This problem can occur at initial start up, restart after rework, and restart after incidents such as short circuits or water damage. Also, prior to restart, all loads should be shed, i.e., the load switches turned off so that the restart does not close into a large number of motor loads. This sort of activity takes knowledge, education, and training and should only be attempted by qualified persons. No electrical accident can happen when the power is not present. While that statement seems to make obvious sense, this article has attempted to make another statement clearer.
Electrical accidents can and do happen when working on equipment that is energized.
A simple accident s can result in severe explosion causing major equipment damage, severe personnel injury, and death. Employers need to require the wearing of proper protective clothing and on-going safety training programs so that their employees are adequately protected and informed of the hazards involved.