Ground-neutral bonding in 200 amp disconnect switch

Hello everyone. I have a technical question about doing the ground neutral bonding on a disconnect switch. This switch will be part of an inverter tied to the grid but to keep the question simple, I ask that you look at this as just adding a switch between the meter/grounding rods and the existing panel (formerly the main panel but will now be a subpanel).

The switch is a Siemens GNF324R. What seems to be causing the confusion is that it is a 3 pole switch and it did not come with a grounding kit or a netral kit. The sticker on the switch says that it is service rated when used with either HG61234 grounding kit or HN64 neutral kit. I was able to order the grounding kit for about $10, but the neutral kit is at least $100 and I was hoping to avoid buying it. It seems that a 2 pole disconnect with both ground and neutral termainsl would have been more straight forward, but I'm hoping to make the 3 pole swithc work since I already have it.

This is a 200 amp service. In the diagram, the brown wire is a bare copper ground. The white wiere is neutral. The black and red wires are hots.

Please see the attached diagram. Does it make a difference if the neutral wire goes to the grounding block on the line or load side? I realize that local jurisdiction may differ on whether it would be acceptable but would it be acceptable per NEC?

If this is your first means of disconnect, you would need to bond the ground and neutral, and the bond in main panel would have to be removed.

Thanks for the reply. Yes, this switch would the first point of disconnect. So, running a wire from the neutral, load side terminal to the ground block would be a valid way to create the bond?

jmsandrsn said:

Thanks for the reply. Yes, this switch would the first point of disconnect. So, running a wire from the neutral, load side terminal to the ground block would be a valid way to create the bond?

Click to expand...

That's for someone more knowledgeable than I. I want to say yes, but I hired this part out for my install

I don't like that

I rather not comment further

1. You will have to run a ground wire from this disconnect to the main panel.
2. You will have to bound the neutral and ground in this disconnect.
3. In the main panel all your grounds and neutrals need to be separate.

If it were me, I would get a neutral/ground buss large enough to fit the all neutrals and grounds. Then bolt that to the disconnect and not switch the neutral.

Thank you. That's very helpful.