Overhead lines and cables required to be marked under the provisions of RCW 14.04.340
- 14.04.360, shall be marked by placing a marker as described in WAC 12-24-035
(2) at least every 150 feet on, or within 30 feet of such lines or cables. See "marking of lines and cables or similar obstructions" (WAC 12-24-380
Such markers shall be colored international orange equivalent to federal specifications TT-P-59 or TT-E-489.