Contact Switch Sparking
Wanting to know if the contacts in switch s1 spark, I did a simple
  test and found that there are no sparks even with high amperage. I am
  unable to explain why this is so?


Every switching contact is bypassed by a short circuit hence the contacts can neither take much current nor spark.

I recommend you use a sim tool and see this for yourself - model the contacts as 1 milli-ohm resistances and get a feel for what will happen: -