Which testing method is used for firestops that protect electrical cables?

The testing method that is specifically used for firestops protecting electrical cables is UL 1479. This standard evaluates the firestop systems that are designed to seal openings and joints to maintain the integrity of fire-rated walls and floors. It focuses on the performance of firestop products in preventing the spread of fire and smoke through openings created for cable penetrations, which is crucial for ensuring safety in buildings.

UL 1479 provides rigorous testing protocols that help determine how well a firestop assembly can withstand fire exposure. The results are critical for certifying that these systems are effective in limiting the transfer of fire and smoke between different compartments of a structure.

In contrast, ASTM E119 relates to the standard test methods for fire tests of building constructions and materials, but it is broader and does not specifically address firestop systems for electrical cables. NFPA 72 covers fire alarm systems, focusing on performance and installation guidance rather than firestop materials. ISO 9001 is a quality management standard and not related to fire testing at all.