High voltage electric power transmission lines : NUMBER@1 kV RMS and up -LRB- NUMBER@2 kV RMS was the record as of NUMBER@3 -RRB- Lightning : Varies greatly , often around NUMBER@4 MV .

High voltage electric power transmission lines : NUMBER@1 kV RMS and up -LRB- NUMBER@2 kV RMS is the record as of NUMBER@3 -RRB- Lightning : Varies greatly , often around NUMBER@4 MV .
