#2 ser may be compliant at 90 amps as long as the ser is not run thru insulation, ie if you can maintain the 75C rating. Otherwise the ser would be rated for 75 amps @ 60C
Sometimes it is better to avoid SER and just use PVC the entire distant and then use #2 xhhw or thhn
With the conduit you could use #1 al and get the sub up to 100 amps which leaves a bit more room for expansion
Sometimes it is better to avoid SER and just use PVC the entire distant and then use #2 xhhw or thhn
With the conduit you could use #1 al and get the sub up to 100 amps which leaves a bit more room for expansion