[Mongezi]

Someboby told me that if main power is off you can just plug in on any socket when using a generator and all house sockets will be alive or usable and so I just wondered that if that was possible when using an inverter.Thank you.

[stanfortyman]

someboby told me that if main power is off you can just plug in on any socket when using a generator and all house sockets will be alive or usable

This is NOT true, and is EXTREMELY DANGEROUS to you and any utility workers working on lines.

and so I just wondered that if that was possible when using an inverter.Thank you.

You would need a transfer switch of some sort that will prevent backfeeding the utility lines.
Also, you will need a HUGE inverter and a huge 12v source to feed it. This would not be something you simply plug into your car.
What you will pay for something like that would far surpass a decent generator.