NEC Quiz: Article 300, Part 6 Answers

by Mark Lamendola

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  1. [300.20(A)]. So as to avoid heating the surrounding ferrous metal via induction.
     

  2. [300.20(A)]. By grouping the ungrounded conductors together.
     

  3. [300.20(B)]. By cutting slots or passing all of the conductors through an insulating wall.
     

  4. [300.22(B)]. They must effectively close any openings in the connection. The reason for this is to prevent the spread of byproducts of combustion from the raceway into the environmental air.
     

  5. [300.23]. Because the panels must be arranged and secured so as to allow the removal of the panels and access to the equipment.