- The down conductor should not be installed in gutters or water spouts as the corrosion rate will be higher because of the moisture content.
- Loops on the down conductors should be avoided.
- A down conductor can be installed on the surface of the wall if it is made up of non - combustible material. If the wall is made of readily combustible material, it should be installed at a distance of 0.1m away from the wall by using some mounting brackets. If the 0.1m distance cannot be maintained then the conductor should have a minimum cross section of at 100 mm²
- A metal facade, reinforcing rods of walls or concrete, steel structural frames, a metallic drain pipe can be used as natural down conductors.
- If a down conductor needs to be installed in a cantilevered part of the structure, an additional distance must be left besides the height taken at tip of a man's fingers when he stretches his arm vertically.
In this case,
d > 2.5 + s
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