savannahh98102 savannahh98102
  • 13-02-2024
  • Engineering
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A listed electrical box for use in fire-resistive assemblies is being installed in a 2 hour rated wall. Assuming there are no other electrical boxes on the other side of the wall, this installation does not require and penetration protection as long as the annular space between the electrical box and the wall does not exceed ___?

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