[RE-wrenches] Line Side Tap

[david quattro]

Drake I think you’re right and they’re wrong, as long as the 200A bus is
protected by a 200A breaker, and as long as the Utility meter and utility
conductors remain 400
David




On Thu, Oct 12, 2023 at 5:06 PM Drake Chamberlin via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> We have a design where the conductors will come out of a 400 A meter base
> to a junction box. Splices in the box will allow for the PV to feed the
> meter.
>
> A maximum of 312 Amps can come from the inverters to feed the grid.
>
> The loads on the existing main service are significantly less than 200A.
> The service is rated at 200 A, 3 phase delta.
>
>
>
>
> The conductors from the meter would be rated at 400 A to the splice, as
> would the conductors to the photovoltaic system. The conductors to the
> existing service would be downsized to 200 A.
>
> We were told that the bus bar rating of the service must also be 400 A,
> even though the output of the PV does not feed through that box. Is there a
> rule that says this? What would be the logic?
>
> Thank you,
>
> Drake
>
>
> *Drake Chamberlin*
>
> *Athens Electric LLC*
>
> *Ohio Electrical Contractor’s License 44810*
>
> *NABCEP Certified PV Installation Professional*
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