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3.1.9.3.(5)
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Application
Application 1: 
Combustible outlet boxes installed in an assembly required to have a fire-resistance rating where the opening through the membrane into the box is not more than 0.016 m2, in buildings described in Sentence 1.3.3.2.(1) of Division A.
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Intent
Intent 1: 
To exempt certain service equipment from the application of Sentence 3.1.9.2.(1) if certain conditions are met, on the basis that the equipment is deemed to insignificantly contribute to the growth and spread of fire.
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