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  1. #31
    Registered User Glenn's Avatar
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    Re: Let's talk about lighting

    Decent whitepaper on HID vs. Fluorescent. (Written Nov 2004)

    http://www.aboutlightingcontrols.org...-low-bay.shtml
    Glenn H. Shelton III
    My Garage Pics

  2. #32
    Registered User Glenn's Avatar
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    Re: Let's talk about lighting

    Just wanted to attach this foot-candle chart. I really think I want to be at 100fc at 3'.
    Glenn H. Shelton III
    My Garage Pics

  3. #33
    Contributing Member MXtras's Avatar
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    Re: Let's talk about lighting

    I am curious to know how my RedNeck Watts/SqFt calculation stands up to the real world stuff.

    But I am too lazy.

    Scott
    If it wasn't for the last minute I wouldn't get anything done

  4. #34
    Registered User Glenn's Avatar
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    Re: Let's talk about lighting

    In my post a few above I stated:

    Entering this information into the Visual lighting software, I come up with a FC average of 97.8fc using 32 4-bulb fixtures with a total wattage of 4096watts over the top of 1600 square feet for a watt/sqft of 2.56 W/ft squared (2.25 according to Visual.)
    The 2.56 W/ft squared was using your formula and the software told me it would be 2.25. So yours is pretty close.
    Glenn H. Shelton III
    My Garage Pics

  5. #35
    Registered User Glenn's Avatar
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    Re: Let's talk about lighting

    OK, so I am not sure why it took so long to figure this out but... The Watts per square foot is not really a deciding factor. Being you can get different levels of lumens out of the same wattage bulb, you can actually have more foot-candles of light with less wattage and therefore be brighter with less wattage per square foot.

    I hope this makes sense.
    Glenn H. Shelton III
    My Garage Pics

  6. #36
    Contributing Member MXtras's Avatar
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    Re: Let's talk about lighting

    Still in the dark, Glenn?

    Scott
    If it wasn't for the last minute I wouldn't get anything done

  7. #37
    Registered User Glenn's Avatar
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    Re: Let's talk about lighting

    Yes. Still in the dark. Priorities have shifted back to the house for a bit.

    The power company approved me for 400 Amp service though so I will have a full 200 Amps to the garage. (Not like the typical 400 Amp residential service only being 320 Amps.) So I should be able to light that thing up BRIGHT. LOL!

    I will work it out one day. The sad part is that I am lighting the whole building with 10 22Watt cork screw fluorescents right now. (It is not near bright enough.)
    Glenn H. Shelton III
    My Garage Pics

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