Interesting, wonder why they changed it? If it’s like arc faults, probably some manufacture came up with a design to sell, and the best way to sell something nobody is looking for, is to require it to be used.In the 2017 and prior this would not be a requirement. But this was changed for 2020 in 230.46 to include all splices and taps to be listed for line side.
Not sure if Polaris has the approval.
Not sure if Polaris has the approval.