Roger, I am guessing and not looking at the ROP or ROC. Fire stopping with this foam or insulating material is different from the standard fire calking or other type of intumesce material that expands upon the presence of fire. Under normal conditions, heat will not be dissipated so Panel-7 has accepted the requirement to protect type NM cable irrespective of the length of the bundling. [Linked Image]

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Charlie Eldridge, Indianapolis, Utility Power Guy

Charlie Eldridge, Indianapolis Utility Power Guy