￭ Alternative power cable types
Recommended power cable types
This section presents the recommended cable types. Check with local / state / country
electrical codes for allowance.
Use as motor cablingUse as input power cablingCable type
YesYes
Symmetrical shielded (or armored)
cable with three phase conductors
and concentric PE conductor as
shield (or armor)
YesYes
Symmetrical shielded (or armored)
cable with three phase conductors
and symmetrically constructed PE
conductor and a shield (or armor)
YesYes
Symmetrical shielded (or armored)
cable with three phase conductors
and a shield (or armor), and separ-
ate PE conductor/cable
1)
1)
A separate PE conductor is required if the conductivity of the shield (or armor) is not sufficient for the PE use.
Power cable types for limited use
Use as motor cablingUse as input power cablingCable type
Yes with phase conductor smaller
than 10 mm
2
(8 AWG), or motors up
to 30 kW (40 hp).
Yes with phase conductor smaller
than 10 mm
2
(8 AWG).
Note: Shielded or armored cable, or
cabling in metal conduit is always
recommended to minimize radio fre-
quency interference.
Four-conductor cabling in PVC con-
duit or jacket (three phase conduct-
ors and PE)
Yes with phase conductor smaller
than 10 mm
2
(8 AWG) or motors up
to 30 kW (40 hp)
Yes
Four-conductor cabling in metal
conduit (three phase conductors and
PE), eg, EMT, or four-conductor ar-
mored cable
Electrical planning guidelines 25
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