Yes there is a separate grounding device available.
Goes between PSM156 and copper grounding rod.
I plan on buying one this Spring. Not pricey. Getting a copper rod into the ground in Minnesota right now would be a challenge.😊
Puritan PSM 156
Hello I just purchased a used Puritan PSM 156, and it's an amazing product I highly recommend! My first question for you already experienced owners, does it normally come with a factory manual ??? ... also the Puritan, has a special ground connection? is there some kind of extra device that attaches there? please explain if you can. and last would you plug you power amp into the Puritan?? hope someone can help me out, and thanks for your precious time Aoltes