I received my resistors and headphone 3 way splitters. A strange result though. I have 2 circuits (refrigerator and freezer) that I’d like to combine into one input. If I separate them as inputs, the freezer is 30 watts and the refrigerator is 67. If I plug them into the 3 way splitter with a 20 ohm resistor, it measures 48 watts. If I just plug them into the splitter and unplug the resistor, it measures 97 watts (which seems correct). What am I doing wrong with the resistor? Thanks!
Edit: I forgot to change the burden resistor to 10 ohms as you explicitly instructed above. Ignore this post. As an aside, I assume it doesn’t matter if both inputs to be combined are reversed or not as long as they are the same and are therefore additive and not subtractive.