When the 3-wire control of a single 3-phase AC motor is modified for a jog function with the addition of a stacked NO/NC momentary PB switch and the Jog PB switch is pushed, the NC contacts are forced open before the NO contacts are allowed to close.
In other words, either the seal-in circuit, or both the seal-in and the start circuit are electrically disabled before the start circuit is paralleled by the NO Jog PB switch contacts in a __________ switching configuration.
A) break-before-make
B) Either break-before-make or make before break
C) make before break
D) none of the answers
Show Answer
Answer:A
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