This Recommendation provides guidelines for the installation of telecommunication equipment and/or antennas on utility poles. These guidelines cover the clearances from the power conductors, the requirements for insulation, earthing and bonding, and the protective procedures to avoid interference and damage from the electromagnetic fields generated by the nearby power conductors and lightning flashes. The power distribution lines considered are those operating in alternating or direct current, with nominal voltages up to 25 kV. These lines may be used for power distribution, street lighting, or electrified railways.