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 ~ National Lightning Safety Institute ~

Section 6.20

Matrix of Lightning Protection Subsystems

…which subsystem should be applied where and why?...

 

 

 Direct Strike

 Indirect Strike Exterior Location Interior Location People Safety Structure Safety

NFPA-780 air terminals

yes

no

yes

no

no

yes

Down-conductors

yes

no

yes

yes

no

yes

Bonding

yes

yes

yes

yes

yes

yes

Grounding

yes

yes

yes

yes

yes

yes

Shielding

yes

yes

yes

yes

yes

yes

Surge protection

yes

yes

yes

yes

yes

yes

Detection

yes

yes

yes

yes

yes

yes

Policies & procedures

yes

yes

n/a

n/a

yes

yes

 

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