neutral and ground in the ground? [RE-wrenches]

[Allan Sindelar]

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Geoff,
Is Vanner available to provide assistance here?

I don't know the answer re the neutral, but just because the output is
split-phase does not necessarily mean a neutral conductor is required. The
neutral is only required to provide 120AC. If the only loads are 240AC, such
as a dedicated inverter for a well pump application, the neutral isn't used.
I would assume that the same is true with grid intertie feeders.

Allan

> The situation:  A Vanner RE-4500 utility interactive inverter (120/240 VAC
> output) is currently operating stand alone (with minimal and often no
loads,
> ground rod and grounded neutral at AC panel).  The scope of the project is
> to trench 1,100 feet and tie the system into the grid at a building's load
> panel in order to "sell" excess power.
>
> The question:  What wires do I need?  Obviously L1 and L2, but what about
> neutral and what about ground?
>

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