Rapid Shutdown Solar Panels Requirements

Rapid shutdown is a simple to intall low cost rapid shut down systems designed to work with 2014 as well as 2017 nec from sol ark.

Rapid shutdown solar panels requirements.

However this isn t what happens and for good reason. In all the discussions i see about the issue of rapid shutdown the focus of attention is on the array and mleps. Nec 2017 also requires that products designed for rapid shutdown be listed according to a relevant industry test standard such as ul 1741. This requirement is called a rapid shutdown.

System conductors may remain energized even after the electrical service disconnect has been opened. It is against metropolitan and municipal fire code for solar systems connected to the grid to stay turned on when the grid is down which demands the need for a rapid shut down mechanism in solar panels. Nec 2014 pv rapid shutdown requirements were added to nec 2014 690 12 to improve electrical and fire safety hazards for first responders. After nec 2014 took effect equipment suppliers responded one by one with proprietary solutions to help their customers meet array level rapid shutdown requirements.