Eaton PowerXL DB1 Installation Manual page 59

3 Installation
3.5 Electrical Installation
The following figure shows the construction of a four-wire, screened motor
line (recommended specifications).
b
a
c
e
d
Figure 23: Four-core shielded motor supply cable
a Cu screen braid
b PVC outer casing
c Flexible wire (copper strands)
d PVC core insulation, 3 x black, 1 x green-yellow
e Textile and PVC fillers
If additional assemblies (e.g., contactors, overload relays, motor chokes, and
terminals) are found in a motor feeder, the motor cable's shielding can be
interrupted close to these assemblies and connected to the mounting plate
(PES) in such a way that electrical contact is established across a large sur-
face area. Free or non-shielded connection cables should not be any longer
than about 300 mm (max. 500 mm).
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