hi pedro 1, i will send you private e mail later.your not alone.................power off is one of 2 reasons
1 builder has not paid the bill
2 final connections are imminent
as you are aware your power is construction rated ie low voltage low ampage,casings are in for the transformers however the builder has not paid the electric company for the transformers so is now in stalemate
if the problems are not sorted your option is to use a bank of batterys[dc supply] in conjuntion with an inverter [ac] backed by a means of charging like a generator...........you could even charge it on the car! obviously this method is sh1t so a correct supply is needed if you need more advice do not hesitate to contact me rich