110V Precision Variable DC Power Supply Question

I am trying to find a short to ground and I saw a video on YouTube https://www.youtube.com/watch?v=t5fICjcaJ3E where the guy placed a current through the contacts of an inductor that was removed to check the board for shorted components causing the short, he put a 3.5V and the full 10A that his expensive HP 6542A could handle. He found the heated component by finger touch and then used alcohol to pin point the culprit. My question is should I buy a 30V 10A 110V Precision Variable DC Power Supply or is a 5A max enough? Some people use mA like quarter amp to do the same thing. Thanks for the input.

by gica69
February 24, 2017

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