Sorry. I didn't quite get it. And that's just because I don't know much about this stuff.
So per your experience, the Bitmain power supply protect you from surge? But I still need something for my breakers? I am confused
Per my experience, stay away from the Bitmain power supplies. They are poorly manufactured and fail all the time.
When you use a quality server PSU, they have many protections built in to protect the $30k server they were originally attached to. If there is a problem with the power they will shut themselves down to prevent damage and most certainly will not pass those issues along to the mining hardware. If something does burn up in the power supply the breaker should trip before any damage is done. Ive run tens of thousands of miners and never once used any kind of in line surge protector.
Examples of the PSUs I am talking about:
http://www.parallelminer.com/product-category/power-supply-kit/I have already ordered my PSU's so I am not sure how to go about it now.
I also heard that the break out boards which were in your link need to be soldered to the PSU otherwise they blow or burn due to resistance if there is loose connection.
You have worked on tens and thousands of miners? Man you must be a pro then. Any other best practices? Do you run your machines on 208 or 240?