A branch circuit supplying emergency lighting luminaires must be installed in a manner that ensures its integrity during a fire. Which of the following wiring methods, when installed in accordance with CEC, would NOT typically be considered suitable for maintaining circuit integrity for a specified duration during a fire, without additional fire-rated enclosures or systems?
Mineral-insulated, metal-sheathed cable (MI cable)
Electrical metallic tubing (EMT) with thermoplastic insulated conductors
Rigid metal conduit (RMC) with fire-rated conductors
Fire-rated cable (e.g., as defined in ULC S139)
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