Any electric utility supplying alternating current must design and maintain its distribution system for a standard operating frequency of sixty cycles per second under normal operating conditions.
[Statutory Authority: RCW 80.01.040 and 80.04.160. WSR 01-11-004 (Docket No. UE-990473, General Order No. R-482), ยง 480-100-368, filed 5/3/01, effective 6/3/01.]
