Not Allowed Power Cable Types; Additional Guidelines, North America - ABB ACQ580-04 Hardware Manual

74 Guidelines for planning the electrical installation

Not allowed power cable types

Cable type
Symmetrical shielded cable with in-
dividual shields for each phase
conductor

Additional guidelines, North America

￭
ABB recommends the use of conduit for power wiring to the drive and between the drive
and the motor(s). Due to the variety of application needs, metallic and non-metallic conduit
can be used. ABB recommends the use of metallic conduit.
The following table shows examples of various materials and methods for wiring the drive
in the intended application. See NEC 70 along with state and local codes for the appropriate
materials for your application.
In all applications, ABB prefers the use of symmetrical shielded VFD cable between drive
and motor(s).
Wiring method
1) 2)
Conduit - Metallic
Electrical metallic tubing: Type EMT
Rigid metal conduit: Type RMC
Liquid-tight flexible metal electrical conduit: Type LFMC
2)
Conduit - Non-metallic
Liquid-tight flexible non-metallic conduit: Type LFNC
2)
Wireways
Metallic
2)
Free air
Enclosures, air handlers, etc.
1) Metallic conduit may be used as an additional ground path, provided this path is a solid path capable of handling ground
currents.
2) See NFPA NEC 70, UL, and local codes for your application.
3) Non-metallic conduit use underground is allowed; however, these installations inherently have an increased chance for
nuisance problems due to the potential for water/moisture in the conduit. Water/moisture in the conduit increases the
likelihood of VFD faults or warnings. Proper installation is required to make sure there is no intrusion of water/moisture.
Use as input power cabling
No
PE
3)
Use as motor cabling
No
Notes
Prefer symmetrical shielded VFD cable.
Use separate conduit run for each motor.
Do not run input power wiring and motor wiring in the
same conduit.
Prefer symmetrical shielded VFD cable.
Use separate conduit run for each motor.
Do not run input power wiring and motor wiring in the
same conduit.
Prefer symmetrical shielded VFD cable.
Separate motor wiring from input power wiring and
other low voltage wiring.
Do not run outputs of multiple drives parallel. Bundle
each cable (wiring) together and use separators where
possible.
Prefer symmetrical shielded VFD cable.
Allowed internally in enclosures when in accordance
with UL.