I have. More than once. Such is life when using low sensitivity, low impedance speakers and you're trying to reproduce Motorhead at concert level. Sent a 1200 wpc amplifier into thermal shutdown a couple of times too : ) Sean
Large power amps can trip breakers, especially when they are just being turned on. The current demands may exceed the limits of the breaker during this powering-up phase, even if the amp does not over-tax the breaker while playing. I had this problem on occasion with the bass amp in my previously owned Genesis 201s. Many amps power-up in phases, which generally avoids this problem.