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Thread: No Arc Flash label on control panel - What PPE is required.

  1. #11
    Join Date
    Feb 2013
    Location
    India
    Posts
    1,742
    For example, consider a 120V breaker. No PPE may be required to operate it, provided it is maintained in safe condition. But if it is one of hundreds of series rated breakers with the possibility of being replaced with wrong size in the field, your company should impose policy of wearing PPE to operate even it.

  2. #12
    Join Date
    Mar 2013
    Location
    Rutland, VT, USA
    Posts
    215
    Quote Originally Posted by Sahib View Post
    For example, consider a 120V breaker. No PPE may be required to operate it, provided it is maintained in safe condition. But if it is one of hundreds of series rated breakers with the possibility of being replaced with wrong size in the field, your company should impose policy of wearing PPE to operate even it.
    Huh??? First off, since 120V is single phase, incident energy calculations are 3 phase per IEEE 1584-2002 and in Annex D of NFPA 70E. So the incident energy is considered so small it is exempt from analysis.

    I also fail to see any connection between the hundreds of series rated breakers and wearing PPE to operate a breaker????

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