yousuffaslam Member Member since Aug 11, 2008 Last active Oct 30, 2008 Total activities 0 Activity feed Recent contributions #Threads 17 years ago control panel supply hi guys;-) In hi-voltage control panels,we give the supply(eg 11kv) through busbars to circuit breaker. can't we give supply through cables? if... #Threads 17 years ago What is threshold current? anyone can explain about threshold current?