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Vegetation Clearances for Distribution <br /> Clearance when trimmed <br /> • <br /> • * 5 feet minimum • f clearance if tree is <br /> readily climbable <br /> * 3 feet minimum clearance if <br /> tree is not readily climbable <br /> 4 n 4 4 <br /> Danger <br /> tree <br /> removal <br /> area • <br /> 1 foot clearance for <br /> di secondaries and <br /> neutrals <br /> 1 \) ( <br /> The amount of clearance <br /> required during trimming <br /> varies due to: <br /> 1. Cycle length <br /> 2. Tree species <br /> 3. Growing conditions <br /> 4. R.O.W. limitations <br /> 5. Utility policy <br /> Secondary - Under 600V <br /> • Distribution - 601V to 50,000V <br /> Transmission - Over 50,000V <br /> Lineman climbing <br /> zone- <br /> • 3 feet pole <br /> clearance <br /> Non - compatible tree recommended <br /> removal area <br /> 1 , <br /> 1. Note: All voltages are phase to phase, nominal. <br /> * 2. Note: Minimum indicates clearance required at all times. <br /> * 3. Note: The motion of poles, conductors and trees under adverse weather conditions must be considered <br /> in maintaining minimum clearances. <br /> 4. Defination: Readily climb e - Having sufficient handholds and footholds to`permit an average person to climb <br /> easily without using a ladder or other special equipment. <br />