overhead transmission lines, if they have been designed for the voltage commonly used at national level for the interconnection lines, and provided they have been designed for a voltage of 220 kV or more,
línte tarchurtha lasnairde, má ceapadh iad le haghaidh voltais a úsáidtear go coitianta ar an leibhéal náisiúnta do na línte idirnaisc, agus ar choinníoll gur ceapadh iad le haghaidh voltais 220 kV nó níos mó,