Targa 2.8kz staying in protection

AC, DC, which terminals of the rectifiers?

With a scope or multimeter?

You need to understand that you are seeing this and your brain is picking up on hundreds of tiny details. All we get is what you write in your post. That's a HUGE difference in the information you have and that we get. This isn't just you. Most everyone who posts tries to do so in shorthand.