Eaton Electrical MN05001002E - page 27

Intelligent Technologies QCPort System Install Manual
November 2005
MN05001002E For more information visit
www.eatonelectrical.com Page 27
1. Find the voltages for each node using the equation for Long Run.
SUM {[(L n x (0.0045)) + (N t x (0.005))] x I n } <= 4.65V
Device 1 [(18 x (0.021)) + (1 x (0.005))] x 1.0 = 0.383V
Device 2 [(36 x (0.021))+ (2 x (0.005))] x 0.5 = 0.383V
Device 3 [(43 x (0.021)) + (3 x (0.005))] x 0.4 = 0.367V
Device 4 [(95 x (0.021)) + (4 x (0.005))] x 0.3 = 0.604V
2. Add each Devices voltage together to find the total voltage.
0.383V + 0.383V + 0.367V + 0.604V = 1.737V
Results
Since the total voltage does not exceed 4.65V, the system will operate properly.