1.- CAPTURING HEAD: the peak has to be located 2 m. above the highest parts of the area to be protected.

2.- ADAPTOR ELEMENT: it has to provide the electrical contact between the capturing point and the downgoing conductor. It is put on the mast, on light poles, pillars, etc...

3-5.-MAST- MAST FIXATION: the mast provides the appropriate height corresponing to the area to be protected by the lightning rod and is usually mounted with 2 or 3 fixings depending on its length.

6.- DOWN-CONDUCTOR: it leads the current of the lightning stroke from the capturing head to the earth electrode. The conductors can be of sheet, plain twist, twisted or round cable, and the minimum area has to be 50 mm2.

Each lightning rod has to have at least on down-conductor, except in the following cases, where two down-conductors are needed:

-structures higher than 28 m.

-the horizontal projection is larger than the vertical projection

The path has to be the most rectilinear possible with the shortest distance, avoiding curves. The covering radius should not be less than 20 cm. The down-conductor should avoid crossing or the proximity of electrical or telecommunication networks.

When the crossing cannot be avoided, then the line has to be inside of a metallic shield which needs to be extended 1 m on each side of the crossing.

Cornices or elevations should be avoided. A maximum height of 40 cm is allowed with an angle of up to 45º.

7.- CONDUCTOR HOLDING FIXTURES: Independent of the fixture type, three fixtures per meter are used for the down-conductor. The fixtures must not be in direct contact with inflammable material.