American Power Conversion PD150G6F - Manual (Page 41)

150kW InfraStruXure PDU—Operation and Configuration 33
How to Ensure Total Power Off
1. Open (turn OFF) the main circuit breaker
on the power source feeding the PDU.
2. Open (turn OFF) the Main Input on the
InfraStruXure PDU.
3. Open (turn OFF) the Main Output circuit
breaker and subfeed circuit breakers (if
applicable) on the front of the
InfraStruXure PDU.