Simply so, what is IE rule for earthing?
Rule 90 is about earthing and states that all metal supports and metallic fittings should be permanently and efficiently earthed. Each stay-wire should be efficiently earthed or an insulator provided in it at a height not less than 3.0 m from the ground.
Furthermore, what is down conductor lightning protection? Downleads or down conductors are the elements of the main conductor system that generally bring the lightning from the roof level system to the grounding system. This may include cable conductor, or qualified continuous steel framework of 3/16” thickness or greater, or a combination.
Also to know, how do you protect electronics from lightning strikes?
One way to make sure your electronics are always protected from lightning is to install transient voltage surge protectors. According to Allstate, transient voltage surge protectors are connected to computers and other electronic equipment to limit voltage to 1.5 times the normal voltage.
How do you calculate lightning protection?
Down Conductors As per Base Area of Structure (s) =1+(Ab-100)/300
- Down Conductors As per Base Area of Structure (s) =1+(Ab-100)/300.
- Down Conductors As per Base Area of Structure (s) =1+(1680-100)/300.
- Down Conductors As per Base Area of Structure (s) =6 No's.
- Down Conductors As per Perimeter of Structure (t)= P/30.
