I am trying to use a digital multimeter to measure a house solar panel installation. I'm just learning, but I can't find a good answer to my problem.
I tested the voltage on a 1.5 AA battery and as I moved the knob to higher voltages (from 200 mV to 1000 V) I get very divergent readings:
- 200 mV : 1 (overloaded)
- 2000 mV : 1580
- 20 V : 2.56
- 200 V : 12.4
- 1000 V : 111
I don't know if I'm wrong, but I was thinking that as I increase the max voltage I'd get smaller values, but this jumps from 1580 to 2 then 12 and then 111, the pattern doesn't seem to grow evenly in the last 3 values either.
My original goal was to measure voltage in what was to be a 12 V installation, I got these readings:
- 20 V : Overloaded
- 200 V : 105+
- 1000 V : 935+
I take it has more than 20 V, but the other readings don't make sense so I don't know how to interpret them.
Am I missing something, is there something I don't know?