VA and amps? Divide the VA rating by the incoming voltage
An ISB 4000 in Mexico with standard Mexican voltage of 127?
4000 divided by 127 = 31.49606299212598 amp
In the US 4000 divided by 120 = 33.333333333
In Mexico 8000 divided by 127 = 62.99212598425197
In the US 8000 divided by 120 = 66.66666666666
This is all theoretical math and there will be variations depending on equipment and actual voltage and the conditions of the electrical circuits you might be connected to.
Keep in mind that in Mexico many outlets in RV parks may not even be 30amp – they could be 15 or 20amp.
But as a general rule in Mexico you would not need more than the 4 KVA (4000 VA model).
