Sketch the necessary wiring to make this float-type level switch control a pump and a lamp in the following manner:
Hint: remember that the “normal” status of a switch is defined as the status of minimum stimulus: when the switch is exposed to the lowest possible degree of process stimulation (in this particular case, to the lowest possible level).
This is just one possible solution:
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Credits : by Tony R. Kuphaldt – under CC BY 1.0
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