yeah, I've got a 150 A ANL fuse for my 1500 watt inverter and that is undersized for the max surge capacity. But I'm not planning on ever pushing the inverter that heard. In fact I tried my microwave which based on specs is right at the limit of the inverter's continuous rating and the inverter couldn't run it for more than a few seconds. Could be a number of factors, but bottom line is that my inverter is oversized for my usual needs. With solar, I'm not concerned about the parasitic draw from the inverter when it is shut off. A circuit breaker would certainly be handier and easier to cut the inverter out of the picture when desired though! Good thinking.