Hardware Manual

Planning the electrical installation 71
Recommended power cable types
Power cable types for limited use
Not allowed power cable types
Symmetrical shielded cable with three phase conductors and a
concentric PE conductor as shield. The shield must meet the
requirements of IEC 61439-1, see page 67. Check with local /
state / country electrical codes for allowance.
Symmetrical shielded cable with three phase conductors and a
concentric PE conductor as shield. A separate PE conductor is
required if the shield does not meet the requirements of
IEC 61439-1, see page 67.
Symmetrical shielded cable with three phase conductors and
symmetrically constructed PE conductor, and a shield. The PE
conductor must meet the requirements of IEC 61439-1.
A four-conductor system (three phase conductors and a
protective conductor on a cable tray) is not allowed for motor
cabling (it is allowed for input cabling).
A four-conductor system (three phase conductors and a PE
conductor in a PVC conduit) is allowed for input and motor
cabling with phase conductor cross-section less than
10 mm
2
(8 AWG) or motors < 30 kW (40 hp). Not allowed in
USA.
Corrugated or EMT cable with three phase conductors and a
protective conductor is allowed for motor cabling with phase
conductor cross section less than 10 mm
2
(8 AWG) or motors <
30 kW (40 hp).
Symmetrical shielded cable with individual shields for each
phase conductor is not allowed on any cable size for input and
motor cabling.
PE
PE
PE
PE
PVC
EMT
PE