A breaker blows when the current capacity is exceeded. Most likely there was an overload at the inverter when a couple of outlets connected were using power from the inverter. A heater and something else connected to inverter fed circuits could easily trigger the inverter breaker without triggering the individual breakers on the 4 or 5 circuits/breakers that the inverter feeds. Nothing to correct or worry about but worth thinking back to what might have been in use when it tripped.
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Bob
09 Journey 39Z
Southern Ontario
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