Working on partially live (hot) devices-

Work on an equipment which is partially hot because of high voltage should be done by a person whose designation not below then superintendent and having minimum 5 years experience in subordinate electric and mechanical service (S.E. and M.E.S.).
No work should be done on partially hot device from high voltage in absence of appointed person for observing progress of the work. He should always be present at workplace till the work has been completed to ensure that the person on work should stay at only cold portion of the device. He should not leave the workplace if any person is still present there.

But in following circumstances above mentioned rules are not applicable on partially live (hot) structures-

• Up to 11000 volt (11 KV) voltage, after opening hand operated three combinations switches (T.P.M.O.), working on cold part of the device
• Changing of fuses
  In these cases, person executing this task will be personally responsible for cooling down the part of the device on which he is working by operating the switch.