This panel feeds most of the general loads at the Co-gen for the company we work for... I've not seen 240Y/120V anything before... then it says 1Ø and there are 3Ø breakers inside (I haven't had a chance to remove the cover, I'm almost afraid to!) nor do I know the meaning of "bypass", but I'm hoping it isn't a backfeed from the UPS system.

The last pic is in the room with the UPS batteries and inverter... No one I've talked to can offer a clue as to why the fan was installed this way!


[Linked Image from electricalphotos.com]


[Linked Image from electricalphotos.com]

[Linked Image from electricalphotos.com]


[Linked Image from electricalphotos.com]



[Linked Image from electricalphotos.com]