Historical
IEEE 848-1996 (R2003)
IEEE Standard Procedure for the Determination of the Ampacity Derating of Fire-Protected Cables
A detailed test procedure is provided for determining the ampacity or 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.
Institute of Electrical and Electronics Engineers [ieee]