New B&K Amp Blows Circuit

You might have other loads on your line and this is a possible reason for the breaker tripping. A dedicated line would definately be in order. Did you install a dedicated line? Did anyone mention it might be better to put in a 30a. line? What does B&K recommend? If they say a 20a would be enough and the problem persists then it must be something w/the amp or your wiring. I personally would install a 30a dedicated line, but I do not know the specifics on your amp. Just my opinion, Bill.

Sounds like a job for a variac, a line splitter, and an "amp clamp".

What load is the amp under. B and K Amps are high current design. And if the load is too low it will tend to keep pumping power until it runs out. When you say you have a dedicated line did you consider the total main capability and the remaining house loads aside from the amp. Have you checked voltage and amprobe the load to this circuit before it trips???