Minimum Tree to Conductor Clearance for Distribution Voltage

Types of Trimming	Growth Rate	Distribution Voltage
		0 to 4 kV	4 kV to 22 kV	22 kV to 33 kV
Topping Clearance	Fast Growers	6 ft.	8 ft.	9 ft.
	Slow Growers	4 ft.	6 ft.	7 ft.
Side Clearance	Fast Growers	4 ft.	6 ft.	8 ft.
	Slow Growers	2 ft.	4 ft.	6 ft.
Overhead Clearance	Fast Growers	4 ft.	8 ft.	12 ft.
	Slow Growers	2 ft.	6 ft.	12 ft.

Clearances acquired have a direct relationship to the trim cycle for any given work area. Greater clearances are required on fast growing tree species within a work area to maintain trim cycles.