Wiring Of Power Lines; Supplemental Notes On Safety - Siemens Desigo TRA Engineering, Mounting And Installation Manual

Note
Safety notes
Cabling,
duct cross-section
Wiring and connection
terminals
Cabling
Device connection
terminals
Tightening torque
Siemens
Building Technologies
6

Wiring of power lines

This section describes the wiring between the transformer and power point(s)
(Room automation station, power supply module, bus connection module).
Detailed information on wiring for AC24V and island bus is available in the TX-I/O
engineering and installation guide CM110562 [8].
6.1

Supplemental notes on safety

Before starting the wiring, please comply with "Important information on safety" in
Section 3. The following notes are closely related to Section 3.2 "Device-specific
regulations"and must be observed accordingly.
Wire the devices in the standard manner in the cable ducts.
Recommendation: Design the duct cross-section with at least 30% in reserve.
Use wiring types and diameters as per the specifications below:
Use standard stranded cable and wiring. The ends can be connected directly or
strengthen with conductor sleeves or pin connectors.
.Important: If low-voltage wiring runs alongside mains voltage, it must
have the same level of insulation as wiring for mains voltage.
The device connection terminals are designed for wiring for:
min. 0.5 mm / AWG24.
2
max. 2 x 1.5 mm / AWG16 or 1 x 2.5 mm
Connection terminals are lifting clams; the contact plate between the wire end
and screw end is easy on the wiring.
.Important: Only the original pluggable connection terminals may be
used as the connection facility.
Set the torque to 0.5-0.6 Nm or 50-60 Ncm (4.4...5.3 in*lbf) when using electrical
screwdriver on the connection terminals.
Desigo TRA Engineering, mounting and installation
Wiring of power lines
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CM111043en_09
2016-02-22