I currently have a subpanel coming from a main distro panel with my local power source being a Y connected generator. How many places/panels should the grounded and grounding conductors be bonded? I believe it is the first means of disconnect which is my MDP. All subpanels from that point on should not be bonded. Do these subpanels need individual ground rods at each one?

Next is the conductor sizing between a 250A 3pole and a 150 amp 3 pole. At a minimum, the conductor should be rated for a 150A per phase. Correct?

On another note, this is not in the US, and just trying to get the job done with the available materials, but trying to follow code as close as I can.

Thank you all..

If this is not in the US the best place to start is telling us where you ARE located.

I personally don't give advice for outside the US (except maybe Canada) because I don't know the practices and codes outside the US

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Originally Posted by eng_christopher

I currently have a subpanel coming from a main distro panel with my local power source being a Y connected generator. How many places/panels should the grounded and grounding conductors be bonded? I believe it is the first means of disconnect which is my MDP. All subpanels from that point on should not be bonded. Do these subpanels need individual ground rods at each one?

Next is the conductor sizing between a 250A 3pole and a 150 amp 3 pole. At a minimum, the conductor should be rated for a 150A per phase. Correct?

On another note, this is not in the US, and just trying to get the job done with the available materials, but trying to follow code as close as I can.

Thank you all..

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There are no codes and or practices here. I wish I could say, but I cannot. Just trying to ensure that my comrades and I are doing things safely. Thanks for the help.