Well the first limitation is that you've yet to show any understanding of electromagnetism fundamentals or any grasp of our concerns for you trying to do this build. So even if you were handed a schematic and assembly drawing, I'm not sure you will be capable of building an inverter safely. I find it even more doubtful you could troubleshoot a sound design that was miss-assembled.
A case in point, you originally asked for a transformer to convert 24V to 220V. This implies that the input and output voltages are AC signals. Now you're talking about somebody's 24V battery to 220VAC inverter system. I don't wish to be cruel but I'm not sure if you know the difference between DC and AC electric power. So how can I hope to discuss with you the idea of magnetic field strength, magnetic flux density, hysteresis, eddy current loops and quenching the core.
"A good scientist is a person with original ideas. A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering." Freeman Dyson