14
IC System
TM
Design Guide, v2.3
Example 2
– An installation requires 500 ICMs on a single wire path and the Trunk wire length will be up
to 9,000 feet (2,700 meters). Utilizing the sizing chart the Trunk wire should be designed using 12 AWG
(4.0 mm
2
) wire. NOTE: 12 AWG (4.0 mm
2
) wire will be used for the Trunk wire only. 14 AWG (2.5 mm
2
)
wire can be used for all branch lines as long as each branch does not exceed 25% of the total Trunk wire
length. In this example, any branch that is less than 2250 feet (685 meters), 25% of the Trunk wire
length, can be installed with 14 AWG (2.5 mm
2
) wire.