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Thread: Replacing Flourescent Ballast

  1. #1
    DIY Junior Member Malibu Jim's Avatar
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    Default Replacing Flourescent Ballast

    The prevous owner had some flourescent lights hard wired in the closets of our home. These light assemblies are about 42" long and contain 2 ea F13T5 bulbs, about 20" long. They are giving out and replacing the bulbs doesn't help, so it must be the ballasts! Tried to buy the ballasts locally, to no avail, so I ordered some off the internet. The orig ballasts have a p/n E2813NP on them, Electronic Ballast, for (2)F8T5 and/or F13T5 lamps. There are blk & wh power wires exiting the case, along with 4 red & 4 blue wires for the flour. lamps. The ballast I received is a solid state electronic ballast, for T5, T8 & 2x F21T5 lamps. The sales slip accompaning them says Fulham Workhorse long case ballast, WH2-120-L, operates (2) F13 T5 lamps. But, other than the B&W power wires, there are 2 red and 1 yellow wire exiting the case. While the old ballasts have a wiring diag on the case, the new ones don't, and I'm at a loss as to how to wire them.

  2. #2
    Plumber jimbo's Avatar
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    The new ballast should come with a wiring diagram. You may need to reconfigure the wiring to the tombstones.


    Here are the instructions:
    Diagrams for T5 Linear with a bulb set 2xF13

    Diagram 1 for Workhorse 2 Diagram 1 for Workhorse 4 Diagram 1 for WHAM 2 Diagram 1 for Longhorse 2 Diagram 1 for Longhorse 4
    Last edited by jimbo; 12-02-2008 at 06:35 AM.

  3. #3
    DIY Junior Member Malibu Jim's Avatar
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    Thanks. The ballasts came w/o any schematic, but I should've thought about checking the mfg web site.
    Thanks again

  4. #4

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    Just make sure you install one of these when you replace the ballast to meet code requirements:

    http://idealindustries.com/products/...tnd_2-wire.jsp
    http://www.inspectpa.com/forum/forum.php
    My answers are based mostly on the ICC codes. Advice given is my personal opinion and every person performing work should acquire a permit from his/her jurisdiction and get the work inspected. My opinions are not directions to follow for DIYs or professionals

  5. #5
    Plumber Cass's Avatar
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    Just curious if they are required on residential...

  6. #6
    Moderator & Master Plumber hj's Avatar
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    Default code

    The specification states for non-residential use.

  7. #7
    Electrical Contractor/Instructor jwelectric's Avatar
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    Quote Originally Posted by Cass View Post
    Just curious if they are required on residential...
    (G) Disconnecting Means.
    (1) General. In indoor locations other than dwellings and associated accessory structures, fluorescent luminaires that utilize double-ended lamps and contain ballast(s) that can be serviced in place shall have a disconnecting means either internal or external to each luminaire. The line side terminals of the disconnecting means shall be guarded.

    I don't think so

  8. #8

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    Quote Originally Posted by hj View Post
    The specification states for non-residential use.
    This is true.....
    http://www.inspectpa.com/forum/forum.php
    My answers are based mostly on the ICC codes. Advice given is my personal opinion and every person performing work should acquire a permit from his/her jurisdiction and get the work inspected. My opinions are not directions to follow for DIYs or professionals

  9. #9
    Electrical Contractor/Instructor jwelectric's Avatar
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    Quote Originally Posted by jar546 View Post
    This is true.....

    But still a good idea in my opinion

  10. #10
    Plumber jimbo's Avatar
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    Just curious....with respect to this disconnect plug, and the code, would all the following fall under the "residential" defintion:

    apartment building ( small ones. multistory ones.)
    hotel rooms
    office, lobby, or public spaces in hotel
    laundry room at a condo complex
    a house now permitted as a 6-person assisted living facility.


    Just want to have a feel about how broad the application of this code section is.

  11. #11
    Electrical Contractor/Instructor jwelectric's Avatar
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    Quote Originally Posted by jimbo View Post
    Just curious....with respect to this disconnect plug, and the code, would all the following fall under the "residential" defintion:

    apartment building ( small ones. multistory ones.)
    hotel rooms
    office, lobby, or public spaces in hotel
    laundry room at a condo complex
    a house now permitted as a 6-person assisted living facility.


    Just want to have a feel about how broad the application of this code section is.
    In NC these would be commercial buildings and the disconnect for lights with ballast would require a disconnect

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