2. Wiring of PCS-DS51
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“Work without tubing” and “Work with tubing” are done in the following procedures.
Work without tubing
•
To protect the cables, use the floor duct or wire protector cable cover.
Don’t mix them with strong current lines.
•
To prevent damages of the cables, they are wired between walls or under the floor below the
device that don’t cause problems due to electromagnetic induction.
•
When the cables are parallel with, close to, or intersecting the low-voltage indoor wiring,
comply with the cable isolation standard (Table 2.12 and 2.13).
•
When wiring vertically or installing it on the wall to separate it from the floor, prevent
damages on the cable.
•
When bending the cable, the bending radius should not be below the minimum allowable
bending radius.
Work with tubing
Use a pull box where the cables are connected or duct lines with different radius are connected.
The length of the duct line between neighboring pull boxes should be within 20 meters. When
the duct lines are straight and on the same horizontal plane, the length may be within 25 meters.
•
Don’t mix the cables with strong current lines in the same duct line.
•
When bending the duct, measure the angle as shown in Figure 2.42 so that the angle should be
within 90 degrees.
•
When bending the duct, the bending radius should be more than six times of the duct diameter
and the cables in the duct should not exceed the minimum allowable radius (Figure 2.43).
•
The number of bending parts in one section should be within 3. The total bending angle should
be within 180 degrees.
•
The metal duct should be grounded (type 3 grounding).
More than six times of
the duct diameter
Within 90 degrees
Figure 2.45 Bending of Duct
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