Electricity supply systems in buildings, consulte 91.140.50
ICS Ámbito
29.240.01 Power transmission and distribution networks in general
Powerline telecommunications, consulte 33.040.60
29.240.10 Substations. Surge arresters
29.240.20 Power transmission and distribution lines
29.240.30 Control equipment for electric power systems
Measuring instruments for electrical quantities, consulte 17.220.20
29.240.99 Other equipment related to power transmission and distribution networks
Including capacitors for power networks