite Senior Member
    Messages: 886

    I just showed one of my guys how to use it, he was mad becuse he had been doing it the long way. I told him he needed to know how to figure it out first, then he would appreciate the Value of the slide rule. He thinks I'm mean...I just laughed at him...LOL!
  7. Lite4

    Lite4 LawnSite Gold Member
    Messages: 3,173

    Slide Rule?!? Are you pulling my leg?
  8. Chris J

    Chris J LawnSite Silver Member
    Messages: 2,843

    No Tim, they aren't pulling your leg. They are actually pretty cool (and accurate for the most part).
  9. JoeyD

    JoeyD LawnSite Silver Member
    Messages: 2,933

    Everyone who wants one just shoot me a PM....include your shipping address for me...it will save me some time.....I am lazy, I am already in vacation mode and its only 6:30am!! Only 10 more hours to go!!!
  10. Lambent Leaves

    Lambent Leaves LawnSite Member
    Messages: 9

    I wrote a macro for excel that has a VD calculator, amp rating for the wire size used and amps used per watts... the basics. I run it on my smartphone and laptop.

    The Unique sliderule is great, but is one more thing to carry around with you. With my calculator I have it everywhere I have my phone, which is everywhere I am.

    PM me for a copy.

    Note: I developed it while working for FX Luminaire, but copyrighted it myself, since they showed no real interest in marketing it.

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