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

  1. #11
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    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
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    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????

  3. #13
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    Quote Originally Posted by wbdvt View Post
    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????
    NFPA 70E Table 130.7(c)(9)(a) below states minimum PPE requirement for below 240V also.

    http://jadelearning.com/jadecc/cours...7(C)(9)(a).pdf

  4. #14
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    Quote Originally Posted by Sahib View Post
    NFPA 70E Table 130.7(c)(9)(a) below states minimum PPE requirement for below 240V also.

    http://jadelearning.com/jadecc/cours...7(C)(9)(a).pdf
    NO!
    You're referring to a 2004 edition and we're up to 2015. In fact, that will soon be outdated with the 2018 version. 70E is in effect when issued so you need to stay current with the latest edition.

  5. #15
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    mayanees:
    Operating breakers is recognized as a potential arc flash hazard (see 2nd line item on Page 35 of the 2015 NFPA 70E).

  6. #16
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    Quote Originally Posted by Sahib View Post
    mayanees:
    Operating breakers is recognized as a potential arc flash hazard (see 2nd line item on Page 35 of the 2015 NFPA 70E).
    That is only if the 4 conditions cannot be met which usually can especially for larger breakers that are under a maintenance program.

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