This standard provides a test procedure 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; Trays covered with a protective material; Cable directly covered or coated with a fire-retardant material; Free-air drops enclosed with a protective material. The standard is applicable to cables installed and sized to IEEE Std 835(TM) for conduits and free-air drops, and NEMA WC51/ICEA P-54-440 for cable tray. IEEE Std 135(TM) does provide ampacities for cables in a tray with a fixed spacing and may be used for cable penetration fire stop configurations only. This standard does not endorse the use of or provide application guidance for the installation of cable penetration fire stops and fire-protective materials. Cable designs are available that can withstand and remain functional during direct exposure to a fire. The user should refer to IEEE Std 634(TM) for the qualification requirements of cable penetration fire stops.
- Standard Committee
- PE/IC - Insulated Conductors
- Status
- Active PAR
- PAR Approval
- 2024-09-26
- Superseding
- 848-2015
Working Group Details
- Society
- IEEE Power and Energy Society
- Standard Committee
- PE/IC - Insulated Conductors
- Working Group
-
D13W/P848_WG - Standard Procedure for the Determination of the Ampacity Derating Factor For Fire-Protected Cable Systems
- IEEE Program Manager
- Dalisa Gonzalez
Contact Dalisa Gonzalez - Working Group Chair
- Robert Konnik
Other Activities From This Working Group
Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.
No Active Projects
Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.
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.
These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.
No Superseded Standards
These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.
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These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.
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