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Ontario OBC - electrical room fire resistance rating

Discussion in 'Electrical Codes' started by Kevin0616, May 14, 2020.

  1. Kevin0616

    Kevin0616 Registered User

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    What is the fire resistance rating for the electrical room in Ontario's building code, 1 hour, 1.5 hours, or 2 hours? Thanks,
     
  2. cda

    cda Sawhorse

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    What kind of electrical room?

    What type of occupancy?

    What all electrical equipment is in it?

    Fire sprinkler?
     
  3. Kevin0616

    Kevin0616 Registered User

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    Yes, fire sprinkler,
     
  4. cda

    cda Sawhorse

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    And Than??
     
  5. tmurray

    tmurray Registered User

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    It depends on what is in it. Typically 1 hour unless you have something very strange like transformers in it.
     
  6. tmurray

    tmurray Registered User

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    Also, 1.5 hours only exists for things like fire doors and fire dampers. For actual fire separations, it is 0hr, 45min, 1hr, 2hr, 4hr.

    0hr sounds like a weird one, but it is intended as a smoke control only. Fire separations are barriers that control the spread of fire and smoke. A fire resistance rating is the time in minutes or hours a particular assembly will resist the passage of flame and is assigned to a fire separation.
     

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