#### Inspectorcliff

##### Senior Member

- Location
- Colorado

I don't think so!

Thanks.

- Thread starter Inspectorcliff
- Start date

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- Location
- Colorado

I don't think so!

Thanks.

- Location
- Simi Valley, CA

"....Supplying power

The exception says that you can go up to 120%.

After looking into it some more you are correct:

100 amp main = 20 amp PV

200 amp main = 40 amp PV

so I'm thinking that 150 amp main = 30 amp PV

That's without doing the math of course.

- Location
- Colorado

The output of a photovoltaic power source shall be connected as specified in 690.64 (A) or 690.64(B). Since this job is being connected to the Load side and it is a dwelling, SO, we have a 200 amp panel feed with 150 amp conductors and OCD,(from the Utilities) we now also fed the panel with a 60 amp OCD from the PV system, We have 210 amps of feed to the panel, we can load it to 240 amps if it is a dwelling. AS per the excep. I think. So we are in compliance. BUT, if it is not a dwelling then we have slipped into a violation as per 690.64 (B)???? HELPcowboyjwc said:

"....Supplying powertothe busbar..."

The exception says that you can go up to 120%.

After looking into it some more you are correct:

100 amp main = 20 amp PV

200 amp main = 40 amp PV

so I'm thinking that 150 amp main = 30 amp PV

That's without doing the math of course.

- Location
- Simi Valley, CA

Yes you are correct that if it were a commercial building you would be noncompliant.

For commercial it is Main breaker + PV breaker = rating of load center. So basically for Non-Dwelling: Increase load center and use smaller main breaker.

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