NFPA 780 - Lightning Protection Institute

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Handrails as Conductors 4.9.3.2 Permanent exterior metal handrails and ladders that are subject to direct lightning strikes (e.g., on roofs or between roofs) and are electrically continuous shall be permitted to be used as main conductors where the minimum thickness is 1.63 mm (0.064 in). Presentation to LPI Meeting, March 2007
Handrails as Conductors • Concern over decreased human safety. • Rationale is that it is impossible to keep current off of this type of handrail and permitting it’s use as a conductor simplifies implementation. Presentation to LPI Meeting, March 2007
Page 1 and 2: What to expect in the 2007 NFPA 780
Page 3 and 4: Objective Familiarize with major re
Page 5 and 6: Editorial Changes Many revisions ed
Page 7 and 8: Strike Terminations • Clarified p
Page 9: Strike Terminations Committee Meeti
Page 13 and 14: Grounding • No more terminals! El
Page 15 and 16: Surge Protection • New Definition
Page 17 and 18: Watercraft • Entirely rewritten C
Page 19 and 20: Annexes • Held major revisions to
Page 21 and 22: Equipotential Bonding Problem: AHJs
Page 23 and 24: Equipotential Bonding Root cause A
Page 25 and 26: Initiatives for Next Cycle • Comp
Page 27 and 28: NFPA 780 is your standard. Particip
Page 29 and 30: Presentation to LPI Meeting, March

NFPA 780 - Lightning Protection Institute

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