A conduit penetrates a tested fire-resistance-rated wall. How should the opening be restored?
- A listed matching firestop system
- BLeave space for conductor cooling
- CFill it with ordinary painter’s caulk
- DPack it loosely with fiberglass
Why A is correct
Rated construction depends on an approved penetration system installed to its details. Generic caulk, loose insulation, or an open annular space does not demonstrate restoration of the rating.