Penetrations and holes resulting from removal of conduit or popping shall be sealed with which method?

Penetrations and holes resulting from removal of conduit or popping shall be sealed with which method?

• A. Fire-rated putty
• B. Listed liquid tight sealing devices
• C. Electrical tape
• D. Concrete plugs

Answer: (B)

Penetrations created by removing conduit or causing a hole must be sealed with devices that are recognized and tested for that specific purpose. Listed liquid-tight sealing devices are designed to restore the enclosure’s protective barrier around conductors, providing a reliable liquid-tight seal and preserving the assembly’s listed performance. This ensures moisture resistance and maintains compliance with electrical and fire-stop requirements, which is essential in environments exposed to heat, oil, or moisture. Other methods don’t provide the same guaranteed performance: fire-rated putty helps with fire resistance but doesn’t guarantee a liquid-tight, listed seal around a conduit; electrical tape isn’t a durable, code-approved seal for penetrations; concrete plugs are not universally applicable and don’t maintain the required listing for all wall types or penetrations.

Penetrations created by removing conduit or causing a hole must be sealed with devices that are recognized and tested for that specific purpose. Listed liquid-tight sealing devices are designed to restore the enclosure’s protective barrier around conductors, providing a reliable liquid-tight seal and preserving the assembly’s listed performance. This ensures moisture resistance and maintains compliance with electrical and fire-stop requirements, which is essential in environments exposed to heat, oil, or moisture.

Other methods don’t provide the same guaranteed performance: fire-rated putty helps with fire resistance but doesn’t guarantee a liquid-tight, listed seal around a conduit; electrical tape isn’t a durable, code-approved seal for penetrations; concrete plugs are not universally applicable and don’t maintain the required listing for all wall types or penetrations.