2 - 20 circuit loadcenters on 1 100amp breaker

[ndc81167]

i have a 100amp single phase main breakers feeding 1- 20 circuit panel ,, and from that panel i have a 90mp breaker feeding another 100amp 20 circuit panel .
is this code complaint ? i cant find anything prohibits this .

 

[infinity]

Yes code complaint.

 

[jumper]

I agree with Infinity.

100A main, 90A sub......SER to sub?

 

[kwired]

Second panel is now effectively a 90 amp panel, even if it had a 200 amp main breaker in it.