Transmission at 220 kv. on the Southern California Edison system: A symposium

Length of line was to be 275 miles. This was determined by the fact that the present Big Creek lines from Big Creek to Eagle Rock Substation are 243 miles in length and the lines from Eagle Rock to Laguna Bell Substation are 26 miles or a total length of 269 miles. Assuming that the future lines would terminate at Laguna Bell or in the same neighborhood, the round figure of 275 miles was used.