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Electrification FS Conductor Bar System Instruction Manual
October 2019
Page
23
of
34
7.3.(d):
Set and hold appropriate gap while installing the expansion.
NOTE: Tools Required: 3/8” Wrench or Socket
7.4: Expansion
Gap
Settings
NOTE: Failure to pre-set the air gap correctly could cause buckling of the conductors. Each expansion
section must have a gap set at the time of installation. Refer to the following table for the
appropriate settings.
Range of Air Temperatures
During the Year
Air Temperature During
Installation, With Bar at Air
Temperature
Total Gap Width Setting per
Expansion Section*
0° F to 100° F
25° F
50° F
75° F
1 ¾”
1 ¼”
¾”
25° F to 125° F
50° F
75° F
100° F
1 ¾”
1 ¼”
¾”
50° F to 150° F
75° F
100° F
125° F
1 ¾”
1 ¼”
¾”
* Expansion sections with two gaps should be set so they are approximately equal to each other, and the
sum is equal to the table above.