Long link to fire self rescue rope federal requirement.

Looks like minimum harness strength they give is 300 lbs.

I know a rappel can generate over 1000 lbs if you slip
a bit and load the system.



http://72.14.253.104/search?q=cache:9IKW7EgvfYgJ:www.homelandsecurity.az.gov/documents/TSCDocs/NFPA/NFPA1983-01ed.pdf+NFPA+1983%E2%80%932001&hl=en&ct=clnk&cd=1&gl=us&client=firefox-a