Final answer:
To maintain safety while working on a current transformer, the secondary winding must be grounded. Grounding ensures that any accidental high voltages are safely diverted to the earth, preventing electric shock. Additionally, other safety devices like isolation transformers, GFIs, and circuit breakers also contribute to electrical safety.
Step-by-step explanation:
To prevent injury while working on a current transformer, the secondary winding must be grounded. This is to ensure that if there is a break in the insulation or an accidental connection between the high voltage side and the low voltage side, the grounding will provide a safe path to the earth. This protection method prevents dangerous voltages from appearing on the secondary side and causing an electric shock to someone working on or near the transformer.
In the context of transformers and electrical safety, a few important principles and devices are involved:
- An isolation transformer is used to prevent shock by separating the device being powered from the power source.
- A ground fault interrupter (GFI) helps in preventing shock by detecting the loss of current to unintentional paths and disconnecting the power.
- Circuit breakers and fuses are safety devices designed to interrupt excessive currents, thus protecting against thermal and electrical hazards.