The diesel generators can back up power to safety systems, so closer to MWs than GWs. Some run with left-handed and right-handed engines coupled face-to-face fo

The diesel generators can back up power to safety systems, so closer to MWs than GWs. Some run with left-handed and right-handed engines coupled face-to-face for redundancy; thus you might AFAIK shut down fuel injection to one to prove the other is supplying torque.