For low power, sure, but refrigerators and lighting are going to require thicker cabling. But you could reuse 14/2 romex for 24 volts and get like 10-20 amps, depending on the distance.
Unfortunately, you can’t always trust line voltage wiring to make sense. Sometimes they tie neutrals together across circuits, sometimes they reverse the colors of the wires, and sometimes the electrician just didn’t give a fuck about excess wire and there’s like 50 extra feet of looping cable for no reason.
For low power, sure, but refrigerators and lighting are going to require thicker cabling. But you could reuse 14/2 romex for 24 volts and get like 10-20 amps, depending on the distance.
Unfortunately, you can’t always trust line voltage wiring to make sense. Sometimes they tie neutrals together across circuits, sometimes they reverse the colors of the wires, and sometimes the electrician just didn’t give a fuck about excess wire and there’s like 50 extra feet of looping cable for no reason.