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Thread: Need help.. Light fixture with two ground wires???

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    DIY Junior Member kali2024's Avatar
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    Default Need help.. Light fixture with two ground wires???

    Hi all, so I've got a light fixture with a black, a white and what looks like two ground wires.. what do i do with these? The house box/outlet has a black, white and ground. Thanks in advance.Name:  photo.jpg
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    DIY Junior Member kali2024's Avatar
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    I meant to say that I've never seen two copper wires in a fixture before.. do I tie them together to the end of the ground from the house and put that cap thingie on? (house ground is attached to ground screw but has about two inches hanging)

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    Retired Defense Industry Engineer jadnashua's Avatar
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    Tie both of the ground leads into the ground from the power cable.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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    DIY Junior Member kali2024's Avatar
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    Thank you!!! Just out of curiosity... why was the fixtures supplied with two copper wires? What's the point? Wouldn't one be enough?

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    DIY Member ImOld's Avatar
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    Quote Originally Posted by kali2024 View Post
    Thank you!!! Just out of curiosity... why was the fixtures supplied with two copper wires? What's the point? Wouldn't one be enough?
    It has to do with making all metal or conducting parts the same electrical potential to avoid shocks.

    It's called "bonding".

    When you manufacture a piece of electrical equipment, even though the parts look to be attached to each other securely, electrically they may be insulated by paint or poor assembly.

    The fixture has a UL label which means it has been tested with the two wires as a requirement.

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    DIY Junior Member kali2024's Avatar
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    Makes sense.Thank you for taking your time to answer.

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    Retired Defense Industry Engineer jadnashua's Avatar
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    If for some reason, the nut came loose, allowing parts to separate, they wouldn't all be grounded. Can't see what's inside, but there may be a similar situation.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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    Moderator & Master Plumber hj's Avatar
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    Smile wire

    The second ground wire may be connected to the socket, which could be housed in plastic and thus isolated from the housing.
    Licensed residential and commercial plumber

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