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IEEE 848-2015
IEEE Standard Procedure for the Determination of the Ampacity Derating Factor for Fire-Protected Cable Systems
A detailed test procedure is provided for determining the ampacity derating factor in the following cable installation configurations: block-out or sleeve-type cable penetration fire stops, conduits covered with a protective material, tray covered with a protective material, cable directly covered or coated with a fire-retardant material, and free-air drops enclosed with a protective material.
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Institute of Electrical and Electronics Engineers [ieee]
Institute of Electrical and Electronics Engineers [ieee]