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    yixun's Avatar
    yixun Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 11, 2011, 11:34 PM
    Electrical cables and wires are always covered with rubber or plastic why
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Jan 12, 2011, 03:35 AM
    Otherwise the electricity would escape and get away.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #3

    Jan 12, 2011, 05:54 AM
    Quote Originally Posted by yixun View Post
    Electrical cables and wires are always covered with rubber or plastic why
    And this is not even 100% true. Things like URD cable are intended for direct burial in the ground and are individual conductors.

    Well, that and the escaping electric thing. :D
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #4

    Jan 12, 2011, 07:18 AM

    Because the NEC says that all conductors will be insulated. The grounding conductor (usually bare) does not have to be insulated.

    And of course the escaping and pooling of electrons on the floor.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #5

    Jan 12, 2011, 07:26 AM

    Those pesky electrons!
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
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    #6

    Jan 12, 2011, 09:59 PM
    All good answers but remember it doesn't apply to motors. Smoke powers motors... when the smoke starts coming out the motor quits... nothing to do with electrons.
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