| In electric power, power lines obstruction: the portion of the sub-transmission system pertaining to the lines or wires [Section 4(r), Anti-Obstruction of Power Lines Act of 2019; Section 4(oo), DOE Department Circular No. DC2020-02-0002, The Implementing Rules and Regulations of Republic Act No. 11361, Otherwise Known as the “Anti-Obstruction of Power Lines Act”] |