The intent of the line side tap, was to allow larger pv systems to
interconnect to the SE conductors and not have to consider the service
panel. So, I agree with others that the service panel has no
consideration for what you are doing. The panel is protected by the MSP
Breaker. Chris
On 10/12/2023 8:06 PM, Drake Chamberlin via RE-wrenches 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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