Fire Rated Systems

Penetrations · Changed services

What happens when cables are added to an existing penetration?

Short answer

Adding cables can change the configuration the original penetration system was tested or assessed for. The new cable loading, bundle size, spacing and any disturbance to the existing seal all need checking against the system evidence.

What to do next

Send the tag, the schedule reference, the drawings you have and photographs of the actual condition. We will tell you what they show, what they cannot, and what else is needed before anyone gives a conclusion.

General information only. A conclusion about a specific condition requires the actual construction, the evidence behind it and the site condition to be reviewed.