Mike Holt Enterprises Understanding the NEC

Keeping up with the requirements of the Code should be the goal of everyone involved in electrical safety. The following is what I feel is an important rule in the 2020 NEC®, complete with graphics and a video. I encourage you to use it as a training resource for your organization, and share it with your colleagues.

Solar Photovoltaic (PV) Systems, Rapid Shutdown [690.12]

The content below is extracted from Mike Holt's NEC Requirements for Solar Photovoltaic and Energy Storage Systems textbook, based on the 2020 NEC. Be sure to download the PDF to follow as you watch the video.

Click here or on the thumbnail to the left to view or download the PDF of this rule. (2 pages, 343 KB)

Click on the image above to watch the video

Electricity poses a significant danger to firefighters when working with energized PV systems. To reduce this risk, the NEC has implemented requirements in 690.12 that include a rapid shutdown function for PV system circuits.

To learn more about these requirements, read the attached text and watch the accompanying video, where Mike and the Solar PV team discuss the topic in detail.

  

We'd love to hear from you about this series, and the ways you're using it. Send us your comments and feedback by clicking on "Post a Comment" below. Look out for the next part in this series a month from now, and please share with your colleagues.

This content is extracted from Mike Holt's NEC Requirements for Solar Photovoltaic and Energy Storage Systems textbook, based on the 2020 NEC Program.


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Comments
  • Solar developers and EV developers are now claiming that instead of paying for a service panel upgrade, a customer can simply have a meter collar adapter installed between the meter and the socket. The meter collar adapter includes a breaker and a plug to connect PV or EV directly without going through the main service panel and protective device. Does the NEC have provisions for the use of meter collar adapters?

    Anthony EE Maryland  August 29 2023, 8:24 am EDT
  • Reply from: Mike Holt   August 29 2023, 4:28 pm EDT
    Yes, see https://connectder.com/wp-content/uploads/2023/08/ConnectDER_Solar_MSA_v5.2_Installation-Manual-v1.0f.pdf


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