In general, inverters don't like inductive loads very well (transformers and motors) as they don't put out a true sine wave. It's more of an approximation of a sine wave with jagged edges. Because of this, the transformer in the microwave may be causing an inductive "kick" that the inverter sees as an overload.
There are microwave/inverter combos sold that work just fine together. But your inverter might not have been made for this type of load. It's possible you could put a series capacitor in the power line between the inverter and the oven to zero out the inductive reactance and get a power factor near zero, but the value could not be determined unless you knew the current draw of the oven. Or, you could just experiment with different values.
If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_29ad5d1dd86564b0
Instantaneous surge current can trip the breaker. You need to look at the data plate on the oven to see what the actual draw off the mains is. 700 watts of microwave power is NOT the amount of power drawn when it starts. You have the fan motor and the tray rotator motor to deal with when calculating the correct size of inverter to use with it.
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In general, inverters don't like inductive loads very well (transformers and motors) as they don't put out a true sine wave. It's more of an approximation of a sine wave with jagged edges. Because of this, the transformer in the microwave may be causing an inductive "kick" that the inverter sees as an overload.
There are microwave/inverter combos sold that work just fine together. But your inverter might not have been made for this type of load. It's possible you could put a series capacitor in the power line between the inverter and the oven to zero out the inductive reactance and get a power factor near zero, but the value could not be determined unless you knew the current draw of the oven. Or, you could just experiment with different values.
If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_29ad5d1dd86564b0
Instantaneous surge current can trip the breaker. You need to look at the data plate on the oven to see what the actual draw off the mains is. 700 watts of microwave power is NOT the amount of power drawn when it starts. You have the fan motor and the tray rotator motor to deal with when calculating the correct size of inverter to use with it.