Nivz

Hi all I need your help! so I recently purchased a Mecer 3kva inverter with a Hubble Am-4. Had an electrician come out yesterday for the install. He completed all the connections and upon start up of the inverter the earth leakage trips. He did a test with a multimeter? And found that the short occurs between neutral and earth on the ac input side of the inverter. He then reconnected the inverter ac input via a wall plug solution on a circuit breaker that’s will always grid tied ( this circuit breaker doesn’t work during load shedding and the inverter doesn’t power it ) and it still trips. the inverter works perfectly off battery power and works if the earth is removed on the ac input. his assertion is that the inverter is faulty and needs replacing. advice needed. Thanks