Chapter 7: Wiring Method
7-1 Cable trunk and branch lines
On the illustration of the cable wiring below, a bold line means a trunk and the thin lines branched from the trunk with a "T" shape are called branch lines.
Branch line
400mm max.
Trunk cable
The length of branch lines branched from the trunk should be within 400 mm.
7
400mm | Branch line |
|
Trunk cable
Total cable length should be within 1 km.
7-2 Relaying of trunk cables
To relay trunk cables, use the straight joint
Relaying of trunk cables should be limited to indispensable cases only. Inadvertent relaying of trunk cables may cause a communication fault such as a weakened signal level due to contact resistance in the junction connector (straight).
Junction | Junction |