People live in color steel tile roofed house, how lightning protection? How to do lightning rod?
When there is flammable material under the metal plate, the thickness of stainless steel, hot galvanized steel and titanium plate shall not be less than 4mm, the thickness of copper plate should not be less than 5mm, and the thickness of aluminum sheet should not be less than 7mm.
The metal plate shall be insulated without coating (Note: thin paint protection layer or 1mm thick asphalt layer or 0.5mm thick PVC layer should not belong to insulating coating layer)
The metal plate inflammable materials, sheet thickness of not less than 2mm, stainless steel, galvanized steel, titanium and copper thickness should not be less than 0.5mm, the thickness of the aluminum plate should not be less than 0.65mm, the zinc plate thickness should not be less than 0.7mm.
The connection between the plates shall be a permanent electrical connection with copper zinc alloy welding, welding, crimping, seaming, screw or bolt connection.
