Power cables, with number of cores from 1, 2, 3, 4 5, nominal cross-section of main cores from 1,5 to 1000 mm², for nominal alternating voltage of 0,66 and 1 kV with nominal frequency of 50 Hz, intended for transmission and distribution of electric energy in stationary installations, can be laid in rooms, channels, tunnels, ground (trenches), including places exposed to stray currents.
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