2006 Code Changes Rule 32-200(b) Fire Pump Conductor

Rule 32-200(b) Fire Pump ConductorsFire pump wiring must be protected against fire exposure to provide continued operation of the fire pumps during a fire. Obviously, you don’t want a fire pump to stop working in the midst of a fire. Appendix B references the NFPA20 standard which offers additional details on the protection of circuits feeding fire pumps against fire damage. The reasons are fairly obvious.
Appendix B also offers some examples on how to satisfy the requirements of Rule 32-200(b) for protecting fire pump circuits by using heat-resistant wiring or enclosing the wiring in fire-resistant building materials. The Appendix B guideline includes:
installing the fire pump conductors in mineral-insulated cable;
installing fire pump conductors in conduit surrounded by a minimum 50 mm of concrete; or
installing the fire pump conductors in a shaft that provides a minimum one hour fire separation from the rest of the building.