Feeding a Subpanel with 6-3 SER w/Ground

[Will Wire]

Referencing NEC 110.14(C)(1)(3). Is it code compliant to use 6-3 SER w/Ground Aluminum for a 50 amp sub-panel, with the breaker rated at 75 C and the sub-panel rated at 75 C due to the wire being rated at 50 amps in the 75 C column of Table 310.16? Thank you

 

[Eddie702]

I would say yes.

 

[suemarkp]

As long as you don't have other derating issues, like running it through a hot attic or bundling with other conductors. The 90C ampacity is only 55A, so you don't have much derating headroom.

 

[LarryFine]

That's what I used when I wired my home theater sub-panel.

 

[letgomywago]

I've done this many times to make room for afci by moving all the lighting into a lighting sub panel fed off a 50a