Wireway Fill Installing MC Cable

[aknot5]

When installing 12/3 MC Cable in wireway does NEC 376.22 apply similar as applied for single conductors (THHN). That is you consider cross section of conductors only and omit fill from the sheathing. If more than 30 current carrying you derate?

 

[chris kennedy]

When installing 12/3 MC Cable in wireway does NEC 376.22 apply similar as applied for single conductors (THHN). That is you consider cross section of conductors only and omit fill from the sheathing.

The MC is running through the wire way with the jacket on it?

If more than 30 current carrying you derate?

Yup.