Symptom
Seeing the following logs:
PLATFORM_STACKPOWER-4-UNBALANCED_PS: Switch 1's power stack has unbalanced power supplies
------------------ show stack-power budgeting ------------------
Power Stack Stack Stack Total Rsvd Alloc Unused Num Num
Name Mode Topolgy Pwr(W) Pwr(W) Pwr(W) Pwr(W) SW PS
-------------------- ------ ------- ------ ------ ------ ------ --- ---
Powerstack-11 SP-PS Ring 2860 35 2825 0 2 4
Power Stack PS-A PS-B Power Alloc Avail Consumd Pwr
SW Name (W) (W) Budgt(W) Power(W) Pwr(W) Sys/PoE(W)
-- -------------------- ----- ----- -------- -------- ------ -----------
1 Powerstack-11 715 715 1240 1240 0 70 /10
2 Powerstack-11 715 715 1585 1585 0 79 /111
-- -------------------- ----- ----- -------- -------- ------ -----------
Totals: 2825 0 149 /121
Conditions
Seen on 3850/3650s
Error can be seen even on single switches without any power stack cables
