1. (1) You must maintain clearances between window cleaners and power lines as indicated in Tables 2 and 3.

   Table 2

   Minimum Clearances from Power Lines – Insulated Lines

   Voltage	Minimum distance	Alternatives
   Less than 300 volts	3 feet (0.9 m)	----
   300 volts to 50 kv	10 feet (3.1 m)	----
   More than 50 kv	10 feet (3.1 m) plus 0.4 inches (1.0 cm) for each 1 kv over 50 kv	2 times the length of the line insulator, but never less than 10 feet (3.1 m)

   Table 3

   Minimum Clearances from Power Lines – Uninsulated Lines

   Voltage	Minimum distance	Alternatives
   Less than 50 kv	10 feet (3.1 m)	----
   More than 50 kv	10 feet (3.1 m) plus 0.4 inches (1.0 cm) for each 1 kv over 50 kv	2 times the length of the line insulator, but never less than 10 feet (3.1 m)

2. (2) You must follow these procedures when window cleaners need to get closer to power lines than allowed in Tables 2 and 3:

   1. (a) Notify the utility company or electrical system operator of the need to work closer than the minimum clearances to power lines before starting the work;
   2. (b) Begin the work only when the utility company or electrical system operator has deenergized or relocated the lines, or installed protective coverings to prevent accidental contact with the lines.

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060, and chapter 49.17 RCW. WSR 14-09-095, § 296-878-17005, filed 4/22/14, effective 7/1/14. Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 02-22-027, § 296-878-17005, filed 10/28/02, effective 1/1/03.]