on multi-lead equipment, all equipment leads should be connected to lead#1 of the tester.usr of jumpers facilitate this procedure. Winding leads not connected to the tester 's lead#1 may also be at the same or higher voltage potential as the test voltage and potentially hazardous. the other two red leads#2 and #3,should not be connected while the DC HIpot test is taking place,even though they are open during this test,because potential damage to the tesster can occur.