How dangerous was tying down an electrical breaker, as occurred on USS South Dakota, and how can the damage be prevented?
Short answerIt can keep a fault energized until components fail or burn. Modern disconnecting mechanisms allow a protective trip even when the handle is physically held on.
NotesA tied breaker can leave a shorted or overloaded circuit energized, leading to melted conductors, fire, failed connections, or damaged generation. Modern disconnecting handles are designed so an overcurrent mechanism can trip the circuit even if the handle is secured in the on position. A skilled electrician can still improvise a bypass with insulated taps, which means engineering controls cannot remove every emergency workaround. The wartime context matters because damage control has to balance the immediate need for power against the possibility of cascading electrical damage.