Chapter 7 Wiring

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

400 mm max.

Trunk cable

The length of branch lines branched from the trunk should be within 400 mm.

400

Branch line

 

mm

 

 

Trunk cable

7

Total cable length should be within 1 km.

7-2 Relaying of trunk cables

To relay trunk cables, use the straight joint (ME-JJ-01).

ME-JJ-01

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

7·1