Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,300   Posts: 1,535,969   Online: 1072
      
Page 1 of 2 12 LastLast
Results 1 to 10 of 13
  1. #1
    Bill Burk's Avatar
    Join Date
    Feb 2010
    Shooter
    4x5 Format
    Posts
    3,207
    Images
    46

    Running a ground tonight

    I was thinking maybe the Omegalite-D doesn't have the most even light distribution, so I had my eye out for a grid lamp.

    Just got a new arrival - Aristo cold light head (thanks Art!)...

    I added an opalite piece of glass I'd had cut for the D-II many years ago.

    Cleaned up the unit and added a cds sensor so I can connect it to my ohmmeter like I did with the Omegalite-D. The banana plug sockets I had on hand were gold plated speaker jacks I'd planned to use at a friend's house but never got around to it. So this is looking first-class.

    Rewired it like my electrician friend would like it. Added a grounded cord, screwing the ground wire firmly to the case.

    Now I don't know why I didn't measure first and wire second. But after bolting the new head onto the enlarger and checking how well it aim... I go to run the wire to the Omega A-R-T timer... Guess how short it was...

    So now I am going to have to make a one-foot extension cord.

    Thinking I'll do it up right, and the Omega A-R-T is only two-prong... I am going to run a ground from the wall (verified grounded) to the enlarger. Then I can ground my new three prong cord and run a two-prong into the timer.

  2. #2
    Bill Burk's Avatar
    Join Date
    Feb 2010
    Shooter
    4x5 Format
    Posts
    3,207
    Images
    46
    Dry night in the darkroom. Had to call the water department in on a neighbor down the street, they left the water running again... underneath their sidewalk...

    So the main's shut off as they work on the pipe - again - I think they worked this section of the main four times.

  3. #3
    Bill Burk's Avatar
    Join Date
    Feb 2010
    Shooter
    4x5 Format
    Posts
    3,207
    Images
    46
    OK I am really not an engineer. I should have checked my parts supply.

    Can't run a two-prong extension cord tonight. Got plenty of two-prong plugs with wires. But I don't have a two-prong socket.

    Used the last one a while back to make a six-inch extension cord.

  4. #4
    markbarendt's Avatar
    Join Date
    May 2008
    Location
    Ignacio, CO, USA
    Shooter
    Multi Format
    Posts
    5,684
    Blog Entries
    3
    Images
    19
    You must be in sales or accounting?

    Mark Barendt, Ignacio, CO

    "We do not see things the way they are. We see things the way we are." Anaïs Nin

  5. #5

    Join Date
    Jan 2004
    Location
    NYC
    Shooter
    Medium Format
    Posts
    1,182
    If you are running 3 prong why are you making a 2 prong for the timmer? It defeats the reasojn for 3 prong, grounding.

    Also since it is a wet area, consider using a ground fault recepticle on that line?

    THe water went out because you grounded the line!

    .
    Anyone can make a Digital print, but only a photographer can make a photograph.

  6. #6
    ic-racer's Avatar
    Join Date
    Feb 2007
    Location
    Midwest USA
    Shooter
    Multi Format
    Posts
    6,184
    Maybe time for a timer upgrade to one with grounded receptacles?

    Or, if you have a lot of free time and like projects, you can run the Aristo off a relay in a box with a 3 prong cord to your mains. That is how I run my 1414 Aristo, to save wear and tear on the timer contacts.

    In your case, you can then power the relay coil from your non-grounded timer. If you ever upgrade to a fancy electronic timer, you won't ever have to worry about its electrical contact rating when powering the Aristo.

    If you look in the picture below it shows how the trigger line from the timer is not grounded and the ground (green line) passes through from mains to the Aristo head.

    In your case, however, I'd just get a new timer.

    Last edited by ic-racer; 07-19-2012 at 09:01 AM. Click to view previous post history.

  7. #7
    ic-racer's Avatar
    Join Date
    Feb 2007
    Location
    Midwest USA
    Shooter
    Multi Format
    Posts
    6,184
    I was thinking of you when I saw this on e-bay. This is the only time I have ever seen the Omega below-the-lens Electronic Shutter for sale.


    BTW I think that picture is showing an OMEGA E3 with rare 5x7 Omegalight and electronic shutter.

  8. #8
    Bill Burk's Avatar
    Join Date
    Feb 2010
    Shooter
    4x5 Format
    Posts
    3,207
    Images
    46
    Quote Originally Posted by markbarendt View Post
    You must be in sales or accounting?

    Even better for the punchline....

    Technical support.

  9. #9
    Bill Burk's Avatar
    Join Date
    Feb 2010
    Shooter
    4x5 Format
    Posts
    3,207
    Images
    46
    Quote Originally Posted by paul ron View Post
    If you are running 3 prong why are you making a 2 prong for the timmer? It defeats the reasojn for 3 prong, grounding.

    Also since it is a wet area, consider using a ground fault recepticle on that line?

    THe water went out because you grounded the line!

    .
    Good one paul ron!

    It was a night filled with the sounds of jackhammers and generators.

    Dreamed I went to Las Vegas and was shooting a beater custom Rolleiflex with eye-level finder modified to make 22 movie frames on 120... dream included its user manual with cinematography tips. Some people didn't like being filmed, and sometimes the camera jammed or the winding spring ran down too fast. Darned detailed dreams, my wife's seminar had been canceled at the last minute because the speaker had something better to do. I was considering giving an impromptu photograpy presentation but didn't have any slides and I even if I had one, I wasn't about to use a memory card with a powerpoint presentation...

    Finished the grounding... and coincidentally the water's back on.

    If you hadn't written this post I would have done a half-baked job. So thank you.

    I found another two-prong socket, I hadn't used the last one. I have grounded the stainless steel sink, the stainless steel timer shelf, the Omega A-R-T timer case and the Aristo head. But I had to run two wires for the missing 42 inches from timer to enlarger plug.

  10. #10
    markbarendt's Avatar
    Join Date
    May 2008
    Location
    Ignacio, CO, USA
    Shooter
    Multi Format
    Posts
    5,684
    Blog Entries
    3
    Images
    19
    Quote Originally Posted by Bill Burk View Post
    Even better for the punchline....

    Technical support.
    I was trying to be nice.
    Mark Barendt, Ignacio, CO

    "We do not see things the way they are. We see things the way we are." Anaïs Nin

Page 1 of 2 12 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin