Does this stay or go?

[jar546]

This is a 480/277 generator that has an ATS in an office building. As you can see, the neutral is bonded to the frame of the generator. The ATS confirms that this is not a separately derived system because the neutral is not switched. Should this factory installed bond between the neutral and frame be removed?

 

[ICE]

Separately Derived System. An electrical source other than a service, having no direct connection(s) to circuit conductors of any other electrical source other than those established by grounding and bonding connections.

445.11 Marking.
Marking shall be provided by the manufacturer to indicate whether or not the generator neutral is bonded to the generator frame. Where the bonding of a generator is modified in the field, additional marking shall be required to indicate whether the generator neutral is bonded to the generator frame.

 

[jar546]

Separately Derived System. An electrical source other than a service, having no direct connection(s) to circuit conductors of any other electrical source other than those established by grounding and bonding connections.

445.11 Marking.
Marking shall be provided by the manufacturer to indicate whether or not the generator neutral is bonded to the generator frame. Where the bonding of a generator is modified in the field, additional marking shall be required to indicate whether the generator neutral is bonded to the generator frame.

Yes and yes on the copy and paste. I would still like, however, an opinion on this particular situation.

 

[ICE]

I’m hoping to draw some people out of the shadows with the code sections.