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Thread: luminaire disconnects

  1. #1
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    luminaire disconnects

    Bought a jar of Ideal fixture disconnect plugs at the supply house today for a lighting job I was finnishing up and the counter guy told me that I was the first person to buy any. He said thier supplier had sent them to them at the first of the year and he didn't know why. I explained to him that they became mandatory on Jan. 1, 08. Apparently I'm the only contracter around here that is either aware of the change or cares. I may have let the cat out of the bag as the inspector was wondering what those orange things were.:smile:

  2. #2
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    The fixtures have been coming with them already on since before January, so buying them seems needless. I'm not aware of any requirement that you refit old fixtures with ballast disconnects when you do a ballast changeout, etc.

  3. #3
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    Quote Originally Posted by mdshunk
    The fixtures have been coming with them already on since before January, so buying them seems needless. I'm not aware of any requirement that you refit old fixtures with ballast disconnects when you do a ballast changeout, etc.
    I guess I got old new fixtures.:smile:

  4. #4
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    Quote Originally Posted by mdshunk
    ..... I'm not aware of any requirement that you refit old fixtures with ballast disconnects when you do a ballast changeout, etc.
    But would be a good idea to do nonetheless.

  5. #5
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    Quote Originally Posted by 480sparky
    But would be a good idea to do nonetheless.
    Oh, yeah. I'm definately doing it. On the bill it's a "UL 2459 safety disconnect" and it costs 10 dollars.

  6. #6
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    Ideal disconnects

    Quote Originally Posted by mdshunk
    Oh, yeah. I'm definately doing it. On the bill it's a "UL 2459 safety disconnect" and it costs 10 dollars.
    I was at a supply house the other day and there were a cup of orange Ideal luminaire disconnects on the counter. Counter man said salesman wanted him to buy 5000, but they said they could not afford that many!:rolleyes:

  7. #7
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    Quote Originally Posted by mdshunk
    Oh, yeah. I'm definately doing it. On the bill it's a "UL 2459 safety disconnect" and it costs 10 dollars.
    Thanx Marc. Thats what I'm going to call em and thats what I'll charge.:smile:

  8. #8
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    Were being told in Vt. that if we do a ballast change that we have to install a disconnect, I can understand that, if you do a lighting retrofit and change out 500 ballasts it wouldn't make sense to require them only in new fixtures. I'm not sure what the nec intent actually is.
    (Do the job right boy or don't do it at all.)

  9. #9
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    Can somebody give me a rundown on this code? I dont own a 2008 NEC yet, and I just bought (70) 8' strip lights to install in a retail space. Do I need to install these disconnects? Ive seen these items in catalogs but have not come to a situation where I may need them until now. Any info would be great

  10. #10
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    2005 code change.


    #16. 410.73 GENERAL

    This rule was added to require disconnecting means for fluorescent luminaires that have double-ended lamps and contain ballasts. However, it isn't effective until Jan. 1, 2008.

    (G) Disconnecting Means. 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 or re-ballasted must have a disconnecting means, to disconnect simultaneously all conductors of the ballast, including the grounded (neutral) conductor if any. The disconnecting means must be accessible to qualified persons. This requirement will become effective January 1, 2008 (Basically a 2008 NEC requirement).

    Author's Comment: Changing the ballast out while the circuit feeding the luminaire is energized has become a regular practice, because a local disconnect isn't available. Also, ballasts are often serviced from a ladder, adding the possibility of increased injury from a fall. The rule requires the disconnecting means to open “all circuit conductors,” including the grounded (neutral) conductor. If the grounded (neutral) conductor in a multiwire circuit isn't disconnected at the same time as the ungrounded conductor, a false sense of security could result in an unexpected shock, and its consequences from the grounded (neutral) conductor.

    Ex 1: A disconnecting means isn't required for luminaires installed in hazardous (classified) location(s).

    Ex 2: A disconnecting means isn't required for emergency illumination required in 700.16.

    Ex 3: For cord-and-plug-connected luminaires, an accessible separable connector or an accessible plug and receptacle is permitted to serve as the disconnecting means.

    Ex 4: A disconnecting means isn't required in industrial establishments with restricted public access where written procedures and conditions of maintenance and supervision ensure that only qualified persons service the installation.

    Ex 5: Where more than one luminaire is installed and supplied by other than a multiwire branch circuit, a disconnecting means isn't required for every luminaire when the design of the installation includes locally accessible disconnects, such that the illuminated space won't be left in total darkness
    "Electricity is actually made up of extremely tiny particles called electrons, that you cannot see with the naked eye unless you have been drinking."

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