vault backup: 2025-12-03 17:11:42

fire-resistive-wiring-methods.md

@@ -2,11 +2,11 @@
 id:
 aliases: []
 tags:
-  - authorship/original
-  - destiny/permanent
-  - status/incomplete
-  - topic/construction/electrical
-  - type/encyclopedia
+ - authorship/original
+ - destiny/permanent
+ - status/incomplete
+ - topic/construction/electrical
+ - type/encyclopedia
 title: Fire Resistive Wiring Methods
 ---
 # Fire Resistive Wiring Methods
@@ -14,11 +14,12 @@ title: Fire Resistive Wiring Methods
 ## Requirements
 
 Permitted methods for fire protection of emergency feeders
-are specified in 700.10(D)(1).
+are specified in [[nfpa-70_700_emergency-systems#700.10(D)(2) Feeder-Circuit Wiring.|700.10(D)(2)]].
 
 ![[nfpa-70_700_emergency-systems#700.10(D)(2) Feeder-Circuit Wiring.]]
 
-the requirements of which only apply to occupancies listed in 700.10(D)(1)
+the requirements of which only apply to occupancies listed in
+[[nfpa-70_700_emergency-systems#700.10(D)(1) Occupancies.|700.10(D)(1)]]
 
 ![[nfpa-70_700_emergency-systems#700.10(D)(1) Occupancies.]]
 
@@ -30,12 +31,43 @@ require fire protection, not [[nfpa-70_100_definitions#Branch Circuit.|branch ci
 > [!info] Keywords
 > * Low Smoke Zero Halogen (LSZH)
 
-* Mineral Insulated (MI) Cable
-* Fire Resistive Metal-Clad (MC) Cable
-* Fire Resistive Cable-in-Conduit (CIC)
+### Fire Resistive Metal-Clad (MC) Cable
 
-> [!info] "Vitalink" vs "Lifeline" cable
+[[nfpa-70_330_mc-cable|330 Metal-Clad Cable: Type MC]]
+
+### Mineral Insulated (MI) Cable
+
+[[nfpa-70_332_mi-cable|332 Mineral-Insulated, Metal-Sheathed Cable: Type MI]]
+
+When terminating single conductors in a ferrous metal enclosure,
+it is necessary to terminate MI cables in a brass plate
+to prevent heating due to ferroelectric hysteresis
+Cut out and replace a section of the enclosure with the plate
+
+When cutting a hole in the enclosure would void its listing,
+or is otherwise not allowed,
+the cables can be terminated through a brass plate into a junction box
+and power brought to the enclosure through a conventional raceway.
+
+> [!info]
+> According to Pyrotenax literature,
+> the intermediate junction box method is obligatory
+> for fire pump controllers.
+
+### Fire Resistive Cable-in-Conduit (CIC)
+
+### Notes
+
+> [!info] "Vitalink" vs "Lifeline" cable ^vitalink-vs-lifeline
 > VITALink® and Lifeline® are brand names
 > (of Omni Cable and Prysmian Group respectively),
 > not cable types.
 > _Both_ brands include MC _and_ CIC cables.
+
+## Resources
+
+[VITALink Fire-Rated Cables | OmniCable](https://www.omnicable.com/vitalink/)
+
+[Lifeline® Fire Rated Cable Systems | Prysmian](https://na.prysmian.com/markets/electrification/industrial-and-construction/building-wire/fire-resistive-cable-systems)
+
+[Chemelex Pyrotenax](https://www.chemelex.com/en-us/pyrotenax)