Hey, I'm new and trying to remember things from my middle school electronics class. I have an electronic load tester with a Max of 30v and 4amps( I think), but I also think it's 30 watts rated and from what I gather it protects itself by adjusting what it can measure but haven't had a chance to test that and don't want to blow it up. My tester has a meter function I would like to utilize outside of the limits of what it is capable of. I was wanting to know if it is possible to use a shunt probably a 50amp @75mV to moniter thepower going the load from supply. Voltage can be obtained from a simple multimeter reading and during the metering process see how the voltage changes along with the amps. My thought on this is have a known voltage with a known static load like a resistor to gather my base of how what the meter shows to what is actually being used. Is this a possibility or do I need to think of another process? This project is primarily for current usage monitoring. I know there are other options to help me but this is a shoe string budget and the operator is not a total moron( most days). Any input would be appreciated on what avenues to explore using. Thanks