Power Welding machine and Drilling machine

Case: We want to operate of Single phase welding machine and Drilling machine at our site. Where there is no Grid power is available

a. Single Phase wielding machine - 1 no. Maximum current 10 to 12 amps
b. Single Phase Hand drill machine - 800w
We will use any one unit at a time. This systems has to work 9am to 4pm of the day.

I think your hand drilling machine is using "Universal motor". Such motors work on both AC as well as DC. If that right; If your line voltage is 110 or 120V, take10 panels 12V8Watt panels, connect all panels in series and this will solve your Drilling problem. You can + & - to any P or N wires.

I do not know about your welding m/c. If it is inverter type welding, go for then instead of 8 watts go for 12 watts panels.

If your voltage is 240V then take double number of panel reducing the wattage to half.