Adding a new system in cojunction with an existing array (RAPID SHUTDOWN/ Labels?)

[Andrew Catamount]

Greetings!

Our company is installing a 3.57kw system using Solar Edge inverter/optimizers which complies with the Rapid Shutdown requirement. On the roof is an existing system with an SMA inverter.

Although our company commits to installing code-compliant systems, the existing systems falls within the old code... my concern is that due to customer restrictions, we will be accumulating the systems so that we can use (1) AC DISCONNECT. The AC Disco will act as the RAPID SHUTDOWN for the Solar Edge system but not for the SMA system.
Given that we will not be adding a birdhouse/relay with the SMA - what labeling is required in this situation?

Thanks for your help. This forum is a great educational resource!

Best,
Andrew

 

[Carultch]

Greetings!

Our company is installing a 3.57kw system using Solar Edge inverter/optimizers which complies with the Rapid Shutdown requirement. On the roof is an existing system with an SMA inverter.

Although our company commits to installing code-compliant systems, the existing systems falls within the old code... my concern is that due to customer restrictions, we will be accumulating the systems so that we can use (1) AC DISCONNECT. The AC Disco will act as the RAPID SHUTDOWN for the Solar Edge system but not for the SMA system.
Given that we will not be adding a birdhouse/relay with the SMA - what labeling is required in this situation?

Thanks for your help. This forum is a great educational resource!

Best,
Andrew

I don't think there is a real answer to your question.

Maybe the best labeling solution is to do NEC2014 compliant labels on this disconnect, and then add a map showing what part of the array is and is not compliant with 690.12, with a note stating when it was originally built. Also add a label to each inverter, specifying whether or not it complies with 690.12.