TM 5-3810-302-10
O P E R A T I O N S ADJACENT TO OVERHEAD LINES IS
P R O H I B I T E D UNLESS ONE OF THE FOLLOWING
C O N D I T I O N S IS SATISFIED.
POWER HAS BEEN SHUT OFF AND POSITIVE MEANS
1
TAKEN TO PREVENT LINES FROM BEING ENERGIZED.
VOLTAGE REQD CLEARANCE
POSITION AND BLOCK
EQUIPMENT INSURING
UNDER 69 KV -10
FEET
NO PARTS, INCLUDING
2
69 KV -12
FEET
CABLE, CAN COME
115-161 KV -15
FEET
WITHIN THE FOLLOW-
230-285 KV 20
FEET
ING CLEARANCES:
345 KV 25
FEET
500 KV -35
FEET
COUNT INSULATORS
SUPPORTING LINE TO
DETERMINE LINE
VOLTAGE
LINE
IN A STRING
VOLTAGE
13200
2
3
2-3
23000
2-3
34500
4-5
69000
5-6
88000
6-8
110000
138000
8-10
9-11
154000
230000
12-16
18
345000
Assume all power sources are electrically energized ("hot" or "live") until
you have absolutely reliable information to the contrary.
When operating in the vicinity of power lines, have the power company cut
off the power and ground the lines. Obey the following rules, at all times,
whether the power is cut off or not.
2-45
