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Non-metalic NEMA box--Observatory

Discussion in 'Electronic Basics' started by W. eWatson, Sep 24, 2012.

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  1. W. eWatson

    W. eWatson Guest

    My observatory story continues. I've been getting some tips from a guy
    in Hawaii about how to proceed over the last 4 months. I finally decided
    to hire him to build some of the components in HI. He will then ship
    them to me, and I will do the installation, perhaps with an aid of a
    licensed electrician.

    Right now I'm buy the parts that he will need. He needs two NEMA
    non-metallic boxes that are about 2'x2'x8". Ideally, it would be good if
    I could find a place in HI that carries them. That we reduce shipment
    there. This morning I've called Grainger, ZORO, Graybar, and some
    suppliers in HI. Haven't tried Platt.

    So far the biggest box anyone can come up with is 18"x12"x8.7". Some
    ofthese boxes are selling at around $1000. Strangely, ZORO's is around
    $200-250. I guess my inexperience is at play here. I need to call the
    fellow to get some better details what he's after, and why that 2'x2'x8"
    request seems out of the cards.

    Anyway, I'm just throwing this msg out to the group for comments. $1000!???

    Strangely, when I decided to hire the guy, I found two more people like
    him that do observatory work. I'm sticking with HI though. They all do
    high quality work.
     
  2. Tom Biasi

    Tom Biasi Guest

    That is a strange size. The cost not only depends on the size but the
    NEMA class. Ask him what class he needs and to explain that size.

    Automation Direct has a good supply of enclosures.

    Tom
     
  3. W. eWatson

    W. eWatson Guest

    For boxes? Never heard of them.
     
  4. W. eWatson

    W. eWatson Guest

    ....
    Presumably I will save money--mainland vs HI, shipping and maybe
    generally higher prices there. Possibly cut down on his time searching
    for them. I actually I called four suppliers on Hawaii this morning, and
    none had any size close to it. I found ZORO has 18"x18"x9". I just sent
    him a msg about that. Maybe 3 boxes 18"-ers !!!
     
  5. Jasen Betts

    Jasen Betts Guest

    "NEMA" is kind of meaningless on its own like that.

    how non-metallic does it need to be?

    Is an ABS box with stainless fasteners even acceptable?

    Will a 12U 19" rack cabinet a glass front (metal sides and open back) work?
     
  6. a NEMA enclosure has no meaning by itself. NEMA has more than one
    specification for one box, if you weren't aware.
     
  7. W. eWatson

    W. eWatson Guest

    He wants a NEMA non-metallic, and would prefer a "window". If not a
    window then a door with latches.
     
  8. W. eWatson

    W. eWatson Guest

    I discovered via Wikipedia that there are about 11 types of NEMA boxes.
    I think type 1 is sufficient.
     
  9. W. eWatson

    W. eWatson Guest

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