SER & 90 Degree Column

[Alwayslearningelec]

Need to feed a 225A MCB panel and need to have 225A rated wire. I want to use aluminum and #250 AL SER has 225 amapacity but at 90 degree column. It will be run outdoors and is for temp. Can I use 90 degree column?

 

[Tulsa Electrician]

What the termination temps?

 

[infinity]

Need to feed a 225A MCB panel and need to have 225A rated wire. I want to use aluminum and #250 AL SER has 225 amapacity but at 90 degree column. It will be run outdoors and is for temp. Can I use 90 degree column?

No.

 

[Alwayslearningelec]

No.

75?

 

[infinity]

75?

Yup.