Parallel conductors DC system

[gnortham]

I need to feed a DC motor armature with about 1650 amps.I plan on using (5) 500MCM conductors per pole. Can I run (2)pos conductors and (2) neg conductors plus ground in two conduits and (1) pos conductor and (1) neg conductor plus ground in a third conduit?

 

[jbartos]

Suggestion: It can be run:
Conduit # 1: +500MCM x 2 -500MCM x 2 and Ground
Conduit # 2: +500MCM x 2 -500MCM x 2 and Ground
Conduit # 3: +500MCM x 1 -500MCM x 1 and Ground

 

[REDDOG]

Per NEC Article 250.122,
Grounding conductor must be the same size in all conduits.
250MCM for 2000 amp overcurrent devise.
Per NEC Article 310.4 Parallel conductors.
Per NEC Article 310.15 Ampacities.
Try 2-4" with 6-500MCM and 1-250MCM Grounding