Electro-static discharge and wiring

Discussion in 'General Electronics Chat' started by jjj059, May 6, 2009.

  1. jjj059

    Thread Starter New Member

    Aug 1, 2008
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    Whenever electro-static discharge is discussed, it is usually in reference to electronic units and their susceptibility to ESD.

    But what about the wiring on its own? I deal with automotive grade wiring and the dielectric test only goes to 1000 V. What if I had a wire connected to ground and I zapped it with 8 kV or more from an ESD tool? Would it cause damage?
     
  2. Von

    Active Member

    Oct 29, 2008
    65
    0
    Assuming nothing is connected to the other end, any damage would be limited to holes in the insulation where it broke down and allowed an arc to some lower potential [nearby] item (such as the car's frame or chassis).
     
  3. jjj059

    Thread Starter New Member

    Aug 1, 2008
    8
    0
    What if the other end did have a solid connection to chassis ground? There wouldn't be a place for an arc to occur, but there would be an instantaneous current. Would that damage the wire? The human model is a 150pF capacitor, so at 8 kV you would have only about 5 mJ of energy.
     
  4. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    With wire instantaneous current isn't a big deal. If you melt a microscopic dot of wire so what? Only with semiconductors does that microscopic blob mean anything.

    Have you read this?

    ElectroStatic Discharge
     
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