I am trying to design electrical wiring for a small 1-bedroom house which will be only powered from solar panels. The minimum appliances in a house would be:
Appliances available in 12V DC:
- LED lights
- Ceiling fans
- Washing machine
- Air conditioner
- Mobile phone charger
- Water pump for overhead tank
Appliances not available in 12V DC (so far)
- LED TV
- Laptop/sesktop computer
Some of these appliances are available for DC solar power but not all. Also solar panels and battery combinations are of different voltages as 12V, 24V, 48V etc.
How should I do the wiring design?
Only DC wiring all over in the house while using small 220V inverters at the points where 220V AC appliance is to be connected OR do all the normal AC 220V wiring in the house while connect a big central inverter 220V AC at the point where I will put the batteries and solar panel wiring cabinet?
OR maybe mix of the two wiring?
Normally the DC wires have less resistance and size is 10mm copper wire while AC wire is 3/29 or 7/29 imperial guage wires mixed-copper (called china copper) used in my region.
The house will be outside city where there is no mains electric supply or grid.