Section 3 Installation
Primary Network Configuration
9ARD000015-600
67
Calculation method
:
Total network length = 700 feet
Total electric current = 0.1 A + 0.15 A + 0.05 A + 0.25 A + 0.1 A = 0.65 A
electric current limit for 700 feet = 1.5 A
Conclusion:
All configurations are acceptable for this network.
Single supply center-connected
If the Single supply end-connected calculation indicates that the power supply must
not be placed at the end of the network, then use the following steps to determine the
validity of the power supply connected at the physical center of the network. A
single center-connected supply provides double the total of the electric current
capability than the single end-connected supply.
1.
Add the electric current ratings of the devices in each section (refer to
) to determine the total electric current in each section. As the supply
is center-connected, the bus has two sections (one on each side of the power
tap).
2.
For the maximum electric current capability of thick cable trunk line in each
section based on section length, including the power supply drop cable, refer to
and
.
Figure 23. Single Supply End-Connected
Power Tap
Power
Supply
