FMC - Max Gnd path ampacities for 3/0 (150A) FMC used as EM shield or fault return

[Scottengine]

I have a single insulated 3/0 locomotive cable: running to a large metallic block (chamber) I need to run it in a 1-1.25" Conduit to shield it from EMC and as fault current path (if single insulation fails). The max ampacity of conductor will be about 150A.

What will the FMC be able to handle max fault current? what NEC table? or does this scenario not meet the requirements at all?

I will use this: https://www.aerosusa.com/catalog/sheathed-metallic-conduits
or Liquid tite gray stuff.

ANY HELP APPRECIATED!

Scott
3/0 cable:

A tough, polyamide, Nylon outer covering per UL-1063 and UL-83.
Standards:
UL Listed
Accepted by MSHA for listing as flameresistant
CSA R90
RoHS Compliant
Construction:
Conductor:
Size: 3/0
Conductor Strand: 456/24
Insulation Thickness: 2.03 mm / 0.080 inches
Jacket Thickness: 1.14 mm / 0.045 inches
Outside Diameter: 20.57 mm / 0.81 inches
Weight: 0.740 lbs per ft
Allowable Ampacity: 350 Amps
3/0 stranded tinned annealed bare copper per AAR 589
Insulation:
Premium grade 90ºC EPDM

 

[ActionDave]

I am closing this thread, in accordance with the Forum rules. This Forum is intended to assist professional electricians, inspectors, engineers, and other members of the electrical industry in the performance of their job-related tasks. However, if you are not an electrician or an electrical contractor, then we are not permitted to help you perform your own electrical installation work.