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