New home construction –
The service entrance panel is a 200 Amp rated Cutler Hammer panel with a 200 Amp main breaker. One of the breakers it contains is a 125 Amp that feeds the garage sub-distribution panel.
The garage sub-distribution panel is also a 200 Amp rated panel with a 200 Amp main breaker. This panel has 22 - 20 Amp breakers for the various usual circuits.
Is my assumption correct that if any of the 20’s trip in the sub distribution panel, the first power to shut-down would be the 125 Amp in the service panel, not the 200 of the sub distribution ?