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induced voltage <=480V = hazard?

Discussion in 'Electrical Safety Practices' started by MIEngineer, Jul 21, 2010.

  1. MIEngineer Member

    Could someone shed some light on this section? When working on equipment <=480V I have not seen the application of safety grounds as standard practice. I don't think the issue of induced voltage is a concern on these types of systems but have no proof or data to support my feeling. Does anyone have information on how I can best explain this to a safety department why this does not need to be done as is the norm on medium & high voltage lines.

    120.1(6) Where the possibility of induced voltages or stored electrical energy exists, ground the phase conductors or circuit parts before touching them. Where it could be reasonably anticipated that the conductors or circuit parts being deenergized could contact other exposed energized conductors or circuit parts, apply ground connecting devices rated for the available fault duty.

    Thank you
    MIEngineer, Jul 21, 2010
    #1

  2. ChevsMark New Member

    I've been around 480 volts or less for better than 35 years and have not heard of grounding that level of voltage after a Safe Work Condition is verified. Generally we just lock out and go after verification.
    ChevsMark, Aug 24, 2010
    #2

  3. THE CABLE GUY Well-Known Member

    There is no capacative effect such in HV cabling that exist in properly grounded 480v systems.
    THE CABLE GUY, Sep 20, 2010
    #3

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