The electromagnetic induction effect has been investigated for an electric ignition system with a multi-conductor cable commonly used for launching a series of fireworks in a firework display. The results show that the energy consumed in a bridgewire (EB) may have a value close to the minimum energy required to ignite a fusehead, depending on the type of cable and the way it is used. In addition, it was found that chatter in a mechanical switch can cause a further increase in EB, possibly leading to unintentional ignition.
fusehead, ignition, electromagnetic induction, chatter