Originally Posted by
GraphiteGhost

Your question " -is there a DC tool that you can hold against a wire to see if current is flowing? I know there is for AC ". There is no 'Clamp-On' Ammeter for DC, it is only available to sense an alternating sine wave. Unless I am waaaaaay behind on test equipment (don't think so), there is no 'Clamp-On' ammeter for DC voltages.
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You are WAY behind. My Fluke clamp-on measures AC and DC currents up to 60 amp with a resolution of .001 amp and an accuracy of around 5%.