Engineering approach

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Engineering approach

  • Cl. I, Div 2 approach 0% M-T-M 100% safe

    Votes: 0 0.0%
  • Cl. I, Div 2 approach less safe than M-T-M

    Votes: 0 0.0%
  • Equaly safe

    Votes: 2 66.7%
  • Cl. I, Div 2 approach safer than M-T-M

    Votes: 1 33.3%
  • Cl. I, Div 2 approach 100% M-T-M 0% safe

    Votes: 0 0.0%

  • Total voters
    3
  • Poll closed .
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How do people feel about the comparative hazard of a M-T-M automatic closed non-time delayed transfer with SC rating only for open tie versus the Class I, Division 2 classification approach where the primary restriction is that an electrcial equipment should not be the source of ignition - either by arcing or ehat producing - under normal operating conditions.
 
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